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?

7 March 2019

Drinking Water 2018 - Quarter 2 April - June 2018 has been published.

6 March 2019

DWI position paper on Drinking Water Quality in England and Wales as the UK exits from the European Union (PDF 211KB)

5 March 2019

Joint letter from UK Regulators on the Suitability of metallic materials for use in contact with drinking water (PDF 159KB)

21 February 2019

Drinking Water 2018 - Quarter 1 January - March 2018 has been published.

10 January 2019

Northumbrian Water fined for drinking water offences (PDF 295KB)

21 December 2018

Publication of Information Letter 3/2018 (PDF 127KB)"METALDEHYDE - Recent developments and actions required"

16 October 2018

Publication of the revised Guidance on the Notification of Events,



Page last modified: 7 March 2019.
Page reviewed: 7 March 2019

Drinking Water Inspectorate