October 29, 2026 - 365 views
Water companies in Wales are making progress in some areas but continue to face concerns over pollution, according to a new report bringing together evidence from four regulators across England and Wales.
The first Water Industry Performance Insights report combines data from Natural Resources Wales, the Environment Agency, Ofwat and the Drinking Water Inspectorate, providing a wider picture of the industry's performance and the challenges facing the sector.
In Wales, Hafren Dyfrdwy recorded no serious pollution incidents, while Dŵr Cymru Welsh Water improved its storm overflow monitoring but saw a worrying increase in serious pollution incidents.
The findings come as water quality remains a major environmental concern for communities across North Wales, where rivers, beaches and coastal waters are important for wildlife, tourism and recreation.
Across England and Wales, the report recorded 2,991 pollution incidents during 2025, including 84 classed as serious. Water companies also failed to complete 142 of 2,254 planned environmental improvement actions by their deadlines.
There were some positive findings. Drinking water quality remained high, with 99.97 per cent of tests meeting required standards. Internal sewer flooding in homes and businesses has also fallen by 43 per cent in recent years.
However, regulators say more needs to be done to reduce pollution, tackle leakage and ensure reliable water supplies, particularly as pressure on water resources grows.
The report marks the first time the four regulators have brought their evidence together in a single assessment. They say the approach should improve transparency and make it easier to hold individual companies to account.
Natural Resources Wales chief executive Ceri Davies said improving water quality was one of the most significant environmental challenges facing the country. She said the report provided a clearer picture of company performance, but added that further improvements were needed to benefit people, nature and the resilience of the water environment.
Water companies have committed more than £104 billion in investment between 2025 and 2030 to upgrade water and sewage networks across England and Wales. Regulators say they will scrutinise how that money is spent and use enforcement powers, including fines where appropriate, when companies fail to meet required standards.
The report therefore presents a mixed picture for Wales and the wider industry: drinking water remains of a high standard, but concerns over sewage pollution and environmental performance continue to put pressure on water companies to deliver lasting improvements.
