A report by the Chief Inspector of drinking water

The Drinking Water Inspectorate annual report Drinking Water 2025 provides an overview of the quality of public and private water supplies in England and Wales.

Public Water Supplies

Annual Summary Reports

Letter to Minister – Wales

Presentation Slides


Interim Reports


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.

Letter to Minister – Wales


Company performance data