Half of England is officially in drought for the second consecutive year, and the government's ambitious housebuilding agenda is colliding with a stark reality: there simply isn't enough water. The Environment Agency has warned of dire consequences for the economy, environment, and wildlife, while councils in the driest regions say crumbling infrastructure and supply shortages are making the promise to build 1.5 million homes by the end of this parliament nearly impossible to fulfill.
Areas under extreme water stress, including parts of Hampshire, Kent, Hertfordshire, Essex, and Cambridgeshire, are exactly where the government's 'build, baby, build' strategy is focused. Environmental pressures are already critical: fenlands are collapsing from over-extraction, and chalkstreams require artificial maintenance to survive. Some water companies openly state there is 'insufficient' water for new homes, a situation worsened by decades of underinvestment.
Local Councils Sound the Alarm
Paul Harvey, Independent leader of Basingstoke and Deane Council, which is being forced to plan for more than 1,000 new homes a year, said: 'We cannot magic up more water. They say build, baby, build but it is something we cannot just wave a wand and do.' He added that the council's water cycle study showed 'demands for water from new housing may outstrip the limits of sustainable supply.'
In Basingstoke, the housing target has jumped from 830 to 1,150 homes annually. Neighboring East Hampshire faces a 98% increase to 1,142 homes per year. Yet the council, Natural England, and the Environment Agency have been unable to approve a local plan because there is not enough water to meet these demands. The Environment Agency has banned South East Water from extracting more water from the Greywell chalk aquifer, a decision the company is appealing. Meanwhile, a promised pipeline to bring water from the Surrey Hills to Basingstoke, originally due by 2030, has not been built, and regulators have disallowed funding.
Environmental Collapse and Artificial Streams
Around Basingstoke, the struggle to supply existing residents is pushing one of southern England's largest alkaline fens toward irreversible ecological collapse, according to Natural England. In Cambridgeshire, the Environment Agency is artificially filling chalk streams because of over-extraction. Despite this, ministers are proposing a development corporation for Greater Cambridgeshire that could add another 150,000 homes, bypassing elected councils.
Ali Morse, water policy manager at the Wildlife Trusts, said: 'This week we've seen drought declared across half of England, but even under normal conditions, water scarcity is emerging as an urgent issue. Mapping by the Environment Agency shows that even under normal flow conditions, there isn't any additional river water available to serve new homes or industry across roughly a third of the country.'
Cambridge's Water Credit Scheme Stalls
In Waterbeach, a fenland village of 5,726 residents where 4,500 more homes are planned, a hosepipe ban is already in force. The Environment Agency initially rejected the new homes due to water scarcity but lifted objections in November 2024, contingent on measures like a water credit scheme, a limit of 89 litres per person per day, and investment in a new reservoir. However, two years on, the credit scheme is not operational, and no developer has contributed funds.
Sam Davies, former independent councillor on Cambridge City Council, said: 'Residents are being told: Don't fill up your paddling pool, the splash pool is closed because there is no water. But commercially that growth is just ripping away at speed and no one wants to talk about the lack of water.' The plans also ignore the massive water demands of datacentre growth, including one of England's largest at Sutton's innovation campus.
Liberal Democrat MP Pippa Heylings, representing South Cambridgeshire, said: 'If you want growth then water is a deal breaker. The government are now attempting to unlock growth on the promise of water credit sales that have no evidence-base nor monitoring, and which are not up and running yet two years in.'
Kent Faces Similar Struggles
In Tonbridge and Malling, Kent, South East Water says there is insufficient supply for the 19,000 homes demanded by 2042. Conservative council leader Matt Boughton said: 'There is not one specific water infrastructure improvement that would solve this. It is the culmination of a water sector that has simply not kept up with modern demand. You can drill as many boreholes into acquifers as you want, but if the water isn't there, you are still trying to extract the same natural resource from the ground which isn't available.'
Damian Hinds, Conservative MP for East Hampshire, questioned the sustainability of planned housebuilding, noting that 'existing water infrastructure is not capable of supporting development on that scale without infrastructure investment, which has yet to materialise.'
Industry and Government Respond
Nick Price, head of water resources at South East Water, said: 'We understand and appreciate the level of urgency surrounding the issues of water security and infrastructure delivery. We are reviewing and progressing options to reduce the risk to customers and the environment as quickly as possible.'
A government spokesperson said: 'We will build the homes this country needs and our water delivery taskforce will make sure that this is not constrained by water capacity, alongside our action to improve water efficiency and invest in new infrastructure like reservoirs. Water companies have a duty to plan and deliver the infrastructure needed for new homes.' The government defended the Greater Cambridge Development Corporation and said it remained committed to the water credit scheme.
Basingstoke council leaders are due to meet South East Water's new chief executive this week to demand answers on the Surrey Hills pipeline and housing levels. They are also seeking a meeting with housing minister Matthew Pennycook. Harvey concluded: 'Roads, schools, GP surgeries and now, most fundamentally of all, water. The investment that should have built the Surrey Hills pipeline, upgraded the treatment works, and ended reliance on the crumbling Greywell source was instead siphoned off to shareholders and executives. Now the bill has come due.'
