Southern Water Services Limited – Cooks Castle Shanklin Service Reservoir
Notice under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended)
Reference: SRN-2022-00004
Version Number: 2
Water undertaker as appointed under section 6 of the Water Industry Act 1991 (as amended): Southern Water Services Limited, with registered number 02366670 (hereinafter called ‘the Company’).
Assets Affected:
- RI014 Cooks Castle Shanklin WSR
Details of this Notice:
- The Drinking Water Inspectorate (‘the Inspectorate’) has received a regulation 28(1) report of the Water Supply (Water Quality) Regulations 2016 (as amended) (‘the Regulations’) from the Company dated 31 January 2022, which states that there is or has been a significant risk of supplying water from Cooks Castle Shanklin WSR (and associated assets as applicable) that could constitute a potential danger to human health or could be unwholesome.
- Consequently, this Notice is served on the Company by the Inspectorate on behalf of the Secretary of State, under regulation 28(4) for the assets listed above, for risks associated with:
|
Description of Risk |
Hazard/ Hazardous Event/ Parameter |
Hazard I D |
|---|---|---|
|
Structural integrity of asset at risk |
No Supply |
33119/ 33120/ 33121 |
|
Microbiological contamination due to ingress |
Total Coliforms |
33063 |
|
Microbiological contamination due to ingress |
Clostridium Perfringens |
33061 |
|
Microbiological contamination due to ingress |
E coli |
33064 |
- The Company are required to satisfy the following requirements.
The date given is that until or by which the requirements must be maintained or satisfied, as appropriate.
Requirements:
(a) To maintain the following measures for the period specified in each case:
- Operation of Cooks Castle Shanklin WSR in accordance with Company policy, procedures and to internally agreed process parameters.
Date: Ongoing for the duration of this Notice - Ongoing monitoring of regulatory and operational sample results and online data.
Date: Ongoing for the duration of this Notice - Enhanced large volume sampling and enhanced data assessment at frequency set out in audit strategy.
Date: Ongoing for the duration of this Notice - Weekly site security and inspection visits.
Date: Ongoing for the duration of this Notice - Quarterly visits to complete Water Supply Checklist Inspection.
Date: Ongoing for the duration of this Notice - Monitor and track trends for customer contacts in downstream water supply zones.
Date: Ongoing for the duration of this Notice - Investigate any reports of illness contacts in downstream water supply zones.
Date: Ongoing for the duration of this Notice - Proactive management of Cooks Castle Shanklin WSR and network to minimise risk of ingress.
Date: Ongoing for the duration of this Notice - Continue ground movement and ground water monitoring.
Date: Ongoing for the duration of this Notice - Carry out Remote Operated Vehicle (ROV) surveys at frequency set out in audit strategy
Date: Ongoing for the duration of this Notice
(b) To review, revise or make operational the following measures, by the dates specified in each case:
- Confirm the contingency plan to remove Cooks Castle WSR from supply in the event of an emergency. Plan to include definition of emergency.
Date: Complete - Following completion of remedial works at Carisbrooke WSW, confirm the short-term plan to remove Cooks Castle WSR from supply for inspection and clean.
Date: Complete - Complete the internal inspection, flood test and clean of Cooks Castle WSR
Date: Complete - Confirm the scope of remedial works where necessary and as required to bring Cooks Castle WSR back into supply or confirm that Cooks Castle WSR will remain out of supply.
Date: Complete - Confirm the scope of the proposed medium-term improvement works following the inspection of Cooks Castle WSR to maintain resilient supplies to customers supplied from Cooks Castle WSR and timescales for delivery.
Date: Complete - Deliver, commission, and have benefit of use from the scope of works identified in (b)5, where works were required.
Date: 31 December 2024 - Confirm the scope of the proposed long-term works, including the location of any land purchases required and timescales for delivery of the solution to permanently remove Cooks Castle WSR from supply.
Date: 31 October 2024 - Confirm the delivery and realisation of benefit of use from the long-term permanent solution to replace Cooks Castle WSR as outlined in (b)7.
Date: 28 February 2028 - Confirm handover of the new assets in accordance with Southern Water’s commissioning process.
Date: 31 July 2028
(c) To audit whether the measures have been effective by the following means:
- Define an audit strategy to monitor the effectiveness of the measures specified in sections (a) and (b).
Date: Complete - Implement, and keep under continuous review, the audit strategy defined in measure (c)1.
Date: Following completion of measure (c)1. onwards.
(d) Not to supply water for regulation 4(1) purposes from Cooks Castle Shanklin WSR, or not to so supply unless the specified conditions below are satisfied:
- Not Applicable
(e) To provide the following information in the time and manner specified below to enable monitoring of progress towards the mitigation of the risks:
- Provide a progress report annually.
Date: by 31 January each year. - Submit a report confirming the plan to remove Cooks Castle WSR from supply in the event of an emergency. Plan to include definition of emergency.
Date: Complete - Submit a report confirming the short-term plan to remove Cooks Castle WSR from supply for inspection and clean.
Date: Complete - Submit a report confirming internal inspection, flood test and clean of Cooks Castle WSR has taken place and provide inspection report.
Date: Complete - Submit a report confirming the scope of remedial works where necessary as required to bring Cooks Castle WSR back into supply or confirm that Cooks Castle will remain out of supply.
Date: Complete - Submit a report confirming the scope of the proposed medium term works and timescales for delivery as detailed by (b)5.
Date: Complete - Submit a report confirming the completion, commission, and delivery of benefit of use realisation of the scope of works identified in (b)5.
Date: 31 January 2025 - Submit a report confirming the scope of the proposed long-term works, including the location of any land purchases required and timescales for delivery of the solution to permanently remove Cooks Castle WSR from supply, as detailed in (b)7.
Date: 30 November 2024 - Submit a report confirming delivery and realisation of benefit of use from the long-term permanent solution to replace Cooks Castle WSR as outlined in (b)7.
Date: 31 March 2028 - Submit a report confirming handover of the new assets in accordance with Southern Water’s commissioning process.
Date: 31 August 2028 - Submit the audit strategy for auditing the effectiveness of the measures, as specified in measure (c)1.
Date: Complete - Submit any revisions of the audit strategy produced under measure (c)2.
Date: Within 1 month of a revision - Submit a report in the event that any completed measures of this Notice need to be altered in any way, for any reason.
Date: Ongoing for the duration of this Notice - Submit a satisfactory completion report accompanied by a revised regulation 28(1) report with Board level Director sign-off.
Date: 31 August 2029
Further Details of this Notice:
- Any product or substance used as a result of the requirements in this Notice must comply with regulation 31.
- Under regulation 28(6) the Inspectorate, on behalf of the Secretary of State, may by notice served on the Company, revoke or vary this Notice.
- Failure by the Company to comply with this Notice may result in enforcement proceedings under section 18 of the Water Industry Act 1991 (as amended).
Signed
Nick Adjei
Deputy Chief Inspector, on behalf of the Secretary of State for Environment, Food and Rural Affairs
18 December 2023
Reference: SRN-2022-00004 v2