The UK risks suffering a shortage of drinking water by the mid-2030s, a Labour cabinet minister has warned.
Environment secretary Steve Reed said without investment in the country’s creaking infrastructure, the system could run into crisis.
His warning came as it emerged that water companies want to raise bills by 84 per cent by 2030. Mr Reed described the proposed price hikes as "eye-watering" - but said the issue was not one for ministers.
He told LBC Radio: “We're all facing a shortage of water within a decade and a half if we don't act now.”
Ministers have launched the biggest review of the water industry for almost four decades, after a series of scandals involving sewage dumping in Britain’s lakes and rivers.
A commission headed by the former deputy governor of the Bank of England Sir Jon Cunliffe will be challenged to “fix Britain’s broken water industry”.
The commission comes after Sir Keir Starmer’s government introduced legislation which will ban bonuses for water industry executives and could even see them jailed over major leaks.
Mr Reed told LBC: "The lack of water infrastructure is now holding back economic growth in this country, so we can't build the homes that we need in parts of the country.
"Cambridge, for instance, lacks clean water supply. Oxford lacks sewage systems sufficient to allow house building to go ahead.
"And (another) point here is that by the mid-2030s unless we take action to increase water supply - reservoirs as well as infrastructure - then the demand for drinking water will start to outstrip supply, in a way that already happens in some Mediterranean countries.
"We cannot allow the water system, the water sector, to continue in this way."
But he ruled out nationalisation, saying it would “cost tens of billions of pounds to nationalise the water sector”.
Just last month it was revealed Southern Water, one of the country’s largest water companies, is considering an emergency measure which could see up to 45 million litres of water shipped from Norway to the UK in tankers per day in case of extreme drought.
Mr Reed said the problems with the water industry are "failures of regulation and governance, not ownership" and that a new review will help "bring in the investment that we need to stop the massive bill hikes".
He also insisted he was unaware a company he accepted football tickets from was linked to a UK water firm.
Asked on Sky News about £2,000 of football tickets he had declared from CK Hutchison Holdings - which she said owns 75% of CK Infrastructure Holdings, the owner of Northumbrian Water - he said: "There was nobody from a water company that was involved in offering those tickets. There was nobody from a water company at that event."
He added: “The implication is that I would somehow go soft on water companies.”
“What I’ve actually done is bring in the toughest legislation to stop the payment of unfair bonuses, to make water bosses face criminal liability for the kind of things that they’re doing.”
Asked if he would take the tickets again, Mr Reed said: "I probably wouldn't, but I didn't know at the time and it hasn't influenced a single decision that I've taken."
An Ofwat spokesperson said: “We have backed proposals for the biggest ever package of new water supply projects, including nine new reservoirs with the potential to produce 670 million litres of extra water per day. We are also requiring companies to replace around 8,000 km of water mains pipes – a 400 per cent increase compared with the current 5-year period. We will continue to penalise companies that don’t meet their commitments on reducing leakage and a new Water Efficiency Fund will help people reduce demand and save money on their bill.”
Carla Denyer, co-leader of the Green Party said: “Water is a basic human need. It should be in public hands run for people, not profit. I don’t know why Labour won’t even consider this.”
