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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 2008
The DWI 19th Annual Report

Published 2 July 2009


Whats New

16 March 2010 Job Advert for Inspector Posts (PDF 20KB). Closing date: 30 April 2010.
2 March 2010 Information Letter 02/2010 (PDF 49KB) - Revision of Guidance on the regulatory responsibilities of new (inset) appointees in relation to public water supplies. (Inset Guidance PDF 286KB)
24 February 2010

North East London taste and odour incident


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Drinking Water Inspectorate

55 Whitehall, London, SW1A 2EY
Telephone : 0300 068 6400
dwi.enquiries@defra.gsi.gov.uk


Department for Environment,
Food & Rural Affairs (DEFRA)

Llywodraeth Cynulliad Cymru/ Welsh Assembly Government


Website last updated
16 March 2010

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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.