A report by the Chief Inspector of drinking water

The Drinking Water Inspectorate annual report Drinking Water 2021 provides an overview of the quality of public and private water supplies in England and Wales. It comprises of the following:

Chief Inspector’s Letter to Ministers (England and Wales)

The letters from the Chief Inspector to the Ministers in England and Wales contain a high level overview of findings for the year.

Letter to Minister – Wales

Public water supplies

Annual Summary Reports

The reports cover England and Wales and summarise the testing and results of water quality tests, events and technical audit activity.

Quarterly Reports Published

Quarter 1

Quarter 2

Quarter 3

Presentation Slides

Presentation Recordings

Private Water Supplies

Presented as separate reports for England and Wales and publishing numbers and types of supplies, a summary of monitoring results and case studies.



Wales – Welsh Translation

Company performance data

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