There is something impressively British about asking more than 200,000 people whether they would like Parliament to ask everybody else a question, and responding by arranging a meeting at which nobody gets to vote on whether the question should be asked.

Yet that, broadly, is where we find ourselves.

A petition created by Ash Smith, co-founder of campaign group WASP, calls for a binding national referendum on whether the water industry should be returned to public ownership

It has attracted more than 208,000 signatures and, on 14 September, MPs duly gathered in Westminster Hall to debate it.

There was, however, never going to be a vote.

That is not some dastardly parliamentary manoeuvre invented especially for the water industry. It is simply how petition debates work.

And therein lies a rather interesting story.

The parliamentary petitions system comes with some reassuringly precise numbers.

Reach 10,000 signatures, and the Government will respond.

Reach 100,000 and your petition will be considered for debate in Parliament.

The WASP petition comfortably cleared both thresholds and, by 17 September, had passed 210,000 signatures. It remains open until 1 October.

So what does passing 100,000 signatures actually buy you?

A debate.

Not legislation. Not a referendum. Not even necessarily a vote on whether there should be a referendum.

Parliament's own explanation could hardly be clearer: petition debates are general debates. They allow MPs to discuss an issue and question a government minister, but they do not end with MPs voting on the request contained in the petition.

In other words, 208,000 people asked Parliament for a vote.

Their reward was a debate that could not provide one.

If this feels like an unusually elaborate way of allowing the public to be heard without requiring anyone to do what they ask, and that is, because it is.

But 208,000 people are not nothing

It would be too easy, however, to dismiss the whole exercise as parliamentary theatre.

Because something important has happened.

Public ownership of water has moved from being an argument largely conducted by campaigners into a formal parliamentary discussion at a particularly awkward moment for the industry.

The water industry in England and Wales has been privately owned since 1989. More than three decades later, the debate is being conducted against a background of pollution, financial instability, accumulated debt, rising bills and profound public dissatisfaction with parts of the sector.

The petition itself argues that privatisation has failed and that the public should decide who owns and controls what is, after all, an essential monopoly service.

You can agree or disagree with that conclusion.

But 208,000 signatures make it rather harder to pretend the question isn't being asked.

And it isn't only campaigners asking it.

When the petition crossed 10,000 signatures, the Government was required to respond.

Its April answer was not especially ambiguous.

It said it had “no intention of nationalising the water sector currently” and did not believe a national referendum would produce faster improvements for customers or the environment.

Instead, ministers argued that nationalisation would take years, create legal and operational complexity and distract from the immediate task of tackling sewage pollution and improving water quality. The Government pointed towards stronger regulation, enforcement, inspections and its proposed new water regulator as the faster route to improvement.

That is a perfectly legitimate policy position.

But it doesn't quite answer the question the petitioners asked.

They didn't ask the Government whether it wanted to nationalise water.

They asked whether the public should decide.

There is a subtle but rather important difference.

Water has become a remarkably uncomfortable subject for governments because the usual political dividing lines are becoming less useful.

The argument is no longer simply public ownership on the left versus privatisation on the right.

There are questions about mutual ownership, not-for-profit structures, special administration, public benefit companies and other models between the familiar poles of Whitehall ownership and conventional shareholder-owned utilities.

Even the legal route is less straightforward than some of the rhetoric suggests.

The House of Commons Library says neither the 1989 nor 1991 legislation prohibits public ownership. Bringing companies into public ownership would probably require new primary legislation and compensation arrangements, although compensation would not necessarily have to equal full market value. If a company were insolvent, shareholder compensation could potentially be nil.

And then there is the price tag.

Whenever nationalisation enters the conversation, £100 billion tends to arrive shortly afterwards, looking stern and expensive.

Defra has estimated that nationalising the sector could cost around £100 billion, using the industry's regulatory capital value as a proxy for the value of its debt and equity.

But the Commons Library's rather important conclusion is that there is no definitive assessment of what public ownership would cost.

Its briefing identifies several very different calculations. Defra's estimate was around £100 billion. Frontier Economics, in work commissioned by Thames Water's creditor group, projected £144 billion by 2030 using a similar regulatory-capital-value approach.

The Office for Budget Responsibility did something different again. Its 2025 work suggested bringing water companies onto the public-sector balance sheet could increase public-sector net financial liabilities by around £78 billion. That was a balance-sheet assessment, not an estimate of the cheque the government would have to write to buy the companies.

Those distinctions matter.

£100 billion may ultimately prove a reasonable estimate of the economic consequences of a particular nationalisation model.

But saying “nationalisation costs £100 billion” as though someone has already located the relevant companies on Rightmove and added them to the basket is rather less helpful.

If public ownership is going to be debated seriously, both supporters and opponents should have to explain which ownership model they mean, what would actually be acquired, how compensation would be calculated, what happens to existing debt and how future investment would be financed.

Those are difficult questions.

They are also considerably more useful than slogans.

There is another uncomfortable point for advocates of public ownership.

Changing the name above the door does not magically repair a sewer, nor does it build a new reservoir.

Public ownership would not make leaking pipes watertight overnight, create reservoirs, expand treatment works or remove decades of debt and underinvestment by administrative decree.

A publicly owned water industry would still require enormous capital investment. It would still need competent management. It would still need environmental regulation. It would still make unpopular decisions about bills, infrastructure and water resources.

Public ownership is therefore not, by itself, a water policy.

But neither is private ownership.

That may be the more useful lesson from the past three decades.

The question isn't simply whether the owner is the state, shareholders, customers, a mutual or some ingenious structure not yet blessed with an acronym.

It is whether the ownership and regulatory system encourages investment, protects customers, maintains financial resilience and delivers the environmental outcomes society expects.

If it doesn't, changing it becomes a perfectly reasonable subject for discussion.

Not the referendum requested.

Not a parliamentary vote on whether there should be one.

And certainly not public ownership.

But saying the petition achieved nothing would also be wrong.

More than 200,000 people have forced the ownership question onto Parliament's agenda. MPs have had to discuss it. Ministers have had to defend the existing policy. The Commons Library has produced a substantial briefing examining the practical routes and costs of public ownership. And the argument has moved beyond whether people are angry with their water companies towards the much more consequential question of what should replace a system many believe is failing.

That matters.

It also exposes the peculiar limitation of the petition process itself.

The parliamentary website tells citizens that 100,000 signatures can secure consideration for a debate.

WASP got more than twice that.

Parliament debated precisely what those people asked it to discuss.

And then everyone went home.

Perhaps that is democracy working exactly as designed.

But when more than 200,000 people have specifically asked for a mechanism through which the wider public can make a decision, it is reasonable to ask whether simply allowing MPs to talk about it is enough.

Because eventually the question facing the government may not be whether it wants to nationalise Britain's water industry.

It may be whether it is prepared to find out if the public does.

Editor’s Note: The petition calling for a referendum on bringing the water industry into public ownership remains open until 1 October 2026. At the time of publication, it had attracted more than 210,000 signatures. Readers who want to read the petition in full or add their signature can do so on the UK Parliament petitions website.

You can find the petition here: https://petition.parliament.uk/petitions/762640

WaterMatters will also shortly be speaking with Ashley “Ash” Smith, who launched the petition and was a prominent contributor to Channel 4’s Dirty Business. Tim Smedley will be talking to Ash about the campaign, what happened when the petition reached Parliament, and where the debate over the future ownership of England’s water industry goes next. Look out for the interview on WaterMatters in the coming weeks.