Table of contents

• Drinking Water 2025 – Summary of the Chief Inspector’s report for drinking water in Wales
• Foreword
• Introduction
• Water supplies and testing
• Compliance with standards
• Learning from compliance failures
• Learning from events
• Consumer contacts
• Asset health
• Water safety planning and risk assessment
• Poly and perfluoroalkyl substances (PFAS)
• Audit programme
• Recommendations
• Enforcement
• Security and Emergency Measures Direction - SEMD
• Network and Information Systems - NIS
• Materials in contact with drinking water (Regulation 31)
• Research publications
• Whistleblowers
• Working with stakeholders

Introduction

Drinking Water 2025 is the annual publication of the Chief Inspector of Drinking Water for England and Wales. It is the 36^th report of the work of the Inspectorate and presents the summary information about drinking water quality for the calendar year of 2025. It is published as an interim report and a final summary report, which covers public water supplies, and a single report, which covers private water supplies. This report is the summary of public water supplies for Wales. The industry dashboards for Wales 2025 are shown in summary below:

Figure 1 – Wales compliance dashboard