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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

20 October 2008 Information Letter 11/2008 - The 2009 Periodic Review of Prices - Further Guidance on Drinking Water Quality Requirements
6 October 2008 Information Letter 10/2008 - Publication of the latest version of the Guidance on the Water Supply (Water Quality) Regulations 2000 (England) and 2001(Wales) incorporating the 2007 amendment regulations.
29 September 2008 Job vacancies within DWI. Closing date 24 October 2008.

 Consumer Information - About DWI

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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
29 September 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.