NATIONAL WATER COMMISSION HANOVER PARISH PLAN

NATIONAL WATER COMMISSION
HANOVER PARISH PLAN
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1 Introduction
Hanover is located on the North Western side of Jamaica and is bordered on the
east by St. James, and on the South by the parishes of Westmoreland; the
Caribbean Sea forms the northern and western boundary of the parish. The parish
has a mountainous terrain, with the coastline marked by coves and bays. Hanover
covers an area of 430 km 2 . The highest point in the parish is the Dolphin's Head,
which serves as a landmark for ships at sea. The parish has three small waterfalls,
several coves, such as the Davis Cove, named after a prominent Hanover family,
along its coastline and large caves. In the centre of Lucea stands a clock tower.
Though it was installed in 1817, it is still fully functional.
. Hanover is known for the production of yams, sugar cane, ginger, rice, pimento,
turmeric, breadfruit and arrowroot. Hanover is celebrated for its fine breeds of cattle.
The principal towns are Lucea, Green Island, Hopewell, and Sandy Bay.
The tourism industry has played a major role in the economic activity of the parish.
A deep-water pier was built, but this has been restricted only to the shipping of molasses. In
1983, the port was closed, but the old Fort Charlotte still stands at one side of the entrance
to the harbour. The major hotels are located along the coastline.
National Water Commission (NWC) produces some 635,457 m3/month of water per
month in Hanover through five (5) surface sources. The average billed volume from
16,813 accounts is only 275,695 m 3 /month which translates to average nonrevenue
water (NRW) of 359,762 m 3 /month i.e. 57% of production. This
unacceptable level of NRW has had an adverse impact on the level of service
provided to the people of the parish, on its financial performance and that of NWC.
NWC now provides water to some 80.78% of the population in Hanover, which is a
marginal improvement over that in 2001 when the level of coverage was 74%. The
reliability of service to those who are served by NWC is estimated to average 18
hours per day. The average utilization rate of the parish is 79.70%. Total length of
pipeline within the parish is 455 km with varying material types from CI, AC, GI,
PVC, ST and DI.
A Water Supply Improvement plan has been prepared for the parish and is
presented in this document. The WSIP for the parish will involve an expenditure of
$5.4732 billion over the next twenty years in carrying out a number of water supply
rehabilitation and upgrading works. A substantial portion of the proposed works is
aimed at addressing the unacceptable level of NRW through the replacement of
major sections of the aged and undersized water supply infrastructure and
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improvement in water supply pressure management. It is planned to increase water
supply coverage to 93% of the parish population by end 2030, reduction in NRW to
30% and service reliability to 24 hours per day at that time.
2 Existing Water Supply System
2.1 Water Resource
Surface Water
Some 100% of the water abstracted in the parish is obtained from surface sources.
The following are the main surface sources in the parish:
Shettlewood Spring
Cascade
New Milns
Logwood
Kendal
2.2 Water Supply Systems
The water supply network throughout the parish is aged and undersized,
contributing to unacceptable level of service there. Information on the water supply
network is summarized in table 2.1 below.
Figure 2.1 – Hanover Water Supply
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Table 2.1 – Summary Information on Hanover Pipe Network
Pipe
Diameter
(inches)
Approximate
Length (km)
Portion of
the
Network
(%)
0.50 5.77 1.30%
0.75 12.79 2.88%
1 44.13 9.94%
2 19.82 4.47%
2 111.68 25.16%
3 41.74 9.40%
4 80.61 18.16%
6 31.87 7.18%
8 15.35 3.46%
9 0.89 0.20%
10 19.78 4.46%
12 31.63 7.13%
14 0.90 0.20%
18 6.79 1.53%
20 20.10 4.53%
443.85
3 NON-REVENUE WATER LEVELS
Set out in figure 3.1 is the annual water balance for Hanover. This was derived from
the water balances that were prepared for each of the water supply systems in the
parish. The water balances are based on flow measurements that were conducted
for sections of the water supply network as well as examinations of customer
records.
NWC water production facilities in the parish provide approximately 7.5 million cubic
meters (1.7 billion gallons) of water per year to the water supply network. Physical
losses amount to 3.5 million cubic meters (0.77 billion gallons) per year. This
represents 46.8% of the amount produced.
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Revenue water in the parish is only 3.3 million cubic meters, which is 42.6% of the
water produced. The remaining 0.7 million cubic meters relate to commercial
losses.It would be noted that 0.61M cubic meters of water is attributed to
unauthorized consumption (i.e. 8.1% of production). This is largely due to illegal
connections to sections of the water transmission main for use in informal
settlements.
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Figure 3.1 – Water Balance for Hanover
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4 Water Requirement
4.1 Parish Population
General
In 2001 the population in Hanover was 67,067, which was a 1.01% increase over the
66,108 in 1991. Based on an annual population growth rate of 1.01%, it is estimated
that the population in the parish in 2010 is 67,884 persons.
There were 16,767 households in 2001 of which 12,228 had piped water (74%). There
are now 16,817 customer accounts. Based on this information, it is estimated there was
a 2% increase in the number of dwellings with piped since 2001, an average annual
increase of 0.4%. It is estimated that 80.8% of the population of the parish now has
piped water.
Demand Centres
The enumeration districts (EDs) that were used in the 2001 population census was used
to establish priority areas that will be targeted to be provided with water supply. EDs
with population densities in excess of 150 persons per square kilometres were grouped
to form these demand centres.
Figure 4.1 – Demand Centres
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Pipeline
TYPES OF DATA
Subdivision
Enumeration
District (ED)
- Population Data
WATER DEMAND CENTRES
Light Blue Shaded EDs
-Pop > 150p/sq Km
-Priority given to fully supply
Pump
Station
As far as possible, each demand centre (DC) is linked to a water supply system. It is
related to a water distribution system that now serves it or has the potential to serve by
it.
Set out in table 4.1 is information showing the population in each DC, indicating
estimates for 2010, 2015, 2030.
Name of
Water Supply
System
Population
to be Served
2010
Population
to be Served
2015
Population
to be Served
2020
Population
to be Served
2025
Population
to be Served
2030
CASCADE 3,100 3,534 4,029 4,593 5,236
KENDAL 2,555 2,913 3,320 3,785 4,315
NEW MILNS 6,550 7,467 8,512 9,704 11,063
SHTTLEWOOD 14,096 16,069 18,319 20,884 23,808
LOGWOOD 57,285 65,305 74,448 84,870 96,752
The estimated total 2010 population in the DCs is shown to be 6,374 (9.4% of parish
population)
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4.2 Current Water Requirement
Supply
System
Production
gal/day)
Population
Domestic
Water
Requirement
(gal/day)
Commercial &
Other Water
Requirement
(gal/day)
Technical
Losses
(gal/day)
Total Water
Requirement
(gal/day)
Supply
Surplus/Deficit
(gal/day)
Cascade 28,650 3,100 124,000 13,778 13,179 150,957 (122,307)
Kendal 41,600 2,555 102,200 11,356 19,136 132,692 (91,092)
New Milns 106,400 6,550 262,000 29,111 48,944 340,055 (233,655)
Shettlewood 567,721 14,096 563,840 62,649 261,151 887,640 (319,920)
Logwood 5,408,083 57,285 2,291,400 1,659,290 2,487,718 6,438,408 (1,030,325)
TOTAL 6,152,453 83,586 3,343,440 1,776,183 2,830,128 7,949,751 (1,797,298)
The current water supply situation in Hanover is that, overall, there is insufficient
water in the parish to meet the water requirement, even with the existing technical
losses (leaks, tank overflows, etc). There is a current water supply shortfall of some
2.7 mgd based on the existing water production levels and the water requirement in
the Demand Zones combined.
The average daily water production in the parish is 5.7 mg; the average day water
requirement (domestic, commercial, institutional, etc) in the Demand Zones is
estimated to be 5.8 mgd. Technical losses estimated to be 2.7 mgd.
Set out in the tables below are water supply scenarios based on whether the level
of technical losses are addressed and reduced to 30% at most or the conditions
remain the same. It would be noted that the deficit would increase to 3.8 mgd.
Water Requirement in 2030 – Supply Conditions Remain Unchanged
Supply
System
Production
gal/day)
Population
Domestic
Water
Requirement
(gal/day)
HANOVER - YR 2030
Commercial &
Other Water
Requirement
(gal/day)
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Technical
Losses
(gal/day)
Total Water
Requirement
(gal/day)
Supply
Surplus/Deficit
(gal/day)
Cascade 28,650 3,708 148,335 16,482 13,179 177,996 (149,346)
Kendal 41,600 3,056 122,257 13,584 19,136 154,977 (113,377)
New Milns 106,400 7,835 313,418 34,824 48,944 397,187 (290,787)
Shettlewood 567,721 16,862 674,496 74,944 261,151 1,010,591 (442,871)
Logwood 5,408,083 68,527 2,741,096 1,984,932 2,487,718 7,213,745 (1,805,663)
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TOTAL 6,152,453 99,990 3,999,603 2,124,766 2,830,128 8,954,497 (2,802,044)
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Water Requirement in 2015 - NRW reduced to 30% of Production
Supply
System
Production
gal/day)
HANOVER - YR 2015 - NRW Reduced to 30%
Commercial
Domestic & Other
Water Water Technical
Requirement Requirement Losses
Population (gal/day) (gal/day) (gal/day)
Total Water
Requirement
(gal/day)
Supply
Surplus/Deficit
(gal/day)
Cascade 32,300 3,242 129,681 14,409 9,690 153,780 (121,480)
Kendal 49,400 2,672 106,883 11,876 14,820 133,578 (84,178)
New Milns 126,350 6,850 274,004 30,445 37,905 342,354 (216,004)
Shettlewood 617,500 14,742 589,674 65,519 185,250 840,443 (222,943)
Logwood 7,125,000 59,910 2,396,386 1,735,314 2,137,500 6,269,200 855,800
TOTAL 7,950,550 87,416 3,496,627 1,857,563 2,385,165 7,739,355 211,195
Water Requirement in 2030 - NRW reduced to 30% of Production
Supply
System
Production
gal/day)
HANOVER - YR 2030 - NRW Reduced to 30%
Commercial
Domestic & Other
Water Water Technical
Requirement Requirement Losses
Population (gal/day) (gal/day) (gal/day)
Total Water
Requirement
(gal/day)
Supply
Surplus/Deficit
(gal/day)
Cascade 32,300 3,708 148,335 16,482 9,690 174,507 (142,207)
Kendal 49,400 3,056 122,257 13,584 14,820 150,661 (101,261)
New Milns 126,350 7,835 313,418 34,824 37,905 386,148 (259,798)
Shettlewood 617,500 16,862 674,496 74,944 185,250 934,690 (317,190)
Logwood 7,125,000 68,527 2,741,096 1,984,932 2,137,500 6,863,527 261,473
TOTAL 7,950,550 99,990 3,999,603 2,124,766 2,385,165 8,509,533 (558,983)
.
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5 Water Supply Improvement Plans
The improvement to the water supply in Hanover will be based on
(a) Reducing the level of technical losses due to the aged water supply network;
(b) Rehabilitating the water facilities to increase output.
NWC has committed to significantly reduce the high level of NRW in the parish of
Hanover. This will include pipeline replacement works and improved pressure
management.
The Logwood Water Treatment Plant is the major plant in the parish, with an installed
treatment capacity of 7.5 mgd. Its average production in recent years has been 5.4 mgd.
The projects will be packaged as presented below. Details on the undertakings are
provided in section 6.
5.2.1 Component A
• Water Treatment Plant and Intake Works Rehabilitation
o Redesign and rehabilitation of Intake Works
o Supply of Spare parts and materials
o Additional stand-by Generating capacity
o New High – lift motors
o Painting of Clarifiers and Filters
5.2.2 Component B
• Rehabilitation, Construction and Expansion of Reservoir
o Rehabilitation and reinstatement of Fish River storage Tank.
o Rehabilitation of Malcolm Heights storage Tank.
o Rehabilitation/extension of Welcome storage Tank.
o New tank at McQuarie.
o Rehabilitation of Friendship Tank storage.
o Installation of New Tank at Chester Castle, Copse and Macfield.
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5.2.3 Component C
• Water Supply Enhancement
o Water Supply system from Black Gate to Welcome Tank.
o Upgrading Sea View, Lookout and Bamboo Water Supply System.
o Cascade, Jericho, Cold Spring and Pondside Water Supply System.
o Brighton Water Supply - Upgrading of the NONPARIEL Water Supply
System.
o Interconnection Logwood system with Bulstrode at Sheffield.
o White Hall and Orange Hill Water Supply.
o Extension of 4.5 km of new 100mm pipe from Keep Left in Lucea to Dry Hill.
o Extension 30 km of 500mm from Point to Logwood.
o Watershed Development in Rural Hanover
o Lay 6 km transmission pipe from Shettlewood to Mt Carey pumping Station.
5.2.4 Component D
• Supply of materials and Equipment and do General NRW reduction
o Active leak detection and Repair.
o Creation of new flow/pressure zones and installation valves.
o Detailed micro DMA investigation (technical/commercial)
o Reconfigure sections of the distribution system
o Controls for all pumps within the distribution.
o House to house service connection investigation and replacement.
o Metering, sizing, replacement and Geo referencing of all customers.
o CS Analysis.
o Updating Hydraulic Model to further simulate the distribution.
o Installation of SCADA system.
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5.2.5 Component E
• Pipeline Replacement Plan
o Replace 6 km of 4” pipe in Lucea.
o Replace 16 km of 12’’ CI & AC with 250mm From Orange Bay PRV to Negril
PRV.
o Replace 21 km of 12’’ AC From Orange Bay PRV to Bulls Bay.
o Replace 2.3 km of 12’’ AC from Rusea’s boundary valve to Malcolm Heights
Tank.
o Replace 2.3 km of 6" AC line that runs from the highway to Prospect and
Kendall.
o Replace 7 km of 4” GI from Summerset road to Westend road.
o Replace 4 km of 12’’ AC from Keep Left to Molasses Tank.
o Replace and upgrade 0.6 km of 3’’ GI from Cambleton to March Town.
o Replace 1 km of 4’’ GI from New Milns Pump Station to Welcome Tank.
o Replace 2 km of 1’’ GI from Axe and Daze to Chigwell.
5.2.6 Component F
• Low Income Settlement Improvement
o Low Income settlement (Red area) water supply and billing improvement.
o Reduction Water consumed or wasted at low income settlements to reduce
the high NRW ratio
o
Improve service by giving one connection per property with meter.
o Abatement of Illegal Connections and conversion to active accounts
5.2.7 Component G
• Pumping Station and Well Rehabilitation
o Rehabilitation of Kendal Intake Sump.
o Shettlewood Intake.
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5.1 Expected Benefits
The detailed audit of the Hanover Supply system will provide information that will be
used to help in defining detailed NRW reduction intervention activities. The results
of the audit will be used to target the most critical sections of the parish water
supply system that require attention and assist in scheduling of the required works.
The information will be used to populate the asset database for the parish which will
form a critical part of the asset management system (AMS) that will be established
for Hanover. A fully functional AMS will be a valuable operational tool that can be
used to sustain the benefits that will be derived from the various projects and
activities that are set out in this document.
Improved network infrastructure
• DMAs, pressure zones, SCADA etc.
Improved network data quality (GIS)
Improved asset management planning
High quality and continuous water supply service
Hydraulic network model
Extension of Service areas
Operational Improvements and Energy savings
Utility staff development
• Specialist technical and managerial know-how
• New technology and the know-how to use it efficiently
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5.1.1 Cost for Improvements - Summary
Item No. Proposed Project for NRW Reduction in Hanover
Budget Cost
in $JB
1
2
Component A
Water Treatment Plant and Intake Works Rehabilitation
Component B
Rehabilitation, Construction and Expansion of
Reservoir
0.3
0.27
3
Component C
Water Supply Enhancement 1.63
4
Component D
Supply of materials and Equipment and do General
NRW reduction
0.41
5
6
7
Component E
Pipeline Replacement Plan 1.826
Component F
0.045
Low Income Settlement Improvement
Component G
Pumping Station and Well Rehabilitation 0.08
8
Sub-Total - Works
Consultancy Engineering Designs:
Consultancy, audit, Engineering Designs and
Construction Supervision Services ~ 20%
4.561
0.9122
Budget : Grand Total 5.4732
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5.1.2 Economic Assessment
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6 Water Supply Projects
6.1 Cascade Demand Zone (H-1)
6.1.1 System Description
Cascade Water Supply System is supplied by a small spring source with an average output
of 35,000 gallons per day.
6.1.2 Service Area
The communities served by the Cascade Water Supply System include: Cascade, Pondside,
Great Valley, Jericho, Retrieve, Claremount, Smithfield, Willoughby and Cold Spring.
6.1.3 Water Requirement
The current population in the DC in Hanover that is served by the Cascade system is
estimated to be 3,100 persons and this is expected to increase to 3,708 persons by 2030.
There is an existing supply deficit of 0.2 mgd and it is projected that this will marginally
increase to 0.24 mgd by 2030 if the supply conditions remain as they are today .
6.1.4 Addressing the Supply Deficiencies
Water Supply Enhancement
It is planned to connect the Cascade Water Supply System to the Great River Water Supply
System, after the Great River Water Treatment Plant is refurbished to produce at its
maximum. This will involve linking to the pumping system from the new 500 mm pipeline
at Mosquito Cove. The proposed project will include the installation of 10km of 150mm
pipe line, two Booster station and the construction of a new 50,000 gallon water storage
tank.
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Miscellaneous Non-Revenue Water Reduction NRW
It is planned to carry out miscellaneous non-revenue water activities on the Cascade water
supply system to include:
• Creation of new flow/pressure zones and installation of gate valves, check valves,
flow control valves, pressure sustaining valves, control mate, air valves throughout
distribution
• Detailed micro DMA investigation (technical/commercial)
• Controls for all pumps within the distribution with pressure switch, timer, surge
vessel to reduce energy and water loss
• House to house service connection investigation, replacement, repairing leaks on
service connection and Consumer to Customer conversion
• Installation of a new telemetry system for flow, level, pressure and water quality
and to create an electronic library including flow, level and pressure data collected
in the past years
Low Income Farming Settlement Environmental Improvement
It is planned to rationalize the supply arrangements in the low income settlements to
reduce the level of commercial losses, providing one connection to each property and
generally converting properties with illegal connections to active customers
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6.1.5 Cost for Improvements
The estimated total cost for the improvement works is $234M as shown below.
Activity Qnty Cost ($)
Installation of 10 km 150 mm DI pipeline 10,000 125,400,000
Construction of booster station and Tank 4,600,000
Miscellaneous NRW activities 50,000,000
Rationalizing supply arrangement in low
income communities
15,000,000
Sub-Total 195,000,000
Engineering & Other Cost 39,000,000
TOTAL 234,000,000
6.1.6 Economic Assessment
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6.2 Kendal Demand Zone (H-2)
6.2.1 System Description
The Kendal Water Supply System is supplied by a small spring source with an average
output of 41,600 gallons per day.
6.2.2 Service Area
The communities served by the Kendal Water Supply System include Kendal, Kendal Top,
Cessnock, Lower and Upper Rock Spring, Grange, Munro and Crib.
6.2.3 Water Requirement
The current population in the DC in Hanover that is served by the system is estimated to
be 2,555 persons and this is expected to increase to 2,672 persons by 2030. There is an
existing supply deficit of 0.15 mgd and it is projected that this will marginally increase to
0.19 mgd by 2030 if the supply conditions remain as they are today .
6.2.1 Addressing the Supply Deficiencies
Intake Works and Pumping Station Rehabilitation
It is planned to repair the sump for the pumping unit at the intake works at the source to
minimize water losses and increase production. Also to include the inter-connection with
150mm pipeline from Logwood system to Prospect to help meet deficit.
Installation of Reservoir (0.02B)
It is planned to design and site a new water storage capacity for the Kendal system.
Miscellaneous Non-Revenue Water Reduction NRW
It is planned to carry out miscellaneous non-revenue water activities on the Kendal water
supply system. These will include house to house service connection investigation,
replacement, repairing leaks on service connection and conversion of illegal users to active
customers.
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Pipeline Replacement/Upgrading
Pipeline replacement will be undertaken as follows:
• Replacement of 1.3 km of 2’’ GI Pipe with 100mm from Kendal to Grange to
improve supply and meet the demand.
• Replacement of 3 km of Pipe 3’’ GI with 100mm from Kendal to Grange to improve
supply and meet the demand.
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6.2.2 Cost for Improvements
The estimated total cost for the improvement works is $118.7M as shown below.
Activity Qnty Cost ($)
Rehabilitation of source intake works 10,000,000
Construction of new water storage tank 20,000,000
Miscellaneous NRW activities 20,000,000
Replacement of 1.3 km of 2’’ GI Pipe with
100mm from Kendal to Grange to improve
supply and meet the demand.
Replacement of 3 km of Pipe 3’’ GI with
100mm from Kendal to Grange to improve
supply and meet the demand.
Rationalizing supply arrangement in low
income communities.
1,300 12,668,500
3,000 29,235,000
7,000,000
Sub-Total 98,903,500
Engineering & Other Cost 19,780,700
TOTAL 118,684,200
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6.2.1 Economic Assessment
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Logwood Demand Zone (H-3)
6.2.2 System Description
The Logwood Water Supply System is the major system in Hanover. It is supplied by the
Logwood Water Treatment Plant that has an installed capacity of 7.5 mgd. This plant is
operating below capacity due to certain operational challenges and the state of some
elements of this plant as outlined below.
6.2.3 Service Area
The communities that are now served by the Logwood Supply System include:
First Hill, Bachelors, St. Simon, Bloody Bay, Logwood, Sheffield, Negril West End,
March Town, Cave Valley, Santoy, Orange Bay, Green Island, Salt Spring, Lucea,
Esher, Elgin Town, Malcolm Heights, Haughton Court, Claudwell, Ginger Hill, Pell
River, First Hill, Prospect, Friendship, Rhodes Hall, Lances Bay, Bull Bay, Nonperiel,
Red Ground, Good Hope, Mt Airy, Retreat, Orange Hill, Retirement, Brighton, Spring
Gardens, Silver Spring, Archwell, Green River
6.2.4 Water Requirement
The current population in the DC in Hanover that is served by the system is estimated
to be 57,285 persons and this is expected to increase to 68,527 persons by 2030. There is
an existing deficit of 1.0 mgd and it is projected that this will marginally increase to 1.8
mgd by 2030 if the supply conditions remain as they are today .
6.2.5 Addressing the Supply Deficiencies
Some of the issues now being experienced in the Logwood water supply system
include:
• Reduction in flow through the intake to the Logwood plant by up to 20% during
periods of drought
• There is need to provide the additional two raw water pumps for which
provision was made
• The treatment plant is not capable of producing water at its designed 7.5mgd
capacity because only three of eight pumps at clear water well are operational.
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• Sections on the distribution to Lucea and Negril experience excessively high
pressures and there are losses primarily from the aged asbestos cement and cast
iron type distribution network.
The planned works are presented below.
Treatment Plant and Intake Works Rehabilitation
• Rehabilitation of Intake Works
• Rehabilitation of Logwood Treatment Plant pumping capacity to maximise
production
• Supply of Spare parts and materials to sustain production efficiency capacity
and Preventative maintenance
• Power factor correction at Logwood WTP.
Rehabilitation and expansion of Reservoir
• Rehabilitation and reinstatement of Fish River storage Tank
• Rehabilitation of Malcolm Heights storage Tank to be supplied from Logwood
Water Supply Enhancement
• Brighton Water Supply - Interconnection of the Non Pariel pump station from
the 18 inch diameter pipeline from the Logwood Treatment plant, install
pipeline and pumps to deliver water to Brighton and environs from Nonpariel.
Install 3 km of 150mm pipes, Procure & install a 100,000 gallon water storage
tank and construct a booster station.
• Interconnection from the 18" (coming from Logwood, reaching the Highway) at
the taxi stop in the highway towards Savanna, near to Negril Spots, with the 8"
pipeline that was started four years ago. Interconnection should be provided
with a PRV because the pressure is about 15 bar from the main.
• Basic Telemetry system connecting Red Ground with Logwood WTP. The
system shall be able to show 5 different levels of the reservoir to the operator in
order to decide when to stop 2 pumps and keep running one for network
balanced operation.
• At Negril area, to interconnect and install a 150mm pipeline from the 18" main at
Sweet Spice restaurant with meter and PRV supplying White Hall and the road
towards Orange Hill. This will involve the use of the Redground and Westland
water storage tanks.
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• Extension of 4.5 km of new 100mm pipe from Keep Left in Lucea to Dry Hill
• Extension 30 km of 500mm from Point to Logwood.
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General Non-Revenue Water Reduction NRW
• Active leak detection and Repair of detected leaks
• Creation of new flow/pressure zones and installation of gate valves, check
valves, flow control valves, pressure sustaining valves, control mate, air valves
throughout distribution
• Detailed micro DMA investigation (technical/commercial)
• Reconfigure sections of the distribution system
• Controls for all pumps within the distribution with pressure switch, timer, surge
vessel to reduce energy and water loss
• House to house service connection investigation, replacement, repairing leaks on
service connection and Consumer to Customer conversion
• Metering and Geo referencing of all customers. Macro and micro metering,
sizing, maintenance and replacement
• CS Analysis
• Updating Hydraulic Model to further simulate the distribution
• Installation of SCADA (Supervisory control and data acquisition) system to
monitor Flow, pressure, water quality and level in real time
Rehabilitation and Reinforcement of Small, Medium and Large Diameter Pipe Network
• Replacement of 16 km of Pipe 12’’ CI & AC with 250mm From Orange Bay PRV
to Negril PRV
• Replacement of 21 km of Pipe 12’’ AC with 300mm From Orange Bay PRV to
Bulls Bay
• Replacement of 2.3 km of Pipe 12’’ AC with 300mm From Rusea’s boundary
valve to Malcolm Heights Tank and interconnect with to 250mm PVC at keep
left in Lucea.
• (Prospect): 2.3 km of Replacement of the 6" AC line that runs from the highway
towards Prospect and Kendall
• Replace 7 km of 4” GI with 150mm pipe from Summerset road to Westend road.
• Replacement of 21 km of Pipe 12’’ AC with 300mm From Orange Bay PRV to
Bulls Bay
• Replacement of 4 km of Pipe 12’’ AC with 300mm From Keep Left to Lucea PRV
at Molasses Tank
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• Replacement and upgrading of 0.6 km of Pipe 3’’ GI with 100mm From
Cambleton to March Town intersection
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Low Income Settlement Environmental Improvement
• Reduction Water consumed or wasted at low income settlements to reduce the
high NRW ratio
• Improve service by giving one connection per property with meter.
• Abatement of Illegal Connections and conversion to active accounts
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6.2.6 Cost for Improvements
The estimated total cost for the improvement works is $3,781.2.7M as shown below.
Activity Qnty Cost ($)
A. Treatment Plant and Intake Works and
Storage Tank Rehabilitation
Rehabilitation of the Logwood WTP to
restore facility to produce at its design level. 300,000,000
Expansion of the water storage tank at Fish
River and Malcolm Heights. 100,000,000
Sub-Total A
400,000,000
B. Water Supply Enhancement
Install 3 km of 150mm pipeline from
Non Pariel to Brighton 3,000 37,620,000
Other pipeline installation to improve
service to Non-Pariel 6,000 75,240,000
Construct 100K water storage tank
14,000,000
Construct & equip booster station
20,000,000
Install 4.5 km of new 150mm pipe from
Keep Left in Lucea to Dry Hill 4,500 56,430,000
Install 150 mm pipeline from the Negril
Highway at "taxi stop" to Savanna 6,000 75,240,000
Provision for pipeline replacement
15,000 188,100,000
Install a 150mm pipeline from the 18" main
at Sweet Spice restaurant to White Hall and
the road towards Orange Hill
6,000 75,240,000
Extension 30 km of 500mm from Point to
Logwood 30,000 475,800,000
Telemetry System
Sub-Total B
20,000,000
1,037,670,000
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C. General Non-Revenue Water Reduction
NRW activities
New flow/pressure zones and installation of
gate valves, pressure sustaining valves, air
valves, etc. throughout distribution.
100,000,000
DMA investigation (technical/commercial)
and reconfiguration of sections of the water
distribution system.
150,000,000
Other NRW reduction activities 50,000,000
Sub-Total C 300,000,000
D. Pipeline Replacement
Replacement of 50 km of pipeline with
300mm diameter pipeline
Replacement of 10 km of pipeline with
150mm pipeline
Replacement of 10 km pipeline with 100
mm pipeline
50,000 1,146,500,000
10,000 125,400,000
10,000 121,400,000
Sub-Total D 1,393,300,000
E. Low Income Settlement Environmental
Improvement
Miscellaneous activities to address NRW in
informal settlements
20,000,000
Sub-Total E 20,000,000
Sub-Total A to E 3,150,970,000
Engineering & Other Cost 630,194,000
TOTAL 3,781,164,000
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6.3 New Milns Demand Zone (H-1)
6.3.1 System Description
The New Milns Water Supply System obtains water from a spring source and provides
an average of 106,400 gallons per day of water.
6.3.2 Service Area
The communities that are now served by the New Milns Supply System include New
Milns, Haddington, Welcome, Top Hill, Cacoon, Temple and Black Gate
6.3.3 Water Requirement
The current population in the DC in Hanover that is served by the New Milns system is
estimated to be 6,550 persons and this is expected to increase to 7,835 persons by 2030.
There is an estimated supply deficit of 0.39 mgd when the water requirement is
compared with the available production. This deficit is expected to increase to 0.48 mgd
by 2030 if the supply conditions remain as they are today .
6.3.4 Addressing the Supply Deficiencies
The water supply infrastructure for the New Milns system is old and leaky, resulting in
a significantly reduced level of service to customers that are supplied by this system.
Also inter-connecting from the Black Gate 100mm gravity pipe supplied from the Great
River Treatment Plant will help address the deficit.
Rehabilitation of Water Storage Tank (0.03B)
Rehabilitation/extension of Welcome storage capacity (existing tank need roof)
Water Supply Enhancement (0.06B)
Water supply from New Milns will be augmented by supply from the Woodland
system to reduce the supply deficit. It will be taken at Black Gate and connected to the
welcome water storage tank, via a new 4 km of 150mm pipeline that will be constructed.
.
General NRW Reduction activities
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An active leak detection campaign and repair of identified leaks will be undertaken.
There will also be the establishment of appropriate flow/pressure zones and installation
of gate valves, check valves, flow control valves, pressure sustaining valves, control
mate, air valves throughout distribution
Pipeline Replacement
It is planned to replace about 1 km of the leaking 4 inch diameter galvanized iron
pipeline from the New Milns Pump Station with 150 mm of PVC. In addition, provision
has been made to replace other sections of the water supply network..
Low Income Farming Settlement Environmental Improvement (0.008B)
Reduction Water consumed or wasted at low income settlements to reduce the high NRW ratio
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6.3.1 Cost for Improvements
The estimated total cost for the improvement works is $106.8M as shown below
Activity Qnty Cost ($)
Rehabiliation of water storage tank 10,000,000
Install 4 km of 150 mm pipeline from Black Gate to
the Welcome tank 4,000 38,980,000
General NRW Reduction Activities 10,000,000
Replace GI pipeline from New Milns pump station
with 100mm PVC 1,000 10,005,000
Provision for replacement of distribution network 2,000 20,010,000
Sub-Total 88,995,000
Engineering & Other Cost 17,799,000
TOTAL
106,794,000
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6.4 Shettlewood Demand Zone (H-1)
6.4.1 System Description
The Shettlewood Water Supply System provides just under 80,000 gallons of water per
day.
6.4.2 Service Area
The communities that are now served by the Shettlewood Water Supply System include:
Chester Castle, Ramble, Knockalva, Copse, Pearces Village, Shettlewood, Friendship,
Lethe, Eden, Burnt Ground, Ramble, Mt. Peto, Bessie Baker, Forrest, Mount Peto and
Haddo
6.4.3 Water Requirement
The current population in the DC in Hanover that is served by the Shettlewood system
is estimated to be 14,096 persons and this is expected to increase to 16, 862 persons by
2030. There is an existing supply deficit of 0.92 mgd and it is projected that this will
increase to 1.1 mgd by 2030 if the supply conditions remain as they are today .
6.4.4 Addressing the Supply Deficiencies
The raw water inlet valves are in very poor condition and will be replaced.
Sections on the distribution experience excessively high pressures causing frequent
main breaks and leaks.
Treatment Plant and Intake Works Rehabilitation (0.07B)
• Redesign and rehabilitation of Intake Works
• Rehabilitation of Treatment Plant and to maximise production capacity
• Supply of Spare parts and materials to sustain production efficiency capacity and Preventative
maintenance
Rehabilitation and Installation of Reservoir (0.09B)
• Rehabilitation of Friendship Tank storage capacity
• Installation of New Tank at Chester Castle, Copse and Macfield
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Water Supply Enhancement (0.16B)
• Lay 6 km new 150mm transmission pipe from Shettlewood to Mt Carey pumping Station, expansion of
storage capacity and pumping station upgrade.
General NRW Activities
o Creation of new flow/pressure zones and installation of gate valves, check valves, flow control
valves, pressure sustaining valves, control mate, air valves throughout distribution
o Detailed micro DMA investigation (technical/commercial)
o Reconfigure sections of the distribution system
o Controls for all pumps within the distribution with pressure switch, timer, surge vessel to reduce
energy and water loss
o House to house service connection investigation, replacement, repairing leaks on service
connection and Consumer to Customer conversion
Rehabilitation and Reinforcement of Small, Medium and Large Diameter Pipe Network
Replacement of 1’’ GI pipeline with 150mm to 100m from Axe and Daze to Chigwell
Low Income Settlement Environmental Improvement (0.01)
• Low Income settlement (Red area) water supply and billing improvement.
• Reduction Water consumed or wasted at low income settlements to reduce the high NRW ratio
• Improve service by giving one connection per property with meter.
• Abatement of Illegal Connections and conversion to active accounts
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6.4.1 Cost for Improvements
The estimated total cost for the improvement works is $473.1M as shown below
Activity Qnty Cost ($)
Rehabilitation and upgrade of treatment plant to
increase Production.
120,000,000
Rehabilitation and Installation of Reservoir 90,000,000
Install 6 km new 150mm transmission pipeline
from Shettlewood to Mt Carey pumping Station 6,000
75,240,000
Expansion of storage capacity and pumping
station upgrade. 30,000,000
Provision for replacement of distribution mains in
supply area 4,000 38,980,000
General NRW Activities 40,000,000
Sub-Total 394,220,000
Engineering & Other Cost 78,844,000
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TOTAL
473,064,000
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