Water Scarcity

Jess Brown-Fuller Excerpts

Tuesday 9th December 2025 Westminster Hall

[Jess Brown-Fuller (Chichester) (LD)]

It is a pleasure to serve under your chairmanship, Mr Stuart. I am very aware that the Division bell might ring at any moment to signal that we have to go to the main Chamber for a vote, so I will very slowly begin what I had planned to be a three or four-minute speech, while waiting for the bell to ring.

I thank my hon. Friend the Member for Horsham (John Milne)—[Interruption.]

[Graham Stuart (in the Chair)]

Order. The debate is suspended for 15 minutes for a Division in the House, as brilliantly predicted by the hon. Member.

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[Graham Stuart (in the Chair)]

The debate may continue until 4.11 pm.

[Jess Brown-Fuller]

It is a pleasure to serve under your chairmanship, Mr Stuart, as much as it was 15 minutes ago. I thank my hon. Friend the Member for Horsham for securing this important debate.

The south-east, where my constituency is, has been designated as water stressed since 2021. As reflected in many of the contributions, that sometimes feels quite hard to believe in such a wet country. Much of my constituency is a low-lying coastal plain, and weather volatility is causing severe conditions on both ends of the scale. Droughts and floods are a commonplace occurrence, whereas before they were less likely.

I would like briefly to talk about chalk streams. I am very lucky to represent two of England’s 200 chalk streams, and over-abstraction on the River Ems over many years means that the point of constant flow has moved two kilometres downstream since the 1960s. That means that a large proportion of the river is drying up every summer when it never used to. Constituents have told me harrowing accounts of trying to rescue the salmon that migrate down the River Ems, and it feels like a total catastrophe when people are trying to save those fish. The Test and the Itchen, just outside my constituency, are also rare habitats and important chalk streams. They, too, are really impacted by over-abstraction.

To address that, Portsmouth Water is building the first new reservoir in more than 30 years, the Havant Thicket reservoir, just on the border of my constituency. That was largely favoured by the local community, because it would create a new space and an exciting environment for people to visit and walk around. Then Southern Water got involved. It saw this brilliant idea that was popular among the population, and it put forward a proposal to invest in Havant Thicket with Portsmouth Water by introducing an effluent recycling scheme, the first of its kind in this country to supplement our drinking water supply. By investing in that technology, Southern Water can use clever accounting tricks to maintain its bottom line by describing the technology as an asset rather than investing in fixing its existing infrastructure, which is much less appealing to its shareholders.

The cost of the scheme to introduce effluent recycling into the drinking water supply at the Havant Thicket reservoir is estimated to be £1.2 billion, but the costs are spiralling every year. There is also no lasting legacy to this project. The plant will become redundant in 60 years, but customers will be paying for it in their bills for far longer. It is also hugely energy intensive. At the same time, as many hon. Members have mentioned, Southern Water wastes 100 million litres of water every day from leaky pipes that it has failed to maintain.

[Sarah Gibson (Chippenham) (LD)]

My constituency is in Wiltshire, and the northern part is served by Thames Water. In Lyneham we seem to see outages almost every week. Thames Water is wasting water and pouring it down the streets of Royal Wootton Bassett, but cannot supply tap water to Lyneham or to parts of Bassett. On top of that, the company gives residents no information about when supply will be reinstated. Would my hon. Friend agree that water companies should be making better use of their assets, but also giving residents information when they fail?

[Jess Brown-Fuller]

I thank my hon. Friend for making a valid point. I am sure that for that reason, she agrees that the best way to address our failing water system is to make water companies into public benefit interest companies, so they are beholden to their customers and the environment before the needs of their shareholders. Although these companies may profess to care about the public, they are always looking far more closely at the bottom line and how shareholders feel.

With confidence in water companies at an all-time low, Southern Water being one of the worst offenders, it is hard to believe that the Secretary of State will sign off on the Havant Thicket project without encouraging the company to prove that all other options have been exhausted. I would appreciate it if the Minister provided an update on whether the Government are in favour of the scheme. I understand that the decision has been deferred until spring 2026. That provides an opportunity for the Minister to meet local campaigners from my constituency and the neighbouring one who would love to share their thoughts on the project, which could end up providing a blueprint for the rest of the UK.

Water scarcity is not just about supply. It is also about demand, which is rising exponentially with a projected deficit of billions of litres of water a day, as many hon. Members have mentioned. That is why I tabled an amendment to the Planning and Infrastructure Bill calling for all new developments to introduce dual piping at the build stage so that households could introduce grey water recycling into their homes without a huge cost. The cost to the developer would have been very small—we are talking in the single hundreds of pounds—and yet if households had decided to start using grey water in their washing machines, for example, or to flush their toilets, they could have made huge savings in the long run.

Although the Government chose not to accept my amendment, there does need to be a serious conversation about the use of grey water to reduce demand on drinking water. We also need urgently to implement schedule 3 to the Flood and Water Management Act 2010, which is long overdue. Although local authorities can choose to make SUDS mandatory for all new developments—I know the Minister is passionate about SUDS, as she has told me in many a Westminster Hall debate—as my local authority, Chichester district council, has done, it is still not mandatory across the country, so I would appreciate an update from the Minister on the review of schedule 3.

Portsmouth Water is undertaking a project in my constituency of Chichester to install meters on every property for which it provides water, which should mean that those that use more water pay more, and those who are conscious of their water use see a saving on their bills. With water bills going up exponentially across the country, I am sure that would be a welcome saving to lots of my constituents in Chichester.

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[Jim Shannon]

I certainly do. I know the Minister is equally concerned about that, and I am hoping that the Minister’s response will give reassurance to the hon. Lady, and indeed to all of us, in relation to that. I think there is something obscene and immoral about these executives getting large sums of money—whatever Department it comes out of and whatever way it is manipulated to get that through—and it is good to know that the Government will be taking some measures to address that.

[Jess Brown-Fuller]

Will the hon. Member join me in asking the Minister to share her thoughts on the Southern Water boss having an incredible pay rise to get round the fact that bonuses for chief executives have been banned? These private companies will always find workarounds unless we change the structure of the water companies themselves.

[Jim Shannon]

I think the two words “immoral” and “obscene” sum up the issues that the hon. Lady has referred to, and we look forward to the Minister’s response.

In 2024, Northern Ireland Water published a new water resource plan, extending its long-term planning horizon from 25 years to 50 years, so it has in place a structure to look forward at what will happen in Northern Ireland. Our population has increased by, I think, more than 200,000 in the last 10 years. The increase has been quite significant. There have been large developments. My constituency of Strangford has experienced that. There is a development coming through in the east of the town. There will be 750 new houses, and that will add stress on the infrastructure, including the water system and all the roads. But we have to address population growth, housing demand, water usage and climate change. The plan recognises that future weather patterns are likely to include more frequent extreme events, and pledges to build resilience so that the water supply remains secure.

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[Tim Farron]

The hon. Member makes an excellent point. All this afternoon’s interventions have been good and on the money. Talking about money, this is money leaking out of the industry and not being invested in it. Bonuses and dividends should reward success; clearly, Yorkshire Water and others have failed in their basic task, which is to provide clean water for their communities.

To focus on the scale of the problem, since privatisation the water companies have amassed £70 billion of debt. Adjusted for inflation, they have paid out £83 billion in dividends. That means that on average 30p out of every pound that people pay on their water bills is to service the debt of the water companies, which was racked up to pay dividends. That is a moral outrage.

The main drivers of this impending crisis are clear: climate change; population growth; increased housing demand; business expansion; the demands, which have been mentioned, for huge additional energy and water usage given the growth in AI; pressures on the natural environment; and the growing need to prepare for drought. Those drivers are compounded by historical underinvestment in infrastructure and insufficient demand management.

Successive Governments have comprehensively failed to take climate adaptation measures seriously, guaranteeing misery for communities affected by flooding, wildfires and heat stress. If we are to build new infrastructure, including new homes and data centres—and we must—we must also ensure that water infrastructure keeps pace. That means sustainable drainage, new supply capacity and integration of water resilience into planning from the start. For instance, we should ensure that data centres are built predominantly at coastal locations and that desalination plants are an integral part of their design and key to their gaining of planning consent. Otherwise, we simply will not have the capacity to both provide clean water for our people and be the AI superpower that we desire to be.

The Liberal Democrats have long backed an infrastructure-first approach to development. We cannot allow water infrastructure to remain an afterthought. It is not right that water companies that have failed to invest in adequate sewerage, drainage and water supply infrastructure are able to get away with telling the local planning authority that there is no need for further investment and, at the same time, gain the financial benefit of the extra water bills from new households, while not laying out the extra investment needed to provide for them.

[Jess Brown-Fuller]

My hon. Friend raises an important point about the infrastructure necessary at waste water treatment works. In Bosham in my constituency, a new development is coming online, which has hundreds of homes. Currently, Southern Water says that it does not have any more capacity at the waste water treatment works. Yet because it has the statutory duty to connect, people will potentially be moving into the homes without any of the water infrastructure.

Meanwhile Chichester harbour, which is a protected landscape, is having more and more sewage dumped into it because the water infrastructure has not kept pace. Does my hon. Friend agree that water companies should play an important role in the planning decisions before the houses are brought online, so that those houses are built where the infrastructure is?

[Graham Stuart (in the Chair)]

Order. Interventions should be short.