Drinking Water Inspectorate Guidance Document

1 Guidance ON THE IMPLEMENTATION OF THE Water SUPPLY ( Water QUALITY) REGULATIONS 2016 IN ENGLAND Document CONTROL The only controlled version of this Document can be accessed on the DWI Website . Printed copies of this Document , together with electronic copies held on local computers and other storage devices are uncontrolled. DRAFT FOR CONSULTATION APRIL 2016 Drinking Water Inspectorate Guidance Document UNCONTROLLED IF PRINTED Issue date: XXXX 2016 DRAFT VERSION 5 Page 1 of 68 Errors and corrections: Please email us if you find any errors or if corrections are needed Email: DWI CONTACT DETAILS Area 7e, 9 Millbank c/o Nobel House, 17 Smith Square London SW1P 3JR Tel +44 (0)300 068 6400.

2 E-mail : APRIL 2016: DRAFT FOR CONSULTATION UNCONTROLLED IF PRINTED Issue date: XXXX 2016 DRAFT VERSION 5 Page 2 of 68 Contents SECTION A - INTRODUCTION .. 5 A1. Purpose of this Document .. 5 A2. The regulatory framework in England .. 6 A3. Summary of the principal changes to the Water Supply ( Water Quality) Regulations introduced by the 2016 Regulations .. 8 SECTION B - THE 2016 REGULATIONS .. 9 PART 1 - 9 B1. Regulation 1 - Citation, commencement and application .. 9 B2. Regulation 2 - Interpretation.

3 9 PART 2 - Water SUPPLY ZONES .. 10 B3. Regulation 3 - Delineation and designation of Water supply zones .. 10 PART 3 WHOLESOMENESS .. 12 B4. Regulation 4 Wholesomeness .. 12 PART 4 MONITORING OF Water SUPPLIES .. 13 B5. Regulation 5 Interpretation and Application of Part 4 .. 13 B6. Regulation 6 Monitoring: general provisions .. 14 B7. Regulation 7 Sampling points .. 21 B8. Regulation 8 Authorisation of supply points .. 21 B9. Regulation 9 Numbers of samples .. 23 B10. Regulation 10 Sampling: further provisions.

4 25 PART 5 MONITORING ADDITIONAL 25 B11/12. Regulations 11 and 12 Interpretation of Part 5 & Sampling for particular substances and parameters .. 25 B13. Regulation 13 - Sampling at treatment works .. 25 B14. Regulation 14 Sampling at service reservoirs .. 26 B15. Regulation 15 Sampling: new sources .. 27 B16. Regulation 16 Collection and analysis of samples .. 28 PART 6 Drinking Water PROTECTED AREAS .. 30 B17. Regulation 17 Drinking Water abstraction points: monitoring sites .. 30 PART 7 INVESTIGATIONS, AUTHORISATION OF DEPARTURES & REMEDIAL ACTION.

5 32 B18. Regulation 18 Investigations: Schedule 1 32 B19. Regulation 19 Investigations: indicator parameters .. 35 B20. Regulation 20, 22, 23, 24, 25 Action by the Secretary of State - Authorisations .. 37 B21. Regulation 21 Failure attributable to domestic distribution system where Water is supplied to the public .. 38 PART 8 Water TREATMENT .. 40 B26. Regulation 26 Disinfection and other treatment arrangements .. 40 B27. Regulation 27 Risk assessment .. 42 UNCONTROLLED IF PRINTED Issue date: XXXX 2016 DRAFT VERSION 5 Page 3 of 68 B28.

6 Regulation 28 Procedure following risk assessment and prohibition of supply .. 43 B29. Regulation 29 Water treatment to minimise contamination from pipes .. 44 B30. Regulation 30 Replacement of lead pipes .. 44 B31. Regulation 31 Application and introduction of substances and products .. 44 B32. Regulation 32 Use of processes .. 45 B33. Regulation 33 Offences .. 46 PART 9 RECORDS AND 46 B34. Regulation 34 Maintenance of records .. 46 B35. Regulation 35 Provision of information .. 47 PART 11 ENFORCEMENT.

7 48 B38. Regulation 38 - Contraventions by relevant suppliers .. 48 APPENDIX 1: REGULATION 16 ANALYSIS OF SAMPLES .. 49 APPENDIX 2: RADIOACTIVITY SAMPLING AND ANALYSIS .. 62 UNCONTROLLED IF PRINTED Issue date: XXXX 2016 DRAFT VERSION 5 Page 4 of 68 SECTION A - INTRODUCTION A1. Purpose of this Document This Document provides Guidance on the implementation of: the Water Supply ( Water Quality) Regulations 2016 ( 2000/xxxx) which apply to Water undertakers1 and combined licensees whose areas of supply are wholly or mainly in England.

8 The Inspectorate publishes a parallel Guidance Document relating to the Water Supply ( Water Quality) Regulations 2016 ( XXXX ( )) which apply to Water undertakers and combined licensees whose areas of supply are wholly or mainly in Wales. In line with common practice, Water undertakers, inset appointees and combined licensees are referred to as Water companies throughout this Guidance Document , and the requirements apply to all, unless stated otherwise. The Drinking Water Inspectorate (DWI) exercises the powers and duties of the Secretary of State for Environment, Food and Rural Affairs in England, therefore references to DWI or the Inspectorate in this Document mean on behalf of the Secretary of State.

9 This Guidance Document replaces previous versions of the Guidance on the 2000 regulations and amendments. It does not purport to offer an authoritative interpretation of the Regulations. We recognise that it may contain omissions and that some of the advice contained may need to be modified or updated in light of experience gained with implementing the Regulations or as and when further Guidance on interpretation of the Drinking Water Directive is published by the European Commission.

10 From time to time the Inspectorate issues updated Guidance to companies through publication of Information Letters and Guidance notes, therefore Water companies should always check the DWI website for Information Letters and other Guidance issued after this Guidance Document . This Guidance is consistent with advice issued by DWI Information Letters up to and including 01/2016. For the purposes of consulting with Water companies, this draft Guidance is in the form of one Document covering all of the Regulations.