Portsmouth Water Limited – AMP8 Lead Strategy

Water Industry Act 1991 (as amended) (“the Act”): Section 19(1)(b)

Reference: PRT-2023-00009

Acceptance Notice:

The Drinking Water Inspectorate, on behalf of the Secretary of State:

  1. Is satisfied that Portsmouth Water Ltd “the Company” in supplying water from all company water supply zones which may be at risk of exceeding the standards for Lead. This means that the Company is likely to contravene its duty in respect of supplying water which meets the Regulations under Section 68(1)(a) of the Water Industry Act 1991 and meets the requirement set in regulation 4(2)(c) of the Water Supply (Water Quality) Regulations 2016 (as amended) (“the Regulations”).
  2. Has notified the Company on 8 November 2023 that the Secretary of State is considering making in relation to the company an enforcement order under Section 18 of the Act.
  3. Notes that the Company has on 5 March 2023 given a new undertaking under Section 19 (1) (b) of the Act, to take the following steps by the dates shown.

4. Steps to be taken:

  1. Ensure that the Lead parameter has been assessed as a hazard as part of the regulation 27 Risk Assessment for the supply system that includes the water supply zones listed in the Annex to this Schedule according to a Drinking Water Safety Plan approach. Ensure that regulation 28 documents are reviewed, and updates provided as necessary.
    Date: Ongoing for the duration of the undertaking
  2. Keep under review the company’s strategy for the protection of public health and for compliance with drinking water quality standards with respect to lead.
    Date: Ongoing for the duration of the undertaking
  1. A programme of lead supply pipe replacement in the highest risk priority cases in 60 in schools/nurseries within the Company’s Supply area. The replacement will be to the first tap within the institution’s building. Date: 31 March 2030
  2. Replace of the company’s lead communications pipe where an internal threshold of 5μg/l is not met.
    Date: Ongoing for the duration of the undertaking
  3. Continue to proactively replace any company-owned lead communication pipes on properties where lead is identified during the mains renewal programme.
    Date: Ongoing for the duration of the undertaking
  4. Continue to replace Portsmouth Water Lead pipework when customers replace their part of the lead service pipe when customers replace their part of lead service pipe.
    Date: Ongoing for the duration of the undertaking
  5. Continue the intensive lead sampling programme in the key water supply zones.
    Date: Ongoing for the duration of the undertaking
  6. Continue to raise customer awareness on the risk of lead via the website and direct correspondence following operational activities. Date: Ongoing for the duration of the undertaking
  7. Produce a plan to achieve lead free drinking water supplies. Date: 31 December 2027
  8. Develop and submit the company’s draft Lead reduction plans for AMP9, demonstrating the required ramp-up pipe replacement rate. Date: 31 August 2027


d. At regular intervals provide DWI with reports on progress made with carrying out the steps set out in the Action Plan. Reports to include at least the following details:

    a) All data from the monitoring of treated water in the distribution systems named in the annex.

    b) Details of the remedial steps that comprise the programme of work including commencement and completion dates for investigations, design, tendering, construction, and commissioning.

    c) Current state of progress with the steps referred to in (b) above;

    d) A statement of implications of any slippage of the programme and details of activities planned to bring programme back on target.

    e) Whether the company has any other reason to believe it may not be able to meet any of the key dates set out in this Schedule of Work.
    Date: By 31 January each year that the undertaking is in place

    e. Continue to monitor at an enhanced frequency for Lead for a period of 12 months following commissioning of any work associated with the Action Plan to demonstrate the effectiveness of the remedial measures taken.
    Date: 31 March 2031

    f. Provide a final report to DWI on the efficacy of the remedial measures taken as part of the lead strategy. Include as evidence for closure for this scheme appropriate documentation to confirm that the actions set out in this Schedule of Work have been taken and that the company’s lead strategy is in place. Date: 30 April 2031

      Further Details of this Acceptance Notice:

      1. The Secretary of State is satisfied that Portsmouth Water Limited has given and is complying with an undertaking to take all such steps as appear to the Secretary of State for the time being to be appropriate to secure or facilitate compliance with the requirement of regulation 4(2)(c) of the Water Supply (Water Quality) Regulations 2016 (as amended).

      Authorised by the Secretary of State to sign in that behalf

      Nicholas Adjei
      Deputy Chief Inspector, Drinking Water Inspectorate
      14 March 2024
      Reference: PRT-2023-00009

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