- 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
Whistleblowers
Ten disclosures were made to the Inspectorate during the reporting period 1 April 2025 to 31 March 2026. Of these, nine required further investigation by the Inspectorate. Further action was taken in response to five disclosures following investigation, including the issuing of recommendations relating to company processes, policies and procedures.
To help foster an open and supportive culture, the Inspectorate encourages companies to introduce reporting routes for water quality and network information systems concerns, similar to arrangements some companies have in place for health and safety concerns, and to maintain a formal whistleblowing policy.