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Southern Water Services Limited – Perry Hill WSR

Notice under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended)

Reference: SRN-2022-00013

Version Number: 1

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:

Asset Name

Reference

Perry Hill WSR

RS064

Sussex West Supply System

Y009

Table 1: List of assets affected and associated reference numbers

Details of this Notice:

  1. 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 9 August 2022, which states that there is or has been a significant risk of supplying water from Perry Hill WSR (and associated assets as applicable) that could constitute a potential danger to human health or could be unwholesome.
  2. 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

Microbiological contamination due to ingress

Total Coliforms

48749

Microbiological contamination due to ingress

E. coli

48750

Structural integrity of asset at risk

No Supply

48807

Table 2: Table of the hazards, hazardous events, and/or parameters covered by this Notice, including the Hazard I D numbers and the description of risks.
  1. 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:

  1. Operation of Perry Hill WSR in accordance with Company policy, procedures and to internally agreed process parameters.
    Date: Ongoing for the duration of this Notice
  2. Ongoing monitoring of regulatory and operational sample results and online data.
    Date: Ongoing for the duration of this Notice
  3. Enhanced large volume sampling and enhanced data assessment at frequency set out in audit strategy.
    Date: Ongoing for the duration of this Notice
  4. Weekly site security and inspection visits.
    Date: Ongoing for the duration of this Notice
  5. Quarterly visits to complete Water Supply Checklist Inspection.
    Date: Ongoing for the duration of this Notice
  6. Monitor and track trends for customer contacts in downstream water supply zones.
    Date: Ongoing for the duration of this Notice
  7. Investigate any reports of illness contacts in downstream water supply zones.
    Date: Ongoing for the duration of this Notice
  8. 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:

  1. Develop the contingency plan to remove Perry Hill WSR from supply in the event of an emergency.
    Date: Complete
  2. Confirm location and outline design of the proposed asset the Company has chosen to build.
    Date: 30 June 2023
  3. Confirm the programme of works for the proposed site to include:
  • Construction
  • Commissioning
  • Asset Integration
  • Staff training measure
    Date: 30 June 2023
  1. Complete the detailed design of the proposed asset the Company has chosen to build.
    Date: 30 November 2023
  2. Complete required planning work, seek and obtain required permissions.
    Date: 30 November 2025
  3. Complete following actions:
  • Construction of the proposed asset
  • Commissioning
  • Asset Integration
  • Staff Training
  • Supply water from the new Water Service Reservoir.
    Date: 31 July 2028

(c) To audit whether the measures have been effective by the following means:

  1. Define an audit strategy to monitor the effectiveness of the measures specified in sections (a) and (b).
    Date: 31 March 2023
  2. 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 Perry Hill WSR, or not to so supply unless the specified conditions below are satisfied:

  1. 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:

  1. Provide a progress report annually.
    Date: by 31 January each year.
  2. Submit the contingency plan to remove Perry Hill WSR from supply in the event of an emergency.
    Date: Complete
  3. Submit location and outline design.
    Date: 31 July 2023
  4. Submit the programme of works to include Construction, Commissioning, Asset Integration and Staff training.
    Date: 31 July 2023
  5. Submit the detailed design.
    Date: 31 December 2023
  6. Confirm the required planning work and permissions have been obtained.
    Date: 31 December 2025
  7. Submit evidence of work below has been completed:
  • Construction of asset
  • Commissioning
  • Asset Integration
  • Staff Training
  • Supply water from the new Water Service Reservoir.
    Date: 31 August 2028
  1. Submit the audit strategy for auditing the effectiveness of the measures, as specified in measure (c)1.
    Date: 30 April 2023
  2. Submit any revisions of the audit strategy produced under measure (c)2.
    Date: Within 1 month of a revision
  3. 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
  4. 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:

  1. Any product or substance used as a result of the requirements in this Notice must comply with regulation 31.
  2. 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.
  3. 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

Nicholas Adjei
Deputy Chief Inspector, on behalf of the Secretary of State for Environment, Food and Rural Affairs
01 March 2023
Reference: SRN-2022-00013 V1

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