Welcome to DWI

The Drinking Water Inspectorate (DWI) was formed in 1990 to provide independent reassurance that water supplies in England and Wales are safe and drinking water quality is acceptable to consumers.


What's new?

11 July 2018

The Chief Inspector's Report for 2017 for public water supplies is published on our website.

4 July 2018

Information Letter 01/2018 (PDF 87KB) on Drinking Water Quality Legislation 2017 and 2018

19 June 2018

The Drinking Water Inspectorate has today published a consolidated review (PDF 254KB) of the widespread loss of supplies arising from the freeze/thaw events affecting England and Wales in March 2018.

5 June 2018

United Utilities fined for drinking water offences(PDF 59KB)

10 May 2018

The Network and Information System (NIS) Regulations come in to force today. For further information and guidance please our NIS Homepage.



Page last modified: 11 July 2018.
Page reviewed: 11 July 2018

Drinking Water Inspectorate