Our Ref: DWI/2/10 Event 30/10 Date: 9 June ... - Derry City Council

Annex 2
DWI FINAL ASSESSMENT SUMMARY - ADVERSE WEATHER INCIDENT AFFECTING SUPPLIES ACROSS NORTHERN
IRELAND, 27 DECEMBER 2010 – 6 JANUARY 2011
DWI Requirement/ Recommendation
in Initial Assessment Letter of
4 March 2011
Summary of NI Water
Response received
1 April 2011
DWI Assessment of
NI Water Response
Further Action Required
Regulation 6 Monitoring: General
Provisions
4.3.2 NI Water’s record keeping
regarding the deployment of each
tanker and static tank were insufficient
to demonstrate compliance with
Regulation 6, and DWI recommended
NI Water reviewed its record keeping.
NI Water will review its
record keeping
procedures to ensure a
complete record of tankers
and static tanks exists.
DWI notes that a review is
being undertaken.
NI Water to provide details of
the review being carried out
within 4 weeks of the date of
this letter.
Action status: ongoing
4.3.3 DWI recommended where rezoning
is being planned, an operational
sampling plan is considered.
NI Water will consider
increased monitoring in
the distribution system
during major boundary
change operations
through a risk based
approach.
DWI notes that NI Water
will use a risk-based
approach to operational
sampling when re-zoning
occurs.
In any future event, NI Water
must ensure that adequate
operational sampling is
carried out.
Action status: no further
action required
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