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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 2006
The DWI 17th Annual Report

Published 26th June 2007


Whats New

3 April 2008 Private Water Supplies and Bottled Water briefing day - 8th July 2008 at the RIPH
17 March 2008 Press Release - Incident Assessment Letter on Mythe Water Treatment Works

 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
6 May 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.