Ofwat Abolished: What the Cunliffe Review Means for Planning

The Cunliffe review made 88 recommendations for the water sector in England and Wales, and the one everybody remembers is the abolition of Ofwat. Fourteen months on, the picture is more mixed than the headlines suggested. Government has accepted the regulator merger, softened the regional planning reforms almost out of existence, and has not yet put a bill in front of Parliament. This article sets out what the Independent Water Commission (IWC) asked for, what survived contact with government, and what any of it changes for a scheme held up by drainage capacity today.

Reviewed 8 September 2026. Where a reform has moved, the date is given.

Ofwat still exists. As at September 2026 it remains the economic regulator for water and sewerage companies in England and Wales, and the legislation that would abolish it has been announced but not introduced.

Has Ofwat been abolished?

No. Ofwat still exists and continues to regulate water and sewerage companies in England and Wales. Ofwat is being abolished in the sense that government has decided to do it, but the Water Services Regulation Authority, to give it its legal name, has not been abolished and its powers are intact. Headlines since July 2025 have run with Ofwat abolished as though it were already done. It is not. Government committed to abolishing it and replacing it with a single integrated water regulator, and announced a Clean Water Bill to do so in the King's Speech on 13 May 2026. That bill had not been introduced to Parliament by September 2026, so Ofwat's price controls, licence conditions and enforcement all remain in force.

That distinction matters more than it sounds. Reform changes an institution, not the pipe. A treatment works with no hydraulic capacity to spare in August 2026 has the same headroom in August 2027, whichever regulator's name is above the door, and a council will ask for exactly the evidence it asked for last year. A scheme discharging to a constrained network still needs a foul drainage strategy for a planning application setting out where the flows go and whether the receiving system can take them.

Most of the coverage since July 2025 has been weakest on timing, which is where applicants get caught out. So it is worth being precise about what has actually been legislated. Nothing has.

Who regulates water in England today?

Five bodies currently share the job, which is the fragmentation the Commission was set up to examine. Ofwat sets price controls and regulates company finances. The Drinking Water Inspectorate regulates water quality at the tap. The Environment Agency issues environmental permits, regulates discharges and is the statutory consultee on flood risk. Natural England advises on protected sites, including the habitats issues behind nutrient neutrality and, in a handful of catchments, water neutrality. The Consumer Council for Water represents customers.

Under the reform the first four fold into one body. The Commission's argument was about the seams rather than the bodies: sewer overflows, phosphorus loading and asset deterioration all sat in the gaps between regulators, where nobody owned them and everybody had a partial view.

The Commission's finding was structural, not personal: "The current institutional framework is not working."

For a planning application the merger changes less than the headlines imply. The Environment Agency's role as a statutory consultee on flood risk is a planning function under the NPPF rather than a water-industry one, so nothing in the reform programme changes who comments on a flood risk assessment, or what that assessment has to demonstrate. The same holds for the local planning authority and its lead local flood authority role on surface water.

What the Cunliffe review actually recommended

Sir Jon Cunliffe's Independent Water Commission published its final report on 21 July 2025 with 88 recommendations. The IWC final report covers the whole water system, and most of it is about regulation rather than development. Four of them mattered to anyone working in planning.

• A single integrated regulator for England. Merging Ofwat, the Drinking Water Inspectorate, and the water functions of the Environment Agency and Natural England into one body, with a separate arrangement for Wales.
• Nine regional water system planning authorities. Eight covering England and one covering Wales, each producing a regional plan that would bind into spatial planning instead of running beside it.
• A statutory National Water Strategy. A minimum 25-year horizon with five and ten-year milestones, replacing the current patchwork of guidance.
• A binding water ombudsman. Upgrading the Consumer Council for Water into a body that can direct remedies rather than mediate.

Of the four, the regional authorities were the one with real purchase on development. The problem they answered is one every planning consultant will recognise. Water companies write the investment plans and then deliver against them, on a five-year cycle; local plans run on fifteen to twenty years. The two calendars barely acknowledge each other, and an upgrade landing in the wrong investment period is precisely what turns an allocated site into a stalled one.

What government took, softened and dropped

The government's answer came in the White Paper A new vision for water, published on 20 January 2026, and summarised by the Commons Library. It is where the reform programme diverges from the review.

Read down that table and a pattern emerges. Where the Commission proposed changing who regulates, government agreed. Where it proposed changing how investment is planned against development, government kept the machinery and left out the authority.

The regional water authorities that did not happen

Of everything in the review, this is the reform that would have done most for housing delivery, and it is the one that did not survive. In place of nine statutory bodies with regional plans and a duty to produce them, the White Paper commits to a working group.

A steering group scoping a framework from 2026 and phasing from 2027 is not the same animal as an authority with a plan and a budget. It carries no statutory duty, no alignment with local plan timetables, and no mechanism to make a water company's investment period answer to a council's housing trajectory. Whatever else the reform achieves, the misalignment the Commission identified is still sitting there.

Government did make one commitment that points the other way. It intends to ensure the right to connect for water supply and sewerage supports its housing delivery objectives, and to list water and sewerage companies as consultation bodies in the reformed plan-making system. Both are real, and both operate at local plan level rather than on an individual application. For what capacity actually does to a scheme in the meantime, our explainer on sewage capacity and planning covers the ground in detail.

When will Ofwat be abolished?

No date has been set. Ofwat will be abolished when the Clean Water Bill is passed, and that bill has not yet been introduced, so the earliest realistic point is some way into 2027. The Transition Plan that would carry a timetable was promised for 2026 and has not appeared. Here is the sequence so far.

1. October 2024. Sir Jon Cunliffe is appointed to review the water sector in England and Wales.
2. 21 July 2025. The Commission's final report lands with 88 recommendations, the abolition of Ofwat among them.
3. 20 January 2026. The White Paper accepts the regulator merger and sets out a much narrower regional planning reform.
4. 11 May 2026. Dame Julia Black is appointed Senior Adviser to the Secretary of State on water reform transition.
5. 13 May 2026. The King's Speech announces the Clean Water Bill: one regulator, a water ombudsman, new pollution offences, and provision for pre-pipe solutions such as sustainable drainage.
6. September 2026. Still no bill. The Clean Water Bill has not been introduced, and the only water bill before Parliament is a private member's bill, which is not government legislation and carries no weight in planning.

Until a bill is introduced, read a second time and passed, Ofwat's functions are unchanged, and so is every consent, code and price control made under them, including the code for sewer adoption agreements. Anyone planning on the basis of the new regulator is planning on a press release.

Does any of this unblock housing?

Not yet, and the numbers show why. What blocks development is treatment and network capacity. Capacity gets built with capital, on a fixed five-year cycle, and no reorganisation of regulators shortens that.

The Home Builders Federation counted close to 30,000 homes held up by wastewater capacity in England, around 7,000 of them affordable, with roughly £900 million of planning contributions at risk.

The investment that would fix it is already committed and already contested. Ofwat's 2024 price review set £104 billion of expenditure for 2025 to 2030. Five companies referred their determinations to the Competition and Markets Authority, which reported on 10 March 2026 and allowed an extra £463 million, about 17 per cent of the £2.7 billion the companies had asked for. The envelope is broadly the one set before the Commission reported, and it runs to 2030 whatever happens to Ofwat.

The environmental trend is better. Storm overflow spills in England fell to 291,492 in 2025, down about 35 per cent on 2024, with average spills per overflow falling from 31.8 to 20.5. That is progress on discharges rather than on headroom, and the two are easily confused. A works can sit comfortably inside its permit and still have nothing left for another 200 dwellings, which is also why a dry day spill tells you more about a network than an annual total does.

What it means for a planning application today

Nothing in the reform programme is a reason to wait. No case officer will accept a forthcoming regulator as grounds for deferring evidence, and in our experience raising it tends to make an authority more sceptical rather than less. The practical position is unchanged.

• Ask the water company early. A pre-development enquiry is the only way to find out whether the receiving works and network have headroom for your foul water, and it has a lead time you should price into the programme.
• Separate the surface water. Taking surface water off a combined sewer is still the fastest way to release capacity, and it is the one lever an applicant actually controls.
• Do not rely on an upgrade you cannot date. An upgrade without a committed delivery date will not satisfy a deliverability test, and a Grampian condition needs something specific to attach to before you can discharge the drainage condition.
• Treat the nutrient position separately. Wastewater treatment works serving more than 2,000 people must meet nutrient removal standards by 1 April 2030, and councils are expected to plan on that basis.
• Put the drainage evidence in the application. Water companies are not statutory consultees on planning applications and the government declined to make them so in 2026, so their capacity view reaches the case officer only if you put it there.

Where foul capacity is tight, the surface water half of the scheme is usually where the argument is won. A surface water drainage strategy that follows the discharge hierarchy properly, rather than defaulting to the sewer, is what takes load off the network and takes the objection away with it. Getting that wrong is the commonest reason for an LLFA objection, and it is usually fixable before validation rather than after.

Wales is going a different way

Wales is not joining the English regulator. On 3 February 2026 the Welsh Government published a green paper, Shaping the Future of Water Governance in Wales, proposing a dedicated standalone Welsh economic water regulator underpinned by new legislation, rather than folding Ofwat's Welsh functions into Natural Resources Wales.

For a scheme in Wales the immediate consequences are limited. Ofwat still economically regulates Dŵr Cymru and the other undertakers operating there, and Natural Resources Wales still handles environmental permitting and flood risk. The divergence is worth tracking all the same. Two regulators on two timetables is a different operating environment for anyone working on both sides of the border, and the gap will widen before it closes.

What is still worth watching

• Introduction of the Clean Water Bill. Until first reading there is nothing on the statute book, and no date has been given.
• The Transition Plan. Promised for 2026 and still unpublished; it should carry the timetable for standing the new regulator up.
• The Regional Water Planning Steering Group. Whether it produces anything with a duty attached, or stays advisory.
• The first Environmental Delivery Plans. The Planning and Infrastructure Act 2025 route out of site-by-site nutrient mitigation, and how it lands against treatment capacity.
• The August 2026 NPPF. The restructured flood risk and drainage policies took effect on 17 August 2026 and are what a decision is actually taken against.

Reform will change who regulates water. It will not change what a planning authority asks an applicant to prove about drainage. Unda prepares flood risk assessments for planning and drainage strategies across England and Wales, including foul capacity evidence and the negotiation with water companies and lead local flood authorities that goes with it. If you are not sure whether your site needs both, that explainer sets out the test. Call 01293 214444 or email enquiries@unda.co.uk.

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