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The Drinking Water Inspectorate (DWI) regulates public water supplies in England and Wales.

DWI is responsible for assessing the quality of drinking water in England and Wales, taking enforcement action if standards are not being met, and appropriate action when water is unfit for human consumption.

Drinking Water 2007
The DWI 18th Annual Report

Published 26th June 2008


Whats New

26 June 2008 Annual Drinking Water Report 2007 available online
20 June 2008 Information Letter 06/2008   - Audit of Regulation 35(1)
19 May 2008 Press Release - Three Valley pleads guilty to supply water unfit for human consumption

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Drinking Water Inspectorate

55 Whitehall, London, SW1A 2EY
Telephone : 020 7270 3370


Department for Environment,
Food & Rural Affairs (DEFRA)

The National Assembly for Wales /
Cynulliad Cenedlaethol Cymru


Website last updated
08 July 2008

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DWI strives to ensure that the information on this website is set out in an accessible and understandable manner.
We welcome any comments about our website, including suggestions for additional topics that might be useful to our customers.