Memorandum of Understanding for Drinking Water

Memorandum of Understanding
between the
Department of Health
and
Water Corporation
for
Drinking Water
Mou2007v04.doc

Memorandum of Understanding
for
Drinking Water
Modification / Approval History
Date Description of Change Page Changed by Approved by
MoU2007v04 Printed on 30/12/08 Page i

Memorandum of Understanding
for
Drinking Water
MEMORANDUM OF UNDERSTANDING
THIS MEMORANDUM is entered into on the day of 2007.
BETWEEN THE WATER CORPORATION ("the Corporation")
AND THE DEPARTMENT OF HEALTH ("the Department")
OF THE ONE PART
OF THE OTHER PART
CONTEXT
A. The Corporation is a corporatised body under the Water Corporation Act 1995.
The Corporation has the responsibility for providing a supply of drinking water in
line with sound commercial practices and in accordance with its operating
licence.
B. The Corporation may also provide specialist advice to the Department on
drinking water matters.
C. The Department is the regulatory agency for drinking water quality in Western
Australia.
C. The Department has a role in providing advice to the Government on standards
in relation to drinking water quality and associated risks to public health.
D. The Department has certain responsibilities in relation to the protection of public
health under the Health Act 1911 and other relevant legislation.
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Memorandum of Understanding
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Contents
1.0 FOREWORD 1
1.1 Design of the MoU 2
2.0 INTERPRETATION 3
3.0 COMMITMENT TO DRINKING WATER QUALITY 4
3.1 Resource the MoU 4
3.2 Identify Responsible Officers 4
3.3 Recognise and Support the Advisory Committee for the Purity of Water 4
3.4 Develop and Improve Drinking Water Quality Regulation 4
3.5 Work to Protect Drinking Water Catchment Areas 4
4.0 ADMINISTRATION OF DRINKING WATER QUALITY 4
4.1 Adoption of Drinking Water Guidelines 4
4.2 Current Drinking Water Quality Requirements 4
4.3 Variations to Standard Quality Specifications 5
4.4 Additional Quality Specifications 5
4.5 Exemptions 5
4.6 Schedules to the MoU 5
4.7 Ministerial Approval to vary Standard Quality Specifications 5
4.8 Water Corporation Quality Obligation 5
4.9 Safe Water Supply 5
5.0 OTHER FORMS OF WATER SUPPLY 5
5.1 Water Supply Classifications 5
5.2 Water Quality Regulation 6
6.0 SYSTEMS ANALYSIS AND MANAGEMENT 6
6.1 Monitoring Programs 6
6.2 Water Quality Management Processes and Procedures. 6
6.3 Source Protection 6
6.4 Monitoring Programs 6
6.5 Water Analysis 6
7.0 MATERIALS AND CHEMICALS 7
7.1 Materials in Contact with Water 7
7.2 Chemicals Approved for Addition to Drinking Water. 7
7.3 Chemicals Used to Maintain Water Treatment and Distribution Systems. 7
7.4 Chemicals and Materials Used in Drinking Water Catchment Areas. 7
7.5 Seeking Approval 7
8.0 DATA EXCHANGE 7
8.1 Corporation Data 7
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8.2 Department Data 8
8.3 Special Investigations 8
8.4 Information Exchange 8
8.5 Confidentiality 8
8.6 Reporting Formats 8
9.0 EVENTS OF PUBLIC HEALTH SIGNIFICANCE 8
9.1 Framework 8
9.2 Notifiable Events 8
9.3 Corporation to Report 9
9.4 Department to Respond 9
9.5 Declaration of Unsafe Drinking water 9
9.6 Maintenance of Incident Response Plans 9
9.7 Incident Response Plan Training and Exercises 9
9.8 Monthly Coordination Meeting 9
10.0 PUBLIC HEALTH NECESSITY 9
10.1 Background 9
10.2 Determination 9
10.3 Declaration 10
10.4 Communication 10
11.0 PUBLIC EDUCATION AND INFORMATION 10
11.1 Public Education 10
11.2 Corporation Annual Quality Report 10
11.3 Department Annual Quality Report 10
12.0 IMPLEMENTING THE 2004 AUSTRALIAN DRINKING WATER
GUIDELINES 10
12.1 Background 10
12.2 Implementation of Framework 10
13.0 EMERGING ISSUES 10
13.1 Monitoring and Response 10
14.0 STATUTORY REQUIREMENTS 11
14.1 Fluoridation of Public Water Supplies 11
14.1.1 Administration 11
14.1.2 Operational Review 11
14.1.3 Public Education 11
14.2 Pesticides 11
14.2.1 Use of Pesticides in Catchments 11
14.2.2 Review of PSC 88 11
15.0 GENERAL ADMINISTRATION 11
15.1 Contracts 11
16.0 ROLE OF THE DEPARTMENT OF HEALTH 12
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16.1 Role 12
16.2 As Regulator 12
16.3 As Adviser to the Corporation 12
16.4 As Resource 12
16.5 As Auditor 12
16.6 As Adviser to the Public 12
16.7 To Provide Public Notification – Specific needs 12
17.0 TERM REVIEW AND AMENDMENT 13
17.1 Expiry 13
17 2 Amendment of MOU Upon Agreement 13
17.3 Amendment of Binding Protocols and Schedules upon Agreement 13
18.0 ENDORSEMENTS 14
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Memorandum of Understanding
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1.0 Foreword
This Memorandum of Understanding (MoU) continues the strong co-operative
relationship that exists between the Water Corporation (Corporation) and the
Department of Health (the Department) for managing drinking water quality in
Western Australia.
This MoU acknowledges that significant changes have occurred in the water
industry in Western Australia since 1996. The 2006 amendment incorporates
the 2004 Australian Drinking Water Guideline ‘Framework’, approach and is
designed to integrate all facets of the drinking water quality management and
assurance system.
Foremost in this MoU is the reinforcement of the Department of Health as the
regulator of drinking water quality in the State. Consequently this MoU
enables the Department to audit the Corporation’s water quality, management
and reporting systems to provide assurance of ongoing satisfactory
performance.
Both the Department and the Corporation recognise that the practices and
processes used to establish and maintain high levels of drinking water quality
need to be open and transparent to the community. Both organisations
commit to ensure that performance will be reported in a timely manner and
open to public scrutiny. As this momentum develops, the requirement to
educate the public on water quality issues will need to be jointly addressed by
both agencies.
This MoU has been designed to respond to change, as significant water
quality issues continue to emerge, both in Australia and around the world. The
2004 Guidelines for Drinking Water Quality published by the World Health
Organization and the 2004 Australian Drinking Water Guidelines identify
catchment management and source protection as key elements of the multi
barrier approach to ensure safe drinking water. Both agencies are committed
to maintain and improve these primary barriers.
Both agencies have contributed to the development of the Drinking Water
Quality Framework arising from the rolling revision of the 1996 Australian
Drinking Water Guidelines. Both agencies now commit to apply the 2004
Australian Drinking Water Guidelines (2004 ADWG) throughout Western
Australia. This will provide a significant opportunity to reinforce the importance
of protecting drinking water through the co-operation and support of many
other parties in all aspects of drinking water supply from the catchment to the
tap.
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1.1 Design of the MoU
This Memorandum of Understanding is modelled, as far as possible, to reflect
the twelve guiding elements of the Framework for Drinking Water Quality
contained within the 2004 Australian Drinking Water Guidelines.
Element
MoU Sections
1 Commitment to drinking water
quality
3.1, 3.2, 3.3, 3.4, 3.5, 4.1, 4.2, 4.3, 4.4, 4.5,
4.6, 4.7, 4.8, 14.1
2 Assessment of the drinking 6.1, 6.3
water supply system
3 Preventative measures for 6.1, 10.0, 12.0
drinking water quality
management
4 Operational procedures and 7.1, 7.2, 7.3, 7.4, 7.5
process control
5 Verification of drinking water 6.1, 6.4
quality
6 Management of emergencies 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 10.1, 10.2, 10.3,
10.4
7 Employee awareness and 9.7
training
8 Community involvement and 11.1, 11.2, 11.3, 14.1.3
awareness
9 Research and development 8.3, 8.4, 13.1
10 Documentation and reporting 8.1, 8.2, 8.5, 8.6
11 Evaluation and audit 16.5
12 Review and continual
improvement
9.8, 13.1
In addition this MoU makes reference to:
Schedules – documents prepared by the Department for general
publication and application within the water industry.
Binding Protocols – documents developed by both the Department and
Corporation for detailing processes and procedures to be followed for
prescribed events. These documents may not necessarily be publicly
available as they may contain operationally sensitive details; and
Water Quality Management Processes and Procedures - documents
prepared by the Corporation to facilitate the operational implementation of
water quality management processes and procedures. These documents
are not publicly available as they may contain operational specific details
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2.0 Interpretation
Corporation means
Department means
Water Corporation
Department of Health
Drinking Water means Water intended primarily for human
consumption but which has other domestic
uses.
Guidelines means
MoU means
Operating Licence means
2004 Australian Drinking Water Guidelines
published by National Health and Medical
Research Council and as amended from time
to time.
Memorandum of Understanding
A licence granted for the purpose of Section
18 of the Water Services Licensing Act 1995.
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3.0 Commitment to Drinking Water Quality
The Corporation and Department are committed to ensure that the community
of Western Australia are provided with safe drinking water now and into the
future. To facilitate this both agencies will:
3.1 Resource the MoU
The Corporation and Department agree to provide adequate resources to
meet the requirements of this Memorandum of Understanding.
3.2 Identify Responsible Officers
An officer will be identified within each organisation who will be responsible for
monitoring, facilitating and reporting to their relevant Chief Executive Officer
(CEO) on the implementation of this Memorandum of Understanding. Binding
Protocol 1 – Responsible Officers identifies the Responsible Officers for the
Corporation and Department.
3.3 Recognise and Support the Advisory Committee for the Purity of Water
The Advisory Committee for the Purity of Water will continue to operate under
its terms of reference under the chairmanship of the Health Department. Both
organisations are committed to the ongoing work of this Committee.
3.4 Develop and Improve Drinking Water Quality Regulation
The Department and Corporation will work cooperatively to develop and
improve health based drinking water regulation in Western Australia.
3.5 Work to Protect Drinking Water Catchment Areas
The Department and Corporation will cooperate in areas of mutual interest to
ensure adequate consideration is given to protect sources of drinking water.
The Department and Corporation will promote primacy of drinking water over
other non-compatible activities in drinking water catchment areas.
4.0 Administration of Drinking Water Quality
The processes for adopting, amending, implementing national and
international drinking water quality processes, procedures, standards and
guidelines are as follows:
4.1 Adoption of Drinking Water Guidelines
Prior to implementation in Western Australia the Guidelines for drinking water
quality are endorsed by the Hon. Ministers for Health and Water Resources.
4.2 Current Drinking Water Quality Requirements
The Department’s current requirements for drinking water quality are
contained within Schedule 1 – Drinking Water Quality Requirements.
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4.3 Variations to Standard Quality Specifications
The Department specifies the quality criteria for drinking water in accordance
with the Guidelines, but has the power to vary the quality criteria in specific
circumstances or for identified supplies, so long as public health is not
compromised.
4.4 Additional Quality Specifications
The Department may set additional quality criteria for the Corporation to
comply with or make interpretations where the Guidelines are considered to
lack relevant specificity. The Department shall consult with the Corporation
and/or the Advisory Committee for the Purity of Water before taking such
action.
4.5 Exemptions
The Department may grant exemptions for certain requirements. Exemptions
may be found in Schedule 2 – Exemptions from Compliance.
4.6 Schedules to the MoU
The Department in consultation with the Corporation and other members of
the water industry may develop schedules to this MoU. The Schedules are
intended to provide supporting information to this MoU and for other drinking
water quality requirements.
4.7 Ministerial Approval to vary Standard Quality Specifications
Variations, additions or exemptions to drinking water quality criteria as
specified in sections 4.3, 4.4 and 4.5 shall be approved by the Minister for
Health.
4.8 Water Corporation Quality Obligation
The Corporation shall supply drinking water that complies with the
Department’s requirements in sections 4.2, 4.3, 4.4, 4.5 and 4.6.
4.9 Safe Water Supply
Where the Corporation supplies drinking water that complies with the
Departments requirements it shall be deemed to be safe.
5.0 Other Forms of Water Supply
5.1 Water Supply Classifications
The Corporation may supply other “water supply services”, defined under four
different classifications:
Standard drinking water service;
Farmlands area water service;
Service provided by agreement; and
Non-potable water.
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5.2 Water Quality Regulation
The Department regulates standard drinking water services. However, the
Department may also regulate other service types to the extent that there is a
risk posed to public health. The Department’s conditions for the various
service types are listed in Schedule 3 – Requirements for Various Water
Types.
6.0 Systems Analysis and Management
The Corporation and Department shall maintain and apply an effective system
to assure drinking water quality. To facilitate this, the Corporation and the
Department may develop:
6.1 Monitoring Programs
In consultation with the Department the Corporation shall develop, maintain
and implement a drinking quality water monitoring program throughout its
organisation that identifies all relevant regulatory and formal requirements.
6.2 Water Quality Management Processes and Procedures.
In consultation with the Department, the Corporation may develop, maintain
and review drinking water quality management processes and procedures.
Processes and procedures that have been endorsed by the Department are
shown in Binding Protocol 2 – List of Water Quality Management Processes
and Procedures .
6.3 Source Protection
The Corporation and the Department recognise their responsibility in source
protection and will carry out hazard identification and risk assessment where
required to ensure reliability of public water supplies. Where risks are
identified within catchments, the Corporation and Department will respond to
reduce the risks.
6.4 Monitoring Programs
The Corporation shall develop and maintain monitoring programs in
accordance with specifications approved by the Department. The Department
may develop and undertake monitoring programs itself in special
circumstances.
6.5 Water Analysis
All samples shall be submitted to laboratories that perform analyses and tests
that are registered by the National Association of Testing Authorities unless by
agreement with the Department.
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7.0 Materials and Chemicals
7.1 Materials in Contact with Water
The Corporation shall only use materials in contact with drinking water that
have been approved either under Australian Standard AS 4020 or by the
Department. Materials approved for contact with water are listed in Schedule
5 - Approved Materials and Schedule 6 - Materials Assessed - Not Requiring
Approval (Subject to Condition). Materials that have been submitted to the
Department but have not been approved are listed in Schedule 4 - Chemical
and Materials Assessed - Not approved.
7.2 Chemicals Approved for Addition to Drinking Water.
The Corporation shall only add chemicals to drinking water that have been
approved for use by the Department. Chemicals that have been approved for
addition to drinking water by the Department are listed in Schedule 7 -
Chemicals Approved for Addition to Drinking Water.
7.3 Chemicals Used to Maintain Water Treatment and Distribution Systems.
The Corporation shall only use chemicals to maintain drinking water treatment
and distribution systems that have been approved by the Department. The
Department may specify operational procedures to be followed to ensure that
drinking water contamination does not occur. Approved chemicals and
operational procedures are listed in Schedule 8 - Chemicals and Procedures
used to maintain water treatment and distribution systems.
7.4 Chemicals and Materials Used in Drinking Water Catchment Areas.
The Corporation shall ensure that chemicals applied to and used within
catchment areas for purposes other than direct improvement of water quality
have been approved by the Department. The Department may specify
operational procedures to be followed to ensure that drinking water
contamination does not occur. Approved chemicals and procedures are listed
in Schedule 9 Chemicals and Materials Used in Catchment Areas.
7.5 Seeking Approval
The Corporation may seek advice from the Department with respect to the
suitability of materials, chemicals and procedures described in sections 7.1,
7.2, 7.3 and 7.4.
8.0 Data Exchange
8.1 Corporation Data
The Corporation will undertake to make available statistically valid results to
the Department of its water-sampling program in a format and with a
frequency agreed to by the Department. The Corporation will also provide the
Department with access to the full results of its water sampling if and when
required.
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8.2 Department Data
The Department will provide the Corporation with reports and studies it
undertakes which are relevant to those activities of the Corporation which
impact on public health.
8.3 Special Investigations
The Corporation will provide access to reports and studies undertaken by the
Corporation as part of its business which are relevant to public health.
8.4 Information Exchange
Each party will provide a program of their respective public health related
research and development activities associated with the provision of water
services. Either party can place confidentiality constraints on the information
and data that it provides.
8.5 Confidentiality
Information provided by either party shall not be published without the
approval of the information source.
8.6 Reporting Formats
The Department and Corporation will work cooperatively to establish reporting
formats.
9.0 Events of Public Health Significance
9.1 Framework
From time to time it may be necessary for the Corporation to notify the
Department of events that may have a potential to affect public health. The
joint response action will depend upon the nature of the event and the
potential risk to public health.
There are three levels of response to events that affect the safety of drinking
water:
Activation of the Joint Agency Coordination Plan (JACP)
– high level public health impact, immediate public notification required.
Events Level 1
- medium level public health impact with potential to require public
notification and activation of the JACP
Events Level 2
– low level public health impact requiring exception notification.
9.2 Notifiable Events
Notifiable events and the corresponding response protocols are described in
Binding Protocol 3 - Joint Agency Co-ordination Plan and Binding Protocol 4 -
Water Provider Exception Protocol.
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9.3 Corporation to Report
The Corporation shall report to the Executive Director Public Health any event
within its own water supply systems, schemes or assets operated under
contract which may have significant implications for public health in
accordance with Binding Protocol 4 - Water Provider Exception Protocol.
9.4 Department to Respond
The Department will provide a 24 hour point of contact for the reporting of any
such events, in order that the Executive Director Public Health can determine
whether any action should be taken in accordance with Binding Protocol 4 -
Water Provider Exception Protocol.
9.5 Declaration of Unsafe Drinking water
Where necessary, the Executive Director Public Health shall declare water to
be unfit for human consumption and specify methods of treatment or
alternative sources of supply. The Executive Director Public Health shall also
rescind such declarations promptly when no longer necessary.
9.6 Maintenance of Incident Response Plans
The Corporation and Department agree to jointly maintain and review incident
response plans for the Corporation's drinking water supply systems.
9.7 Incident Response Plan Training and Exercises
The Corporation and Department agree to jointly undertake staff training for
incident response plans and conduct joint exercises.
9.8 Monthly Coordination Meeting
The Water Corporation and Department agree to meet on a monthly basis to
review and analyse joint management systems.
10.0 Public Health Necessity
10.1 Background
There are times when the failure of the Corporation's assets could pose a
threat to public health, e.g. the loss of water supply etc. Under normal
conditions the Corporation will take action to rectify such occurrences.
However, situations such as industrial action may arise to prevent the
Corporation from meeting these obligations.
10.2 Determination
In the event of a public health necessity the Corporation may request the
Executive Director Public Health to determine whether the event constitutes a
risk to public health.
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10.3 Declaration
The Executive Director Public Health may declare an event to constitute a risk
to public health and require immediate preventative or remedial action to be
taken.
10.4 Communication
The communication protocols outlined in Binding Protocol 4 - Water Provider
Exception Protocol Events Level 1 shall be used.
11.0 Public Education and Information
11.1 Public Education
The Department and Corporation shall jointly develop public education
programs relating to drinking water quality as required.
11.2 Corporation Annual Quality Report
The Corporation shall prepare a report for the Department each year that lists
drinking water quality testing conducted and their results in an agreed format.
11.3 Department Annual Quality Report
The Department shall prepare a summary annual drinking water quality report
incorporating data from all water providers.
12.0 Implementing the 2004 Australian Drinking Water Guidelines
12.1 Background
The 2004 Australian Drinking Water Guidelines (2004 ADWG) continues the
rolling revision process described in the Guidelines. The 2004 ADWG
incorporates an integrated quality assurance framework that is designed to
manage drinking water quality from catchment to tap. This approach is
significantly different to the existing management structure and will require the
adoption of a multi agency continual improvement system.
12.2 Implementation of Framework
The Department and Corporation will work cooperatively with other
stakeholders to implement the 2004 ADWG within Western Australia during
the period of this MoU.
13.0 Emerging Issues
13.1 Monitoring and Response
The Department and Corporation will monitor and discuss emerging issues
currently not addressed by the Guidelines or this Memorandum of
Understanding that may be of public health significance.
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14.0 Statutory Requirements
14.1 Fluoridation of Public Water Supplies
14.1.1 Administration
The Department is the agency principally assisting the Minister for Health in
the administration of the Fluoridation of Public Water Supplies Act 1966 (the
Act) and the provisions of the Act are binding on the Corporation.
14.1.2 Operational Review
The Department and Corporation will work to review the operational and
monitoring requirements of the Act to ensure that the requirements of the Act
are effectively met in a cost efficient manner.
14.1.3 Public Education
The Department will be responsible for public communication and education
with respect to issues of fluoridation.
14.2 Pesticides
The Department and Corporation are committed to the protection of drinking
water from pesticides and will continue to cooperate and encourage
involvement of key stakeholders to minimise the risk of drinking water
contamination.
14.2.1 Use of Pesticides in Catchments
The Corporation shall not use nor permit the use of pesticides in drinking
water catchments and areas of water storage except in accordance with PSC
88 “Use of Herbicides in Water Catchment Areas” or its replacement.
14.2.2 Review of PSC 88
The Department, in consultation with the Corporation and other key
stakeholders, shall review PSC 88 and develop Guidelines for use of
Pesticides in Water Catchment and Storage Areas.
15.0 General Administration
15.1 Contracts
The Corporation may contract to operate and maintain water supply schemes
and assets that are owned by others. Unless specifically stated in the contract
the Corporation may not be in a position to accept responsibility for ultimate
scheme or asset performance. The Corporation shall notify the Department in
the event that a contract restricts the ability to respond to an issue of public
health significance. The Department will seek to initiate remedial actions of all
parties concerned.
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16.0 Role of the Department of Health
16.1 Role
The Department’s roles are to:
minimise human exposure to environmental health hazards that pose or
have the potential to pose a health risk;
reduce the incidence and impact of communicable disease.
16.2 As Regulator
The Department is the Regulator of drinking water quality and sets out its
requirements to the Economic Regulation Authority for incorporation into the
Operating Licence.
16.3 As Adviser to the Corporation
The Department shall provide advice to the Corporation on matters regarding
the supply of water from catchment to tap.
16.4 As Resource
The Department in consultation with the Corporation shall provide public
comment on issues related to drinking water from catchment to tap.
16.5 As Auditor
The Department may audit the Corporation’s systems and databases used to
manage and report drinking water quality in relation to the following sections of
this MoU as required. (Generally this will occur prior to the Economic
Regulation Authority audit):
4.0 Administration of Drinking Water Quality.
6.0 Systems Analysis and Management
7.0 Materials and Chemicals
8.0 Data exchange
9.0 Events of public health significance
The audit scope will be prepared by the Department and discussed with the
Corporation. The audit report should include recommendations for
improvements. The CEO’s shall endorse the audit report and timetable for
improvements. The responsible officers shall provide regular progress
reports. The Cost of the audit shall be borne by the Corporation.
16.6 As Adviser to the Public
In consultation with the Corporation, the Department will provide prompt
advice to the public, including media, with respect to water quality issues
16.7 To Provide Public Notification – Specific needs
In consultation with the Corporation the Department is responsible to notify
health care providers of drinking water quality issues that may effect the
public. For example:
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In the case of nitrate concentrations between 50 and 100 mg/L the
Department shall notify community health nurses in the areas effected.
17.0 Term Review and Amendment
17.1 Expiry
The term of this Memorandum shall be five (5) years.
17 2 Amendment of MOU Upon Agreement
The CEOs can amend this Memorandum at any time upon agreement.
17.3 Amendment of Binding Protocols and Schedules upon Agreement
The responsible officers can amend the Binding Protocols and Schedules to
this Memorandum of Understanding at any time upon agreement.
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18.0 Endorsements
Signed
Dr Neil Fong
DIRECTOR GENERAL
DEPARTMENT OF HEALTH
Signed
Dr J I Gill
CHIEF EXECUTIVE OFFICER
WATER CORPORATION
Date:
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Schedule 1 - Drinking Water Quality Requirements
DoH expects all drinking water providers to comply with the microbiological, (health)
chemical and radiological parameters specified by the 2004 Australian Drinking
Water Guidelines (ADWG).
With respect to Naegleria, no sample should contain any Naegleria species tolerant
to 42° C and above. Water providers should achieve a rolling annual compliance of
not less than 95 percent or as specified by the Department of Health.
The Department of Health will approve departures from the guidelines for individual
supplies as it may judge appropriate in light of public health considerations as shown
in Schedule 2 – Exemptions from Compliance.
The Department of Health expects drinking water providers to implement the
Framework for Management of Drinking Water Quality contained within the 2004
ADWG.
The Department of Health has not set a time period for the full implementation of the
framework of the 2004 ADWG as it is considered that this work is ongoing.
Nevertheless, it expects tangible progress towards full implementation to be
demonstrable in each year of the currency of a provider’s licence.
All drinking water providers should aim to comply, as far as practicable, with the
Guidelines for non-health related characteristics as set out in the 2004 ADWG.
However, bearing in mind the high levels of public expenditure which would be
required to achieve full compliance in respect of some small water supplies, it is
accepted that achievement of this aim may take many years.
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SCHEDULE 2 – Exemptions from Compliance
The following schemes have been granted exemption from compliance with Nitrate
guidelines
REGION
SCHEME/TOWN
Mid West
Cue
Meekatharra
Mt Magnet
Nabawa
New Norcia
Sandstone
Wiluna
Yalgoo
Goldfields & Agricultural
Laverton
Leonora
Menzies
Water supplied by the above schemes may contain nitrate concentrations between 50
and 100 mg/L. Consumption of this water does not pose a risk to adults. However,
nitrate concentrations between 50 and 100mg/L can cause adverse health effects in
infants under three months of age.
The Department through the Community Health Nurse will advise carers of infants less
than three months to use alternative water sources to prepare bottle feeds.
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SCHEDULE 3 –Requirements for Various Water Service Types
Four broad levels of water service are set to meet a range of Operating Licence
requirements such as pressure, flow and water quality throughout Western Australia.
The following water quality provisions apply to each service type.
1. Standard drinking water service
A Standard drinking water service is a connection to a water supply that is
treated to comply with Schedules 1 and 2 of this Memorandum of Understanding
and the standards and principles of the Operating License.
The Department expects the water supply to comply with all of the provisions of
Schedules 1 and 2 of this Memorandum of Understanding.
2. Farmlands area water service
Farmlands area water is water that has been originally treated to a standard
drinking water service standard. However, after long detention times in extended
pipeline systems it may not comply with microbiological provisions of the
guidelines although it would still be compliant with the chemical provisions of
Schedules 1 and 2.
The Department expects the water supply to comply with the chemical and
radiological provisions of Schedule 1 and 2 in addition to the following
conditions:-
2.1. Customers shall be advised to make their own arrangements for treatment
at the point of use to ensure compliance with drinking water quality
guidelines if the water is to be used for drinking;
2.2. Immediate notification by the Corporation to customers taking up this form
of service and upon change of ownership; and
2.3. An annual reminder of the water quality conditions.
3. Service provided by agreement
Some services by agreement are fully compliant with drinking water quality
requirements but cannot meet pressure and flow provisions. Other services by
agreement can include services where, due to lack of treatment or operational
requirements, the Corporation cannot provide assurance on water quality such
that it will meet the provisions of Schedules 1 and 2 at all times. The water
provided under a service by agreement will have come from a drinking water
catchment.
The Department expects the Corporation to advise consumers either that the
water fully complies with drinking water quality requirements OR the water does
Schedule 3 Printed on 31/10/07 Page 1

Memorandum of Understanding
for
Drinking Water
not meet one or more of the microbiological, chemical and/or radiological
compliance in accordance with the following conditions:
3.1. Customers are advised to make their own arrangements for water treatment
if to be used for drinking;
3.2. Immediate notification by the Corporation to customers taking up this form
of service and upon change of ownership; and
3.3. An annual reminder of the water quality conditions.
4. Non Potable Water
Non potable water is water such as treated wastewater, irrigation or other
untreated water supplies for which there is no intention that it should ever be
used for human consumption. Such water may not originate from a drinking
water catchment. The Department expects the following actions to be taken
where customers are provided non-potable water:-
4.1. Customers are advised the water is not to be used for drinking;
4.2. Immediate notification by the Corporation to customers taking up this form
of service and upon change of ownership; and
4.3. An annual reminder of the water quality conditions.
Schedule 3 Printed on 31/10/07 Page 2

Memorandum of Understanding
for
Drinking Water
SCHEDULE 4 – Chemicals and Materials Assessed - Not Approved
The following table includes products that have been presented to the Department
of Health and have not been approved for use in association with any drinking
water application.
DoH
REF
88/80
90/24
88/80
90/24
88/80
90/24
88/80
90/24
90/81
63
90/81
63
90/81
63
88/80
90/13
88/80
90/39
88/80
90/01
88/80
90/18
88/80
90/43
88/80
90/16
88/80
90/28
88/80
90/43
88/80
90/22
90/81
63
88/80
90/51
88/80
90/23
Year
Assessed
1990
1990
1990
1990
1991
1991
1991
1989
1991
1990
1991
1991
1989
1990
1991
1990
1991
1992
1989
PRODUCT COMPANY REASON
Calcure Type D Cementaid Pty Ltd Failed to complete assessment
Calform NX Cementaid Pty Ltd Failed to complete assessment
Calstrip Cementaid Pty Ltd Failed to complete assessment
Caltite Cementaid Pty Ltd Failed to complete assessment
Dow Corning
Silicone 780
Dow Corning
Australia
Failed to complete assessment
Durapond
Duram Coating Failed testing
Products
Elastoseal Crommelin Chemicals Failed to complete assessment
Elasto-thane 227R ICI Building Products Failed to complete assessment
Halar Fluoropolymer ACPS Lined Systems Failed to complete assessment
Resin
HIP2835 Stabiliser Hardie Iplex Failed to complete assessment
Interpon HD 3005
epoxy powder
coating
Taubmans Pty Ltd Failed to complete assessment
Isopthalic Resin ICI Dulux Resins Failed to complete assessment
(KEM 142)
Metallic Zinc Spray John McCoy & Assoc Failed to complete assessment
Nutra Rust 661 Burwood Agencies Failed to complete assessment
Orhtopthalic Resin
(73-2020)
Polyethylene Resin
Hostalen GM 5010
Procure (Sprayable
rubber)
Rafpoxy A52 High
Build
RCL Polyester Resin
ICI Dulux Resins
David Moss Trading
Pty Ltd
Dunlop Industrial
products
Raffles Paints
RCL resinous
Chemicals
Failed to complete assessment
Failed to complete assessment
Failed to complete assessment
Failed to complete assessment
Failed chemical leachate
testing
Schedule 4 Printed on 27/07/09 Page 1
Schedule 4
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
88/80
90/42
88/80
90/21
88/80
90/35
88/80
90/29
88/80
90/24
88/80
90/06
Year
Assessed
1991
1990
1990
1990
1990
1994
PRODUCT COMPANY REASON
Red Mud Plastic J P Distributors Failed to complete assessment
Secoseal 200 Expandite (Australia)
Pty Ltd
Failed to complete assessment
Shamir Epoxy Amiad Australia Pty Failed to complete assessment
Polyester
Ltd
Steel it coatings Specialty Metals Failed to complete assessment
Superplastet SR Cementaid Pty Ltd Failed to complete assessment
Tank lining High
Build Epoxy
Courtaulds (Australia)
Pty
Failed to complete assessment
Schedule 4 Printed on 27/07/09 Page 2
Schedule 4
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
SCHEDULE 5 – Approved Materials
The Executive Director, Public Health has examined and approved the following
products (linings, paints, resins etc) for potable water applications.
The following table includes products compliant to ‘AS 4020 Testing of products for
use in contact with drinking water’, that have been presented to and noted by the
Department of Health.
Any product compliant to AS4020 may be used in contact with drinking water without
application to the Department of Health. However, care should be taken to ensure
compliance with all appendices of the Standard. (Department of Health notification is
recommended).
This list does not include water treatment chemicals (See MoU Schedule 7) or
chemicals and procedures used to maintain water treatment and distribution
systems (see MoU Schedule 8).
DoH
REF
88-
08090/14
EHB-
02152
92-
08036
88-
08090/4
99-
06176
92-
08036/5
88-
08090/36
00-
06044
92-
08036/5
92-
08036/4
Year
Approved
1989
2009
1992
1989
1999
1994
1990
2000
1994
1993
PRODUCT
A Catt Suppressor
Valve
Aquatain
Acothane Solvent
Free Coating
(brush grade)
Acryl 60
COMPANY
J A Industries
Aquatain Products
Pty Ltd
Great Western
Chemicals
RESTRICTION OR
COMMENT
Water Hammer
Suppressor Valve
Refer to DoH approval
conditions.
Coating
ICI Building Coating
Products
Akzo Nobel Tubemakers Sealant to cement mortar
Interline 876 Australia
lined water supply mains.
Ameron RP-34C Wenco Pty Ltd, Epoxy adhesive
adhesive
O'Connor, WA
Anzopol 3329003 Anzol Pty Ltd Resin for manufacture of
pipes, fittings etc.
AV 600M
Grace
Acrylic modifier as an
Construction adhesion medium.
Products
Bondstrand Series
2000 pipe
Bostik 2638 Gungrade
polyurethane
sealant
Wenco Pty Ltd,
O'Connor, WA
Bostik (Australia)
Pty Ltd
Glass-reinforced epoxy
water pipe
Joint and gap sealer
Schedule 4 Printed on 14/03/12 Page 1
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
Year
Approved
PRODUCT
COMPANY
RESTRICTION OR
COMMENT
92-
08036/4
88-
08090
88-
08090
88-
08090
92-
08036/14
92-
08036/14
86-
00940
86-
00940
86-
00940
92-
08036
92-
08036
88-
08090
1993
1984
1986
1986
1990
1994
1985
1986
1986
1997
1997
1985
1986
Bostik N49 primer
(used with Bostik
2638)
Butynol
Carboline 191 4B
Topcoat
Carboline 191
Primer
Chesterton 855
Abrasion Control
Liquid
Chesterton ARC
SC2 Abrasion
Control Fluid
Chevron Industrial
Membrane
Colturiet EHB
Colturiet GPL
Conbextra GP
Concure WB30
Copon EA9
Corrocoat EPl
Bostik (Australia)
Pty Ltd
Shelter
Engineering Pty
Ltd
Vessey
Chemicals (WA)
Pty Ltd
Vessey
Chemicals (WA)
Pty Ltd
John Venables
John Venables
CIM Distributors
Wattyl-Sigma
Coatings Wattyl-
Sigma Coatings
Wattyl-Sigma
Coatings Wattyl-
Sigma Coatings
Fosroc Expandite
NSW
Fosroc Expandite
NSW
Dimet Western
Australia
Corrocoat Aust Pty
Ltd
Primer for joint and gap
sealer
Rubber Lining
Coating. After complete
curing, coating must be
thoroughly rinsed with
potable water prior to
being placed into service.
Coating. After complete
curing, coating must be
thoroughly rinsed with
potable water prior to
being placed into service.
Application to small
surface areas
Application to small
surface areas
Mt Yokine Reservoir only.
Product must comply with
US EPA specifications
Coating
Coating
General purpose nonshrink
cementitous grout.
Retains moisture in
concrete for effective
curing.
Coating. Must be matured
for a least 7 days after
application and before
contact with potable water
Coating
Schedule 4 Printed on 14/03/12 Page 2
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
88-
08090/31
88-
08090/31
92-
08036/8
92-
08036/8
86-
00940
EHB-
01509
EHB-
01480
88-
08090/30
EHB-
01339
92-
08036/13
88-
08090/2
88-
08090/17
Year
Approved
1992
1992
1933
1986
2009
2009
1990
2009
1994
1985
1989
0a07th1a 2010
90-
08163
99-
06075
88-
08090/19
88-
08090/33
1991
1999
1989
1991
1b21th1a 2011
88-
08090
1989
PRODUCT
Corroguard EP
Corroless RF35
Cotene 9121/70A
Black
Coterie 9121/70A
Black
Crystic 491
Deacon 360-FG
Denso Butyl Primer
& Tape
Derbigum SP
Bitumen Membrane
Devcon Brushable
Ceramic
Drizoro Maxplug
COMPANY
Corroless
Australia/Pics-
Axlo Gp. PO Box
265 Altona Vic
3018
Corroless Australia
/ Pics- Axlo Gp.
PO Box 265
Altona Vic 3018
Birwick march Pty
Ltd
Solco International
Monsanto
Australia
Deacon Industries
Inc.
Denso (Australia)
Pty Ltd
Derbit Australia
ITW Polymers &
Fluids
Great Western
Coatings
Dulux Australia
RESTRICTION OR
COMMENT
Epoxy, reinforced fibre
coating for water tanks
Epoxy, reinforced fibre
coating for water tanks
Construction of solar hot
water systems
Solar hot water system
Polyethylene liner
Coating
Reseal packing glands of
sluice valves.
Corrosion prevention of
tank steel columns
Lining material
Corrosion control
Concrete & masonry gap
filler
Coating
Dulux Epoxy
Bildcote
Dulux Ferrodor Dulux Australia Coating. Natural Steel
EPX Epoxy Paint
Grey, St Enoch Grey
Dupont Tank Tan Dupont Adherence to NSF 61
EFT-602-P7
approval conditions
Dyna Valve-Jumper Aplitek (Qld) Matro Tap washer
Valve
Labs
EPDM compound Tyco Water Pty Pressure seal in steel
5567
Ltd
pipelines
Emastak
Gating Pty Ltd, Flush for ten days and
Barry Arnold drain to waste
Epigen 1311 Pearless
Waterproof coating
Industries Systems
Epirez 633
ITW Polymers and Mortar binder
fluids
Exit Rust Exit Rust Corp Pre-treatment of metallic
surfaces
Schedule 4 Printed on 14/03/12 Page 3
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
92-
08036
88-
08090
88-
08090
EHB-
03010
88-
08090
88-
08090
88-
08090
88-
08090/09
00-
06044
88-
08090/50
88-
08090/26
88-
08090
88-
08090
92-
08036
92-
08036/3
92-
08036/3
92-
08036/9
Year
Approved
1997
1989
1986
2011
1986
1986
1988
2000
1992
1990
1985
1985
1997
1993
1993
1993
PRODUCT
COMPANY
Expandafoam Strip Fosroc Expandite
NSW
Thermotec
Australia NSW
Ferroguard Newcastle
Chemicals
Fibretak
Calmarc
Chemicals
Flexus Shotbond ITW New Zealand
Ltd
Fluigide
Fluigide E
Gipchem
Permaflex
Glass Fibre
Reinforced
Polyester
GPR
Gruvlock
Compound
EP10059
Hobas,
Centrifugally Cast
GRP Pipes
Hot Water
Resistant Epoxy
Hycote 151
Hydrocell
Hydrotite CJ 0725-
3K Rubber Sealant
Hydrotite SS 0220
Rubber sealant
Innotech Rain
Water Tanks
Corrocoat
Australia Pty Ltd
Corrocoat
Australia Pty Ltd
Gippsland
Chemicals
FG Industries
Grace
Construction
Products
Grinnell Supply
Sales
James Hardie and
Coy Pty Ltd
Taubmans Pty Ltd
Underwater
technology corp
Fosroc Expandite
NSW
Thermotec
Australia NSW
Corkjoint
(Australia) Pty Ltd
Corkjoint
(Australia) Pty Ltd
Innotech
Industrial
Supplies, WA
RESTRICTION OR
COMMENT
Joint filler in concrete
Pre-treatment of metallic
surfaces
Coating
Lining of drinking water
pipes. Contact DoH for
approval conditions.
Coating
Coating
Mt Yokine Reservoir only
Storage tank construction
Water reducing agent for
mortar mixes
Gasket sheeting, cold
water use only
Water Pipes
Coating. Must be matured
so that the migration of
organic solvents into
water is minimised
Coating
Joint filler in concrete
Sealant for concrete
joints
Sealant for concrete
joints
Polyethylene water tanks
for domestic supply
Schedule 4 Printed on 14/03/12 Page 4
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
88-
08090/27
Year
Approved
1990
1c20th1a 2011
88-
08090/5
88-
08090/46
90-
08163
88-
08090
00-
06180
88-
08090/45
92-
08036
88-
08090/40
EHB-
03010
88-
08090/8
88-
08090/10
88-
08090
88-
08090/12
1988
1991
1992
1986
2001
1991
1997
1991
2011
1991
1988
1986
1989
PRODUCT
Interline 925
Solventless Epoxy
Resin (water tank
lining)
Interline 975 Part
A & B
Krystol
COMPANY
Taubmans Pty Ltd
International Paint
Crommelin
Chemicals (WA)
RESTRICTION OR
COMMENT
Coating
Leakmaster LVI Polyfoam Pty Ltd Sealant
Magnaspheres
(granules)
Merco 219
MIEX DOC Resin
Neste 0909
polyethylene
manufacture
Nitocote EP405
Noverox AX/Sx
Nukote ST
Polyurea
Nylex Potable
Membrane
Nylon tapping
bands
Steetley
Bestobell
Engineering
Products
Orica Advanced
Technologies
Morris White Pty
Ltd
Fosroc Expandite
NSW
General &
Technical
Distributors,
Balcatta WA
Nukote
Distributions Pty
Ltd
Nylex Corp Aust
Stockbrands Pty
Ltd
Stockbrands
Company Pty
In-line and tank liner
Coating – product must
be cured for 14 days
before use
Increased pH of acid
water
Coating
Water treatment system
Lining material. Tanks to
be flushed before use
Lining and water-proofing
of tanks
Hot water tank and pipe
anti-rust compound
Liner in potable water
tanks. Contact DoH for
approval conditions.
Lining material
1. Must be applied to
outer surfaces of water
pipes. 2. Underground
pipes only.
Pabkote Pabco Products Emulsion for water
proofing
Peratol
BTR Industrial
Products Pty Ltd
Sealant. Must be cured
for 5 days after
application and water
must be held a further 10
days once the storage
tank or reservoir is filled.
Schedule 4 Printed on 14/03/12 Page 5
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
88-
08090
88-
08090
88-
08090
88-
08090
86-
00940
86-
00940
03-
06935
97-
07042
88-
08090/38
88-
08090
92-
08036
92-
08036
Year
Approved
1986
1986
1987
1985
1986
1986
2003
1997
1991
1989
1997
1997
PRODUCT
COMPANY
RESTRICTION OR
COMMENT
Pliseal AC
Calmarc
Chemicals
Coating
Pliseal S B Calmarc
Coating
Chemicals
Polyethylene Pipes Industrial Pipe Pipes
Systems
Polyglass "VE" Corrocoat (Aust) Vinyl ester resin glass
reinforced
PU 119
Ludavici JC & Son Washers
Ltd
PU40
Ludavici JC & Son Washers
Ltd
PV Liquid Vinyl Industrial Coating Protective membrane
(PV311-Top) Solutions PTY Ltd
Qualipoly
Qualipoly
Fabrication of fibreglass
Isophthalic Chemical Corp. water tanks.
Polyester Resin Taiwan ROC
K530
Radcon #7 Crommelin Coating
Chemicals (WA)
Ranex rust Landra Nominees Pre-treatment of metallic
converter
Renderroc HB40
with SBR primer
Renderroc LA55
Pty Ltd
Fosroc Expandite
NSW
Fosroc Expandite
NSW
surfaces
High performance
medium-weight concrete
reinstatement mortar.
Single component freeflowing
low alkali microconcrete.
Renderroc S Fosroc Expandite Single component
92-
NSW
structural grade polymer
1997
08036
modified concrete
reinstatement mortar.
1c15th1a 2011 Resicoat® R4-ES Akzo Nobel Internal coating in valves
88-
08090
EHB-
03010
88-
08090/48
88-
08090/37
1989
2011
1991
1991
1987
Revenge rust
converter
Scubapox 1725
Sigmaguard
CSF75
Silkaflex 1 a
Strataflo
Landra Nominees
Pty Ltd
National
Maintenance
Products Pty Ltd
Wattyl (Qld)
Sika Aust Pty Ltd
Willetton, WA
Towner & Sons
Pty Ltd
Pre-treatment of metallic
surfaces
Sealant for cracks in
service tanks and
reservoirs.
Coating. Water
containers to be flushed
before use.
Sealing small surface
areas, joints, cracks, etc
Bone casing, only.
Formulation to remain
same
Schedule 4 Printed on 14/03/12 Page 6
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
92-
08036
92-
08036
88-
08090
88-
08090
88-
08090/4
92-
08036/10
88-
08090/34
90-
08163
88-
08090
88-
08090
88-
08090
80-
08090
88-
08090/2
88-
08090/15
Year
Approved
1997
1997
1985
1985
1989
1993
1990
1992
1986
1986
1986
1990
1990
1989
2306th1a 2012
2306th1a 2012
EHB-
01339
88-
08090/49
2010
1992
PRODUCT
Supercast PVC
Supercast SW
Taubmans Clear
Silicone Epoxy
Taubmans HiBuild
Epoxy (Series 70)
Thoroseal
Thortex Cerami-
Tech CR
COMPANY
Fosroc Expandite
NSW
Fosroc Expandite
NSW
Taubmans
Taubmans P/L
ICI Building
Products
Simtech Sales &
Services, Carine
WA
RESTRICTION OR
COMMENT
Waterstop
Waterstop
Coating
Coating
Coating
Solvent-free lining
material for pumps, pipes
etc. Cold water
applications only.
Trafab (Aqualiner) Rheem Aust Lining material water
tanks
Tubemakers Tubemakers Pty Lubricant for cold water
rubber ring joint Ltd
applications only.
lubricant No 2
Tufcote: Flexiglas
(with Tufcote)
Tufseal 24S
Flexiglas (with
Attaflex)
Tufseal 35E;
Fibretak
Turbomag
Electromagnetic
water treatment
system
UPVC Pressure
Pipe
Ureseal 270
Vandex BB75-Z
Vandex Plug
VESPEL CR-6100
Vinidex Jointing
Lubricant
Calmarc
Chemicals
Calmarc
Chemicals
Calmarc
Chemicals
Turbomag
Australia Pty Ltd
Humes Plastics
Pty Ltd
ICI Building
Products
Parchem
Construction
Supplies Pty Ltd
Parchem
Construction
Supplies Pty Ltd
DuPont De
Nemours Int.
Vinidex
Tubemakers Pty
Ltd
Coating
Coating
Coating
Scale & corrosion
removal
Pipes
Reservoir sealant
Water Proofing reservoir
walls
Plugging areas of
leakage on reservoir
walls
Wear resistance bearing
material
Lubricant for rubber ring
joints
Schedule 4 Printed on 14/03/12 Page 7
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
DoH
REF
Year
Approved
PRODUCT
COMPANY
RESTRICTION OR
COMMENT
80-
08090
04-
07215
EHB-
03010
EHB-
01290
88-
08090/20
88-
08090/20
1988
2005
2011
2009
1992
1992
Waterplug
WR-525 Carbon
Fibre Reinforced
PEEK (polyaryletherketone
polymer)
Composite
Yokoham floating
fender pneumatic
ZAVLAR Liquid
Rubber
Z Bond roof and
gutter silicone
sealant
Z Bond V60
Glazing silicone
ICI Building
Products
Victrex plc
Yokohama
Liquid Rubber
Australia
Rhone Poulenc
Rhone Poulenc
Direct application cracked
pipes
Drinking water pumping
applications
Plug on scour pipes.
Internal coating for
clearwater tanks
Sealants for joints, rivets,
screws
Sealants for joints, rivets,
screws
Notes
DoH
Department of Health (Western Australia)
Schedule 4 Printed on 14/03/12 Page 8
Schedule 5
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

Memorandum of Understanding
for
Drinking Water
SCHEDULE 6 - Materials Assessed - Not Requiring Approval (Subject to
Condition)
The following table includes products that have been presented to and noted by
the Department of Health but do not require approval as they are to be
removed before drinking water is produced or used in accordance with the
restrictions or comments stated below.
DoH
REF
04-
06089
04-
06089
04-
06089
04-
06089
04-
06089
04-
06089
04-
06133
EHB-
01281
EHB-
01281
04-
06133
04-
06089
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
Year
Assessed
PRODUCT
2004 AMC Pac L
2004 AMC Pac R
2004 Aus-Det
2004 Aus-Dex
2004 Aus-Gel Xtra
2004 Bio-Vis
2004
Ciba Alcomer
72L
2009 DRILPLEX HDD
2009 FLO-PLEX
2004 Hibitrol HV
2004 Liqui-Pol
2012
Matex BIT-
COOL
COMPANY
Australian Mud
Company Pty
Australian Mud
Company Pty
Australian Mud
Company Pty
Australian Mud
Company Pty
Australian Mud
Company Pty
Australian Mud
Company Pty
ADG Technology
Pty Ltd
M-I Swaco Pty
Australia
M-I Swaco Pty
Australia
ADG Technology
Pty Ltd
Australian Mud
Company Pty
Airdrill Pty Ltd
2012 Matex DD605L Airdrill Pty Ltd
2012 Matex DD955 Airdrill Pty Ltd
2012 Matex DD2000 Airdrill Pty Ltd
2012
2012
Matex 1560 XS
FOAM
Matex DD
XPAND
Airdrill Pty Ltd
Airdrill Pty Ltd
RESTRICTION OR
COMMENT
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
Schedule 4 Printed on 14/03/12 Page 1
Schedule 6
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Memorandum of Understanding
for
Drinking Water
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
2111t
h1a
04-
06133
EHB-
01281
04-
06133
04-
06133
EHB-
01281
04-
06133
04-
06133
EHB-
01281
EHB-
01281
04-
06133
04-
06089
2012
2012
2012
2012
2012
Matex E.S.
THREAD
COMPOUND
Matex FORM A
CORE
Matex HOLE
CONTROL
Matex
RDO302ES
Matex SALT VIS
P
Airdrill Pty Ltd
Airdrill Pty Ltd
Airdrill Pty Ltd
Airdrill Pty Ltd
Airdrill Pty Ltd
2012 Matex SALT-VIS Airdrill Pty Ltd
2012
2012
2012
2012
2004
Matex SAND
DRILL
Matex
TORQUELESS
Matex
ULTRAVIS
Matex VIBRA
STOP
Max Gel Polypac
– All grades
2009 MAX GEL
2004
Poly-Plus
(Liquid)
2004 Poly-Plus Dry
2009 POLYSWELL
2004
2004
Potassium
chloride
Potassium
hydroxide
2009 RINGFREE
2009 ROD EASE
2004
SAPP
(Sodium acid
pyrophosphate)
2004 Well-Clean
Airdrill Pty Ltd
Airdrill Pty Ltd
Airdrill Pty Ltd
Airdrill Pty Ltd
ADG Technology
Pty Ltd
M-I Swaco Pty
Australia
ADG Technology
Pty Ltd
ADG Technology
Pty Ltd
M-I Swaco Pty
Australia
ADG Technology
Pty Ltd
ADG Technology
Pty Ltd
M-I Swaco Pty
Australia
M-I Swaco Pty
Australia
ADG Technology
Pty Ltd
Australian Mud
Company Pty
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
To be removed from final
production water.
Schedule 4 Printed on 14/03/12 Page 2
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Memorandum of Understanding
for
Drinking Water
04-
06089
2004 Xan-Bore
Australian Mud
Company Pty
To be removed from final
production water.
Notes
DoH
Department of Health (Western Australia)
Schedule 4 Printed on 14/03/12 Page 3
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Memorandum of Understanding
for
Drinking Water
SCHEDULE 7 -
Chemicals Approved For Addition To Drinking Water.
Chapter 8, Drinking water treatment chemicals of the 2004 Australian Drinking Water
Guidelines describe processes, procedures and chemicals that have been approved
for use in drinking water.
The following list is a compilation of chemicals either accepted or approved by the
Department of Health for use in drinking water.
This list does not include chemicals and procedures used to maintain water treatment
and distribution systems (see MoU Schedule 8) or materials approved for use in
contact with drinking water (see MoU Schedule 5).
CHEMICAL FORMULA REFERENCE
Aluminum
chlorohydrates
Aluminum sulphate
(alum)
Ammonia (ammonium
hydroxide)
AlCl(OH) 5 NHMRC 2005
Al 2 (SO 4 ) 3 AWWA B403-82
NH 3 (aq) FCC p. 20-21
RESTRICTION OR
COMMENT
Ammonium sulphate (NH 4 ) 2 SO 4 AWWA B302-81
Aquamax RO608 - 0a045a
Calcium carbonate
CaCO 3 DoH 06-06032
Redgate Lime
Calcium chloride CaCl 2 DoH 04-06352
Calcium hydroxide Ca(OH) 2 AWWA B202-83
Drinking water treatment
chemical contaminants
shall not exceed the RMIC
as described by Chapter 8.8
of ADWG.
Max rate 100 mg/L
Food grade (99%)
(Contaminants

Memorandum of Understanding
for
Drinking Water
CHEMICAL FORMULA REFERENCE
Calgon T
Carbon, granulated
activated (GAC)
Carbon, powdered
activated (PAC)
Sodium
hexametaphosphate
AWWA B502-83
C AWWA B604-96
C AWWA B600-78
RESTRICTION OR
COMMENT
Chlorine Cl 2 AWWA B301-81
Chlorine dioxide ClO 2 NHMRC 2005
Calcium hypochlorite Ca(OCl) 2 AWWA B300-80
Calcium hydroxide Ca(OH) 2 AWWA B202-83
Copper sulphate CuSO 4 .5H 2 O AWWA B602-80
Ferric chloride FeCl 3 .6H 2 O AWWA B407-83
Ferric sulphate Fe 2 (SO 4 ) 3
Granular Activated
Alumina (DD – 6)
Al 2 O 3
NHMRC 1983
(95th Session,
p.27)
NSF/ANSI
Standard 61
GMA Garnet Fe 3 Al 2 (SiO 4 ) 3 DoH EHB-1085
Hydrex 4101 - 0a18th2a
Hydrex 4102
Hydrex 4129
1811th1a
1811th2a
Hydrex 4701 - 0a04th3a
Hydrex 4703 - 0a04th4a
Hydrex 4705 - 0a18th1a
Drinking water treatment
chemical contaminants
shall not exceed the RMIC
as described by Chapter 8.8
of ADWG. Not approved
for use by individual
(home) consumers
Contact Department of
Health for information
Contact Department of
Health for information
Contact Department of
Health for information
Contact Department of
Health for information
Contact Department of
Health for information
Contact Department of
Health for information
Schedule 4 Printed on 18/08/11 Page 2
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Memorandum of Understanding
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Drinking Water
CHEMICAL FORMULA REFERENCE
Hydrex 4710 - 0a18th1a
Hydrex 4715 - 0a05th1a
RESTRICTION OR
COMMENT
Contact Department of
Health for information
Contact Department of
Health for information
Hydrochloric acid HCl ADWG 2005
Hydrofluosilicic acid
(Fluosilicic acid)
H 2 SiF 6 AWWA B703-84
Hydrogen peroxide H 2 O 2 FCC p.146-147
Hydroxylated ferric
sulphate
NHMRC 2005
Hypersperse MDC220 - 0a04th7a
Hypersperse MSI300 - 0a04th6a
Magnetite Fe 3 O 4
Ozone O 3 ADWG 2004
Phoslock - 06-06384
Polyacrylamides and
acrylic acid polymers
and copolymers
(CH 2 CHCONH 2 ) 8
and
(CH 2 CHCOOH) 8
Polyaluminium chloride Al 8 (OH) 10 SO 4 Cl 12
Polyaluminium silicate
sulfate
Polydimethyldiallyl
ammonium chloride
Potassium
permanganate
Silver hydrogen
peroxide
-
NHMRC 1977,
1979 (84 th Session,
p.22 and 88th
Session, p.21
NHMRC 1979
(88th Session,
pp.17-18)
ADWG 2004
NHMRC 1982
(93rd Session,
pp.19-20)
KM 8 O 4 AWWA B603-83
Ag + .H 2 O 2
NHMRC 1989
(107 th Session
p17)
Sodium alginate - FCC p.274
Contact Department of
Health for information
Sodium aluminate NaAlO 2 AWWA B405-83
Schedule 4 Printed on 18/08/11 Page 3
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Memorandum of Understanding
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Drinking Water
CHEMICAL FORMULA REFERENCE
RESTRICTION OR
COMMENT
Sodium bicarbonate NaHCO 3 FCC p.278
Sodium carbonate Na 2 CO 3 AWWA B201-80
Sodium chloride NaCl AWWA B200-78
Sodium fluoride NaF AWWA B701-84
Sodium fluosilicate
(Sodium silicofluoride)
Sodium
hexametaphosphate
Na 2 SiF 6 AWWA B702-84
(NaPO 3 ) 6 AWWA B502-83
Sodium hydroxide NaOH AWWA B501-80
Sodium hypochlorite NaOCl AWWA B300-80
Sodium metabisulphite Na 2 S 2 O 5 DoH 06-06237
Drinking water treatment
chemical contaminants
shall not exceed the RMIC
as described by Chapter 8.8
of ADWG
Sodium silicate
Sodium
tripolyphosphate
Na 2 O.xSiO 2
(x = 3-5)
AWWA B404-80
Na 5 P 3 O 10 ADWG 2004
Sulphuric acid H 2 SO 4 FCC p.317-18
Tanamet crystals - DoH 07-06010
Zinc orthophosphate Zn 3 (PO 4 ) 2
NHMRC 1987
(104 th Session
p32)
Drinking water treatment
chemical contaminants
shall not exceed the RMIC
as described by Chapter
8.8 of ADWG.
Not approved for use by
individual (home)
consumers
Notes
ADWG “Australian Drinking Water Guidelines” 2004
AWWA American Water Works Association Standards
DoH Department of Health (Western Australia)
Schedule 4 Printed on 18/08/11 Page 4
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Memorandum of Understanding
for
Drinking Water
FCC Food Chemicals Codex, 3rd Edition, 1981
NHMRC National Health and Medical Research Council (Australia)
NSF / ANSI NSF International / American National Standards Institute
Schedule 4 Printed on 18/08/11 Page 5
Schedule 7
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Memorandum of Understanding
for
Drinking Water
SCHEDULE 8 - Chemicals and Procedures used to maintain water treatment
and distribution systems
The following chemicals and procedures used to maintain water treatment and
distribution systems have been approved by the Department of Health.
Water treatment systems may include membrane, reverse osmosis and ultra violet
filtration plants. Water distribution systems include bores, mains and tanks.
This list does not include water treatment chemicals (see MoU Schedule 7) or
materials in contact with drinking water (see MoU Schedule 5)
DoH
REF
06-
06194
88-
08090/
07
2215th
1a
2215th
2a
2215th
3a
2215th
5a
2215th
4a
1610
th1a
1613
th1a
Year
Approved
PRODUCT COMPANY RESTRICTION OR COMMENT
2006 Adsorbsia GTO
Titanium Based
Adsorbent
1990 ALBA Bore
Treatment
Antibacterial
Dow Chemical
(Australia) Ltd
Chem
Chemicals and
Malcolm
Thompson
Pumps
2012 AWC A-102 Plus AS Harrison &
Co Pty Ltd
2012 AWC A-103 AS Harrison &
Co Pty Ltd
2012 AWC A-109 AS Harrison &
Co Pty Ltd
2012 AWC C-236 AS Harrison &
Co Pty Ltd
2012 AWC C-205 AS Harrison &
Co Pty Ltd
2011 Belgard EV2050 BWA Water
Additives
2011 Belite M8 BWA Water
Additives
Arsenic removal.
Arsenic monitoring to be
conducted in the reticulated
supply as a “key characteristic”,
until the lifespan of the product is
determined.
Flush bore for 30 minutes after
application
Antiscalant in RO systems.
Contact DoH for conditions of
approval.
Antiscalant in RO systems.
Contact DoH for conditions of
approval.
Antiscalant in RO systems.
Contact DoH for conditions of
approval.
Membrane cleaner.
Contact DoH for conditions of
approval.
Membrane cleaner.
Contact DoH for conditions of
approval.
Antiscalant in desalination
plants. Dosing rate to not
exceed 8 mg/L.
Defoamer in seawater distillation
plant. Dosing rate not to exceed
0.1 mg/L in feed stream.
Schedule 4 Printed on 14/03/12 Page 1
Schedule 8
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Memorandum of Understanding
for
Drinking Water
DoH
REF
EHB-
00870
92-
08036/
06
92-
08036/
07
01-
06614
EHB-
00009
2117th
1a
Year
Approved
PRODUCT COMPANY RESTRICTION OR COMMENT
2008 Bio D-Scaler Bio Green
Chemicals Pty
Ltd
Treated equipment to be flushed
until water is clear.
1993 Boreclean Boretech, Qld Rehabilitation of water bores.
Product to be diluted to 10% and
flush bore for 30 minutes before
use.
1993 Boreclean forte Carela
Australia Pty
Ltd
2001 Boresaver Ultra C Aquabiotics
Pty Ltd
2008 BluBac
BluBac Xtra
Clearbore Pty
Ltd
2012 Calstat RO-30 WAT Australia
Pty Ltd
Rehabilitation of water bores.
Product to be diluted to 10% and
flush bore for 30 minutes before
use.
Residual levels of copper and
oxalate must comply with
drinking water guidelines.
Flush equipment with at least 5
times the total treated volume with
untreated water, or until pH is
within 0.5 pH units of the original
untreated water.
RO system antiscalant.
Contact DoH for conditions of
approval.
88-
08090/
32
EHB-
00102
06-
06331
2104th
1a
07-
06281
2007 DBNPA
2,2-dibromo-3-
nitrilopropionamide
85-
01121/
6
1610
th1a
1990 Carrela-Bio-Plus
Carrel a-Bio-Plus-
Forte
George
Roberts and
Associates
2007 Citric Acid Redox
Chemicals
2006 Clearbore Clearbore Pty
Ltd
2012 Copper Citrate Consolidated
Chemical
Company
1986 Fertan Rust
Converter
DOW
Chemicals
Fertan
Australia &
New Zealand
2011 Floclean MC3 BWA Water
Additives
Application for bore treatment and
water tanks (cleaning,
disinfection) Flush bore for 30
minutes after treatment.
To clean ultra filtration
membranes. Isolate membranes
from drinking water stream. Soak
in water for 30 minutes prior to
return to service.
Post treatment flushing and
testing required
Contact DoH for conditions of
approval.
To remove membrane
biofouling. Operational
conditions apply.
Rust treatment only
RO membrane cleaner. Contact
DoH for approval conditions.
Schedule 4 Printed on 14/03/12 Page 2
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Memorandum of Understanding
for
Drinking Water
DoH
REF
1610
th1a
1610
th2a
1610
th3a
1610
th4a
Year
PRODUCT COMPANY RESTRICTION OR COMMENT
Approved
2011 Floclean MC11 BWA Water RO membrane cleaner. Contact
Additives
2011 Flocon 135 BWA Water
Additives
2011 Flocon 190 BWA Water
Additives
2011 Flocon 260 BWA Water
Additives
DoH for approval conditions.
Antiscalant in RO systems.
Dosing rate not to exceed 10
mg/L.
Antiscalant in RO systems.
Dosing rate not to exceed 10
mg/L.
Antiscalant in RO systems.
Dosing rate not to exceed 5 mg/L.
1610
th5a
1610
th6a
2222
th1a
2222
th1a
2109th
1a
2109th
1a
EHB-
00869
EHB-
01731
1c08th
1a
00-
06180
88-
08090/
47
1928
th1a
1817
th2a
2011 Flocon 285 BWA Water
Additives
2011 Flocon Plus N BWA Water
Additives
2012 GE Betz
Hypersperse
MDC704
2012 GE Betz
Hypersperse
MSI410
2012 GE Betz Kleen
MCT 103
2012 GE Betz Kleen
MCT 511
GE Betz Pty
Ltd
GE Betz Pty
Ltd
GE Betz Pty
Ltd
GE Betz Pty
Ltd
2008 Glycerol Klen
International
2009
Hypersperse
MDC707
2011 Manganese (II)
Sulphate
Monohydrate
GE Betz Pty
Ltd
Chem Supply
Pty Ltd
2001 MIEX DOC Resin Orica
Advanced
Technologies
1991 Occtech D24 Occtech Corp.
Pty Ltd
O’Connor, WA
2011 Osmoclean CD Osmoflo Pty
Ltd
2011 Osmoclean DW Osmoflo Pty
Ltd
Antiscalant in RO systems.
Dosing rate not to exceed 9 mg/L.
Antiscalant in RO systems.
Dosing rate not to exceed 10
mg/L.
Antiscalant in RO systems.
Contact DoH for conditions of
approval.
Antiscalant in RO systems.
Contact DoH for conditions of
approval.
RO membrane cleaner
Contact DoH for conditions of
approval.
RO membrane cleaner
Contact DoH for conditions of
approval.
Membranes to be purged to
waste before being used to
supply drinking water.
Antiscalant for RO membranes
Filter media conditioning.
Contact Department of Health
for approval conditions
Water treatment system
Water treatment for pipes
(corrosion)
Contact Department of Health
for approval conditions
Contact Department of Health
for approval conditions
Schedule 4 Printed on 14/03/12 Page 3
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Memorandum of Understanding
for
Drinking Water
DoH
REF
1817
th1a
1a03
th2a
1a03
th1a
88-
08090/
44
EHB-
03010
EHB-
03010
EHB-
03010
Year
Approved
2011 OsmoDechlor Osmoflo Pty
Ltd
PRODUCT COMPANY RESTRICTION OR COMMENT
2011 Osmotreat DS Osmoflo Pty
Ltd
2011 Osmotreat Si Osmoflo Pty
Ltd
Contact Department of Health
for approval conditions
Contact Department of Health
for approval conditions
Contact Department of Health
for approval conditions
1991 PALTEM Balfour Beatty Pipeline Auto Lining System
2011 PermaClean PC 77 Nalco Filtration membrane cleaner.
Contact DoH for conditions of
approval.
2011 PermaClean PC 98 Nalco Filtration membrane cleaner.
Contact DoH for conditions of
approval.
2011 PermaClean PC 99 Nalco Filtration membrane cleaner. Contact
DoH for conditions of approval.
06-
06356
2006 Permatreat PC
1020
Ondeo Nalco
Membrane antifoulant. Chapter
8, ADWG conditions apply.
06-
06355
2006 Permatreat PC
191
Ondeo Nalco
Membrane antiscalant. Chapter
8, ADWG conditions apply.
06-
06357
2006 Permatreat PC
510
Ondeo Nalco Silica antifoulant. Chapter 8,
ADWG conditions apply.
06-
06384
2111th
1a
95-
06134
2007 Phoslock Phoslock
Water
Solutions
2012 Plantic TFR
V2019 PVA Bags
Plantic
Technologies
Ltd
2002 PVA (bags) Orica
Chemicals
Limited reservoir trial application
subject to specific conditions.
For the dosing of sodium
fluoride. Contact DoH for
conditions of approval.
PVA bags used to contain
fluoride compounds.
06-
06480
99-
06524
2007 Quantum Filtration
DMI 65
2003 Quinplex White Oil
(4010 H1)
Quantum
Filtration
Medium Pty
Ltd
Iron/Manganese removal.
Chapter 8, ADWG conditions
apply.
Artesian bore lubricant
1b15th
1a
2011 Rhodamine WT Abbey Color Tracer dye. Contact DoH for
conditions of approval.
Schedule 4 Printed on 14/03/12 Page 4
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Memorandum of Understanding
for
Drinking Water
DoH
REF
2103th
1a
86-
00940
88-
08090/
41
88-
08090/
41
88-
08090/
41
Notes
Year
Approved
PRODUCT COMPANY RESTRICTION OR COMMENT
2012 Sodium Lauryl
Sulphate
1985 Turbomag
Electromagnetic
Water Treatment
System
1992 Wellchem
Claysperse –
Downhole
Dispersant
1991 Wellchem Nu
Antibac Downhole
Bacterial Acid
1992 Wellchem Well
Clean – Downhole
Antibacterial Acid
KLEN
International
(74) Pty Ltd
Turbomag
Australia Pty
Ltd
Challenge
Chemicals
Australia
Challenge
Chemicals
Australia
Challenge
Chemicals
Australia
Membrane cleaner. Contact DoH
for conditions of approval.
Scale & corrosion removal and
prevention
Flush bore for 30 minutes
Flush bore for 30 minutes
Flush bore for 30 minutes
ADWG
DoH
“Australian Drinking Water Guidelines”
Department of Health (Western Australia)
Schedule 4 Printed on 14/03/12 Page 5
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Memorandum of Understanding
for
Drinking Water
SCHEDULE 9 - Chemicals and Materials Used in Catchment Areas
The following products have been assessed and approved by the Department of
Health for use in catchment areas.
This list does not include water treatment chemicals (See MoU Schedule 7),
materials in contact with drinking water (see MoU Schedule 5) or chemical and
procedures used to maintain water treatment and distribution systems (see MoU
Schedule 8).
DoH
REF
EHB-
2152
03/
7168
04/
6898
06/
6330
Year
Approved
2009
2009
2006
2007
PRODUCT
COMPANY
RESTRICTION OR
COMMENT
Aquatain Ultimate Products Contact Department of
(Aust) Pty Ltd
Health for information
Road Master Road Master Pty Ltd Road base stabilization
PK-4 (surface
stabilizer)
Polycom
Eco Enzymes
Australia
Biocentral
Laboratories
Only surfaces that are
not subjected to
continual immersion
may be treated.
Follow manufacturer’s
instructions.
Schedule 4 Printed on 12/02/10 Page 1
Schedule 9
Healthy Workforce•Healthy Hospitals•Healthy Partnerships•Healthy Communities•Healthy Resources•Healthy Leadership

CIRCULAR NO: PSC 88
SUBJECT :
USE OF HERBICIDES IN WATER CATCHMENT AREAS
______________________________________________________________________
Purpose
PSC 88 is for the purpose of protecting surface and ground water sources that are used
as sources of water for human consumption from contamination by herbicides. The
document is a best practice policy statement that applies to all government
departments and their contractors.
Definitions
The term "Water Catchment Area" refers to:
(a)
(b)
(c)
proclaimed public drinking water source areas (i.e. water reserves, catchment
areas and underground water pollution control areas proclaimed under the
Country Areas Water Supply Act 1947 or Metropolitan Water Supply, Sewerage
and Drainage Act 1909), and
reserves vested for the purpose of water supply; and
any other area that is designated by licensed water service providers and the
Department of Water and confirmed by the Executive Director, Public Health
"Blanket Area Spraying" means the application of herbicide by boom sprayer, aircraft,
misting machines, and like apparatus capable of treating a wide swath at one pass and
these swaths being matched by continuous passes.
1. Other than with the expressed written approval of the Executive Director, Public
Health, the only herbicides that may be used in water catchment areas are:
2,4-D
amitrole
fluazifop-p-butyl
glyphosate
hexazinone*
triclopyr
metsulfuron methyl - only when used for hand/spot spraying of weeds (eg
blackberry and cape tulip)
*(hexazinone can affect native vegetation and therefore should be used with care
or advice sought from the Department of Environment where sensitive native
plants are present.)

2. These herbicides may only be used when no other means are suitable for the
control of weeds.
3. 2,4-D may only be used when the weeds are resistant to the other specified
herbicides or when other chemicals are not sufficiently selective.
4. The specified herbicides may be used against declared plants and other undesired
weeds on water catchments and water channels or in the vicinity of reservoirs
provided timings, techniques and precautions ensure there is no spray drift or
early run off from treated areas likely to contaminate reservoirs, rivers or
streams. All applications must be under the supervision of a person experienced
in the use of herbicides.
5. Application is to be limited to injection techniques or direct spraying of individual
weeds or clumps of weeds by apparatus producing a coarse or large droplet spray.
Other than with the expressed written approval of the Executive Director, Public
Health, blanket area spraying is not acceptable.
6. No mixing of the herbicide is to occur within 50 metres of reservoirs, rivers or
streams. Except with the written permission of the Executive Director, Public
Health, no application is to be made within 20 metres of reservoirs or rivers and
streams when flowing. Application may be made within 20 metres of dry river
and stream beds during the summer months.
7. Empty containers and all equipment to be removed from the catchment area
before washing and disposal.
8. Other than with the expressed written approval of the Executive Director, Public
Health, any unused herbicide is to be removed from the catchment area and no
other herbicide except for immediate requirements is to be stored there.
9. Rates of application, safety directions and precautions on labels of the original
container of the herbicide shall be strictly adhered to.
10. Records of the amounts and dates of use of herbicides on catchments are to be
retained. They maybe required for investigation of incidents or complaints.
Dr M Stevens
Delegate of the
EXECUTIVE DIRECTOR, PUBLIC HEALTH
29 August 2006