Eight of Nine English Water Companies Fail Environmental Test

Eight of England's nine water companies scored "poor" or "requiring improvement" in a joint report published by four regulators, and Environment Secretary Angela Eagle has summoned the industry's bosses to Whitehall in response.

The sector's combined environmental performance rating fell to 16 stars out of a possible 36, down from 19 the previous year. That is the lowest score since the Environment Agency's star-rating process began.

England recorded 74 serious pollution incidents in 2025 — the category causing significant harm to the environment. That was just one fewer than the previous year, despite billions of pounds of investment, bans on executive bonuses and sustained public outrage.

What did the regulators find?

The Environment Agency published the assessment jointly with the Drinking Water Inspectorate, Natural Resources Wales and Ofwat. It is the first time the four bodies have pooled their data in a single report, a step toward consolidating fragmented regulatory oversight under one watchdog.

Overall, England logged 2,666 pollution incidents in 2025 — a 40% increase on 2016. Thames Water recorded the most incidents, followed by Anglian Water, United Utilities, Yorkshire Water and Southern Water.

Dame Angela Eagle did not soften her language. "People are sick of excuses," she said. "Water companies have let the public down time and time again, and today's report is further proof that root-and-branch reform cannot wait."

What consequences are coming?

The Department for the Environment, Food and Rural Affairs (Defra) said Eagle was preparing to take "further action", with "tougher consequences" for executives at failing companies. Defra said it would "set out a clear set of improvement actions", covering:

• tackling leakage
• reductions in pollution incidents
• improving customer satisfaction

Rules that took effect last year already block bonuses for executives at companies receiving a one-star rating.

Why does privatisation matter here?

The UK is one of only two countries in the world where water provision is fully privatised. The other is Chile, where a military dictatorship imposed privatisation in the 1980s. That comparison has moved to the centre of the debate as the industry's record has deteriorated.

Campaigners want structural change, not incremental fixes. James Wallace, chief executive of River Action, said: "This is a system that rewards shareholders and creditors while our rivers, wildlife and bill payers lose out."

Wallace called for Thames Water, the worst offender, to go into special administration immediately. "Ministers must end the failed privatisation experiment, review alternative models including public ownership, and give regulators the power to make polluters pay not the public," he said.

Can a merged regulator fix this?

The four-agency report signals a move toward a single water watchdog, but environmental groups warn that institutional reshuffling alone will not work. Richard Benwell, chief executive of Wildlife and Countryside Link, said a new regulator "must be more than a merger of existing institutions".

"It needs a clear legal duty to restore nature, strong environmental targets and the powers and resources to enforce the law across the water industry, industrial agriculture, and chemical companies," Benwell said.

How does the industry respond?

Water UK, the industry trade body, pointed to progress on other measures. "Today's report shows the lowest level of leakage in history, as well as other areas of good performance. However, the fact remains that the environmental performance of some water companies is not good enough," the body said in a statement.

Water UK also shifted part of the blame for pollution away from its members. "While more than half of all pollution incidents last year were caused by blockages or vandalism, which are not in the direct control of the water companies, there is clearly more work to do," the statement said.

The trade body closed with a forward pledge: "It will take time, but record investment will help secure water supplies, support growth and end sewage entering rivers and seas."

With a record-low star rating, a 40% rise in incidents since 2016 and the environment secretary threatening tougher consequences, the industry now faces the most serious political pressure since privatisation — and the terms of that privatisation itself are under open challenge.