Select Committee · Public Accounts Committee

Water sector regulation

Status: Closed Opened: 26 Mar 2025 Closed: 22 Sep 2025 2 recommendations 28 conclusions 1 report

England and Wales’ supply of clean drinking water is managed by sixteen privately-owned companies. These companies are expecting to spend at least £272bn over the next 25 years to meet significant supply and environmental challenges faced by the sector. The Department for Environment, Food & Rural Affairs (Defra) oversees water policy, while Ofwat, the Environment …

Reports

1 report
Title HC No. Published Items Response
42nd Report - Water sector regulation HC 824 18 Jul 2025 30 Responded

Recommendations & Conclusions

30 items
2 Conclusion 42nd Report - Water sector regulation Accepted

Develop common survey standards and collate data to assess water infrastructure health for business plans

Over many years, the Environment Agency and Ofwat have failed to ensure water companies maintain vital infrastructure. Ofwat and the Environment Agency (EA) have not done enough to ensure companies actively manage their infrastructure. At the current rate of replacement, it would take companies 700 years to replace the entire …

Government response. The government agreed, committing to publishing a White Paper this autumn, Ofwat developing a new asset condition assessment methodology by 2027, and the Environment Agency increasing staff. Both regulators are also developing a Delivery and Monitoring Framework for water industry …
HM Treasury
3 Conclusion 42nd Report - Water sector regulation Deferred

Publish monthly list of housing and commercial developments delayed or blocked by Environment Agency

Defra and the Environment Agency have been far too slow in planning for the future and this now hinders economic growth. Recommendations this Committee made to Defra five years ago around accelerating the pace of investment have not been acted on, which has proved to be shortsighted. Water companies now …

Government response. The government agreed with the recommendation, stating that the Environment Agency (EA) already monitors and enforces compliance with discharge permits. However, it did not commit to the specific requests for the EA to write to the Committee or publish a …
HM Treasury
4 Conclusion 42nd Report - Water sector regulation Accepted

Ensure money raised from water company fines permanently goes to improving the system

The Environment Agency is failing to ensure that wastewater companies meet their environmental targets, resulting in excessive use of combined sewer overflows and environmental pollution. The EA and Ofwat are taking enforcement action against every wastewater company for their poor performance on storm overflows. Previous mismanagement has presented a risk …

Government response. The government states Ofwat has tripled enforcement capacity and uses regulatory tools to hold companies to account. The Environment Agency has exceeded inspection targets and transformed its regulatory approach. The Chief Executives of both regulators have written to the Committee …
HM Treasury
5 Recommendation 42nd Report - Water sector regulation Accepted

Ofwat to review powers to improve water sector financial resilience and clarify insolvency costs

Financial fragility of a few large companies in the sector is leading investors to lose confidence in regulation as well as the sector. We need to return to a water sector that is low risk and low return. Currently, company group structures are complex, and some companies in groups are …

Government response. The government states Ofwat continuously monitors financial resilience and has secured £1.9 billion in new equity for six companies. A new single water regulator will be established, and the government will respond to the Independent Water Commission's recommendations in a …
HM Treasury
6 Conclusion 42nd Report - Water sector regulation Accepted

Mandate Defra to clarify and fill gaps in water sector regulator responsibilities and trade-off considerations.

No-one is taking responsibility for ensuring that the regulatory system works, as is evident by its failings. Defra has overall responsibility for the regulatory framework. However, it is not planning an improvement of the system it describes as “piecemeal”. There are gaps in key areas such as oversight of the …

Government response. The government plans to abolish Ofwat and merge its functions into a single new regulator, subject to consultation this autumn. It will publish a Strategic Policy Statement and ministerial direction this autumn to clarify expectations and respond to the Independent …
HM Treasury
7 Recommendation 42nd Report - Water sector regulation Accepted

Publish regulatory roadmaps for new water sector powers and future strategic changes by Autumn 2025.

Defra seems to be passively waiting for the Water Commission to report before making changes to the system. Defra has acknowledged the need for a complete reset of strategic planning and has committed to accepting the recommendations for the Water Commission, but it expects they may take legislation to fully …

Government response. The government will publish a White Paper for consultation and a new Water Reform Bill this autumn 2025, along with a transition plan. It will also clarify expectations through a Strategic Policy Statement and ministerial direction later in 2025, addressing …
HM Treasury
1 Conclusion 42nd Report - Water sector regulation Accepted

Committee examined evidence from key regulators and stakeholders on the water sector.

On the basis of a report by the Comptroller and Auditor General, we took evidence from the Department for Environment, Food and Rural Affairs (Defra), the Environment Agency (the EA) and the Water Services Regulation Authority (Ofwat) on regulating the water sector.1 We also took evidence from the Chief Executive …

Government response. The government states there will be a quadrupling of investment in the water sector. Ofwat has established Price Control Deliverables to ensure companies deliver improvements and will track progress and publish a review next year. Ofwat will also engage with …
HM Treasury
8 Conclusion 42nd Report - Water sector regulation Acknowledged

Water company customer trust at lowest level due to environmental and service failures.

Customer trust is at its lowest level since monitoring began in 2011.14 The Consumer Council for Water told us that, according to its survey, environmental performance was the biggest driver of dissatisfaction amongst customers.15 Committee members also drew attention to problems experienced by our constituents, including poor company responses to …

Government response. The government recognises that customer trust in water companies is low and that environmental performance is a key driver of customer dissatisfaction, and is taking action to hold water companies to account for their environmental performance and to ensure that …
HM Treasury
9 Conclusion 42nd Report - Water sector regulation Acknowledged

Unsatisfactory explanation of water bills undermines customer understanding and trust.

Customer bills cover operating costs; returns for financing used to pay for capital enhancements; and a contribution towards capital repayments.19 The Consumer Council for Water told us that to rebuild trust people need to understand what they are getting for their money.20 Ofwat described the way companies have explained customers’ …

Government response. The government agrees that customers need to understand what they are getting for their money, and states Ofwat is working with water companies to improve the clarity and transparency of bills.
HM Treasury
10 Conclusion 42nd Report - Water sector regulation Acknowledged

Water mains replacement rates are unsustainable, threatening environmental health and infrastructure.

Water companies have a large and extensive network of assets that they are responsible for maintaining, including reservoirs, treatment works, pumping stations, and water supply and sewer pipes. Ofwat published a targeted review of asset health in 2017, followed up by work on asset management maturity in 2021. In December …

Government response. The government supports the work of Ofwat to ensure water companies have robust plans for asset maintenance and replacement, and notes that Ofwat published a targeted review of asset health in 2017, followed up by work on asset management maturity …
HM Treasury
11 Conclusion 42nd Report - Water sector regulation Acknowledged

Ofwat's asset health measurement relies on retrospective data, impeding proactive maintenance.

Ofwat told us that it is challenging to understand asset health for a sector where so many of the assets are below ground and can only be measured indirectly.24 Ofwat illustrated this problem when it told us about the challenge of making sure companies replace mains which are in a …

Government response. The government notes Ofwat's powers to require companies to develop and implement long-term asset management plans and take enforcement action against companies that fail to maintain their assets properly, and that Ofwat has recently consulted on proposals to strengthen its …
HM Treasury
12 Conclusion 42nd Report - Water sector regulation Acknowledged

Wastewater asset inspection responsibilities are unclear, lacking a dedicated inspectorate function.

The UK has one of the highest standards of drinking water quality in the world, and the Drinking Water Inspectorate (DWI) does inspect water supply assets.28 But the responsibility for wastewater is much less clear. The EA’s responsibility is to conduct inspections only to assess compliance with environmental permits. Ofwat …

Government response. The government recognises the importance of robust regulation to ensure water companies are meeting their obligations to protect the environment and provide high-quality drinking water and is committed to ensuring that regulators have the powers and resources they need to …
HM Treasury
13 Conclusion 42nd Report - Water sector regulation Acknowledged

Growing water supply-demand gap threatens future security, requiring accelerated infrastructure development.

In 2020, the previous Public Accounts Committee recommended that Defra provide an update on how it planned to accelerate the pace of infrastructure improvement, to address the gap between future water supply and demand in England, which was estimated to be 3.6 billion litres per day by 2050.31 Five years …

Government response. Defra, the EA, and Ofwat are working together through RAPID to accelerate the development of new water resources infrastructure and the government has also set ambitious targets to reduce leakage and demand, and is working with water companies to help …
HM Treasury
14 Conclusion 42nd Report - Water sector regulation Acknowledged

Lack of water infrastructure delays critical housing and development projects across regions.

Defra told us that the importance of water to big investment and development opportunities was clear.36 But Water UK told us a lack of water in Cambridge had delayed the building of a new cancer hospital.37 The EA told us it had had to do a lot of work with …

Government response. Defra, the EA, and Ofwat are working together to ensure that water resources are taken into account in planning decisions and a minister-led taskforce has been set up for high-profile infrastructure projects.
HM Treasury
15 Conclusion 42nd Report - Water sector regulation Acknowledged

Defra and EA lack data on housing projects stalled by water system constraints

Defra and the EA could not tell us how many proposed new homes are not being built because of water system constraints.40 Defra told us that it has set up a minister-led taskforce for high-profile infrastructure projects, working to ensure they can be built quickly.41 We explored with witnesses how …

Government response. Defra, the EA, and Ofwat are working together to ensure that water resources are taken into account in planning decisions and a minister-led taskforce has been set up for high-profile infrastructure projects.
HM Treasury
16 Conclusion 42nd Report - Water sector regulation Acknowledged

Significant short-term action needed for water companies to meet environmental targets

Significant action needs to be taken in the short term to meet environmental targets. In 2023 Defra published the Environmental Improvement Plan and set targets for the sector to reduce leakage and demand, and address sewer discharges and phosphorus in treated wastewater. It published the Expanded Storm Overflows Discharge Reduction …

Government response. The government agrees that significant action is needed to meet environmental targets and highlights existing plans and the EA's role in monitoring and enforcement, without committing to new actions.
HM Treasury
17 Conclusion 42nd Report - Water sector regulation Acknowledged

Water companies' environmental performance remains poor with increasing pollution and regulatory failures

We asked the witnesses about water companies’ current environmental performance. Ofwat and the EA are taking enforcement action against every wastewater company for their management of combined sewer overflows. Water quality pollution incidents have increased.47 WildFish highlighted failures in regulation in its written submission, while in its written submission the …

Government response. The government recognises the concerns about water companies’ current environmental performance and is committed to holding water companies to account for their environmental performance, and is working to ensure that they are meeting their obligations to protect the environment.
HM Treasury
18 Conclusion 42nd Report - Water sector regulation Acknowledged

Environment Agency faces 'justice gap' in prosecuting widespread water company breaches

The EA told us it is increasing the number of inspections it does, and its teams are building up expertise in how wastewater treatment plants work.52 Of the 4,600 inspections the EA undertook last year, it told us found breaches in permits in 1,653, including 92 serious breaches and six …

Government response. The government supports the EA’s work to increase the number of inspections it does and build up expertise in how wastewater treatment plants work and is also working to address the “justice gap” where the EA cannot prosecute all the …
HM Treasury
19 Conclusion 42nd Report - Water sector regulation Acknowledged

Regulators lack power to impose enforcement undertakings on water companies

Both the EA and Ofwat told us they would like to encourage companies into ‘enforcement undertakings’, whereby companies are obliged to take action to fix an issue, or return money to bill-payers. The EA told us that at present, only 12% of its cases get an offer of undertakings. Both …

Government response. The government encourages the EA and Ofwat to use enforcement undertakings where appropriate and is working to ensure they have the necessary powers.
HM Treasury
20 Conclusion 42nd Report - Water sector regulation Accepted

Most water company fines go to Treasury, delaying restoration fund disbursement

Over the period 2019 to 2024 water companies paid over £430 million in penalties as a result of enforcement action from the EA and Ofwat. Of the fines imposed by the EA, 84% went to HM Treasury.56 Defra told us that it is looking at ways of channelling money into …

Government response. The government recognizes the importance of using penalties paid by water companies to benefit the environment and cites the Water Restoration Fund as an example.
HM Treasury
21 Conclusion 42nd Report - Water sector regulation Acknowledged

Financial resilience of the water sector has weakened significantly across many companies

The financial resilience of the water sector has weakened. While Water UK pointed out to us that some companies are resilient, Ofwat has signalled its concerns about the financial resilience of 10 of the 16 major companies.60 In 2023–24, 10 companies could not cover their interest payments with cash from …

Government response. The government is concerned about the financial resilience of the water sector, notes Ofwat's powers to prevent dividend payments, and is committed to working with Ofwat to ensure water companies are financially resilient.
HM Treasury
22 Conclusion 42nd Report - Water sector regulation Acknowledged

Grant Ofwat legal powers over water companies' wider corporate structures

Companies have taken large dividends in the past – in 2005 and 2018 a company paid a dividend of more than 100% of the equity in the company, and in 9 other cases in the last 34 years companies have paid dividends of more than 60% of the equity in …

Government response. The government acknowledges water companies should not be paying excessive dividends at the expense of investment, and notes Ofwat's powers to prevent dividend payments if financial resilience is insufficient and monitoring of water companies' dividend policies.
HM Treasury
23 Conclusion 42nd Report - Water sector regulation Acknowledged

Water companies face challenges raising new equity despite increased investor returns

First Economics told us that financial resilience depends on having confidence that financial markets will supply water companies with new debt and equity.73 Ofwat estimates companies will need around £12 billion in new equity over the next five years to support their spending plans.74 Ofwat told us that companies had …

Government response. The government recognises that financial resilience depends on confidence in financial markets, is committed to creating a stable regulatory environment, and is working with Ofwat to ensure water companies are financially resilient.
HM Treasury
24 Conclusion 42nd Report - Water sector regulation Acknowledged

Costs of special administration for insolvent water companies may fall to billpayers

We sought to understand would happen if a water company became insolvent. Defra told us that that the special administration regime will ensure that services are protected.78 Defra also acknowledged that there would be costs involved in setting up such a regime, which the government would seek to recover.79 If …

Government response. The government confirms that the special administration regime will protect services if a water company becomes insolvent and it has the power to recover costs through customer bills if necessary, committed to protecting customers in such an event.
HM Treasury
25 Conclusion 42nd Report - Water sector regulation Acknowledged

Water regulation in England is fragmented, lacking comprehensive net zero assessment and robust wastewater security.

Defra has overall responsibility for setting the policy and regulatory framework for water in England.82 Defra told us there is “too piecemeal a picture” of regulation currently, with overlaps and gaps in responsibilities.83 71 Qq 34, 110 72 C&AG’s Report, para 3.32 73 Q 3 74 C&AG’s Report, para 3.6 …

Government response. The government acknowledges the need for a joined-up approach to water management and is considering the Water Reform Committee's recommendations, with next steps to be set out in due course.
HM Treasury
26 Conclusion 42nd Report - Water sector regulation Acknowledged

Lack of formal mechanism to balance environmental improvements with water sector affordability and investment.

We asked whose responsibility it is to balance environmental need with affordability. Ofwat told us that there is no formal basis for making trade-offs between affordability and making improvements, nor was there in previous price reviews.87 Defra acknowledged that there had been “deep under-investment” leading to a big jump up …

Government response. The government states that Ofwat has a statutory duty to ensure that water companies can finance their functions while protecting customers, and that Defra sets the overall policy framework and environmental objectives.
HM Treasury
27 Conclusion 42nd Report - Water sector regulation Acknowledged

Independent commission currently reviewing the water sector's regulatory system, indicating need for fundamental reform.

An independent Commission, headed by Sir Jon Cunliffe, is currently reviewing the water sector regulatory system.91 Defra told us that recognised that the sector needed a “fundamental reset”. Defra told us that the Commission was asked to cover areas including the regulatory system structure for planning as well as strategic …

Government response. The government agrees the water sector needs a fundamental reset and is considering the Water Reform Committee's recommendations, with next steps to be set out in due course.
HM Treasury
28 Conclusion 42nd Report - Water sector regulation Acknowledged

Defra accepts interim report calling for water sector reset, creating uncertainty impacting credit-worthiness.

Defra told us that the Commission’s interim report says that the sector needs a reset in its strategic planning, legislative framework, regulatory framework, water company structures, governance, assets and resilience.94 Defra told us that it fully accepted the contents of the interim report, and had big changes to make.95 In …

Government response. The government agrees the sector needs a reset and is considering the Water Reform Committee's recommendations, with next steps to be set out in due course.
HM Treasury
29 Conclusion 42nd Report - Water sector regulation Accepted

Urgent water sector issues persist despite new Act; key powers and accountability measures face delays.

Defra acknowledged that some issues were too pressing to wait until it implemented the Commission’s recommendations. Defra told us that it took some of the actions needed in the Water (Special Measures) Act. However, EA told us that its power to take action when storm overflows are used on days …

Government response. The government agrees that some issues are too pressing to wait, and cites the Water Act 2024 and Ofwat's consultation on the fit and proper person test as actions already taken.
HM Treasury
30 Conclusion 42nd Report - Water sector regulation Acknowledged

Water regulators are increasing inspection capacity and enhancing operational cooperation and information sharing.

The regulators told us about operational changes they were making now. The EA told us it has increased its capacity to carry out inspections, and expects to do 10,000 a year from next year, including returning to areas where issues were found this year.99 We asked the regulators if there …

Government response. The government welcomes the operational changes that the regulators are making to improve their oversight of the water sector and notes that the EA has increased its capacity to carry out inspections of water company sites and assets, and Ofwat …
HM Treasury

Oral evidence sessions

1 session
Date Witnesses
9 Jun 2025 Dame Tamara Finkelstein DBE · Department for Environment, Food and Rural Affairs, David Black · Ofwat, David Henderson · Water UK, David Hill · Department for Environment, Food and Rural Affairs, Dr Mike Keil · Consumer Council for Water, John Earwaker · First Economics, Philip Duffy · Environment Agency View ↗

Correspondence

4 letters
DateDirectionTitle
27 Apr 2026 To cttee Letter from the Department for the Environment, Food and Rural Affairs and OFWA…
2 Feb 2026 To cttee Letter from the Permanent Secretary at the Department for Environment, Food and…
1 Dec 2025 To cttee Letter from the Chair to the Permanent Secretary at the Department for the Envi…
16 Jun 2025 From cttee Letter to the Chair of the Independent Water Commission relating to the regulat…