Mayors Could Get Oversight of Water Firms Without Renationalisation
The UK government is considering giving elected mayors and other local leaders formal oversight of water companies. The companies would stay private, but they would face stronger public control.
Officials in the Department for Environment, Food and Rural Affairs support the idea, but no final decision has been made. The proposals were reported on 16 September 2026 by The Guardian.
Under the proposals, local leaders could direct parts of water company spending. They could also hold bosses to account over customer bills and sewage discharges.
What local oversight would mean
The plan would create nine new regional bodies to oversee water companies, as reported by the BBC. The bodies would be responsible for planning, setting objectives and holding companies to account.
Membership is still under discussion. Current thinking includes a local government figure, a mayor, an independent chair, experts, and other representatives from sectors such as transport and agriculture. Water investment would be linked to wider regional priorities, including land use and infrastructure planning.
The idea did not start in Whitehall. It was a key recommendation in Sir Jon Cunliffe's review of water companies. The Cunliffe review said the change would give local voices, customers and experts stronger authority over company boards' decisions on investment priorities.
No decision has been made. Ministers are weighing the proposal alongside other structural reforms. The scope of any direction-making power, its legal basis, and its relationship to economic regulation remain undefined.
Complaints, bills and Thames Water
Household complaints about water companies are up 48% year on year, according to the Consumer Council for Water. That is the steepest annual rise in two decades.
Thames Water serves 16 million customers. At the end of March, its regulated asset value, the official estimate of its asset base used to set price limits, was estimated at £23bn. Its net debt had increased to £18.5bn.
Ministers are considering two paths for Thames Water. One is special administration. The other is a creditor-proposed solution that would maintain private-sector control after a debt write-off. The London Assembly archive notes Thames Water bills increased by 40 per cent.
Special administration would place the company under temporary state stewardship under the existing insolvency framework for essential utilities, like a caretaker manager keeping services running. A creditor-led solution would keep control in private hands, conditional on lenders absorbing losses.
A crowded regulatory reset
Ofwat, Britain's water regulator, scrutinises water companies' proposed spending every five years. Its PR24 final determinations set out the revenue, service and incentive package for water companies for 2025-30, as set out in Ofwat's methodology.
Enforcement and pricing decisions continue in parallel. Britain's water regulator ordered water companies to return a total of £157.6 million ($206 million) to customers through cuts to customer bills after missed targets. Ofwat provisionally approved allowing five British water companies to raise customer bills, while the UK competition regulator curbed water bill hikes to 2.2% for some water firms.
The Independent Water Commission has called for deeper structural change. Its interim report said a more supervisory approach is needed, combining strategic oversight with deep understanding of companies. Its final report said a single regulator would ensure a 'whole firm view' of water company performance and compliance.
The review recommended a single water regulator in England and a single water regulator in Wales to replace the fragmented regulatory system. Separately, the UK government intends to prescribe water and sewerage companies in 'Requirement to Assist' regulations under its proposed new system. It has also confirmed plans to introduce a new Clean Water Bill as part of its legislative programme.
The broader context here is a negotiation over where accountability should sit. Central economic regulation sets allowed revenues and service commitments. Regional bodies would add a political layer focused on investment priorities and local outcomes. For company boards, that could mean answering to two principals with different time horizons and incentives.
Looking at what this means for implementation, three frictions stand out. First, direction over spending risks blurring the line between strategic planning and operational management. Second, holding executives to account for bills and sewage discharges overlaps directly with Ofwat and Environment Agency functions. Third, Thames Water constrains sequencing. A decision on special administration or creditor control will shape market expectations long before any regional architecture is legislated.
In my view, the proposal is best read as an effort to localise legitimacy rather than to replace regulation. It would not alter gearing, asset values or statutory duties by itself. It would change who sits in the room when investment trade-offs are debated, and who can claim a mandate when those trade-offs prove unpopular.
