“We’ve had a system whereby water companies are marking their own homework,” Reynolds told the BBC.

“This has been a whole system failure,” she said. “A failure of regulation, a failure of regulators, of the water companies themselves.”

The Water White Paper promises to set up company-specific teams to monitor, supervise and support individual firms and their particular issues rather than rely on a “desk based, one size fits all” approach.

Smart meters and mandatory water efficiency labels on appliances including dishwashers and washing machines will also help households monitor their usage and costs, the government said.

It is also creating a chief engineer role at the regulator that will be set up to replace Ofwat.

Government officials have told the BBC that the establishment of a new regulator may take a year or more and water companies say it will take time for the benefits of new investments to be felt.

The government’s reforms come after a review by Sir Jon Cunliffe, who issued 88 recommendations to improve the industry.

However, he was asked not to consider whether to nationalise the sector, which was privatised in the late 1980s.

Campaigners said the proposed reforms did not go far enough.

River Action chief executive James Wallace said the measures showed the government “recognises the scale of the freshwater emergency, but lacks the urgency and bold reform to tackle it”.

The new regulator must be “truly independent” and properly funded, he warned, and said major gaps remain.

“None of these reforms will make a meaningful difference unless the failed privatised model is confronted head on. Pollution for profit is the root cause of this crisis,” Wallace said.

Surfers Against Sewage chief executive Giles Bristow said the government’s proposed changes were “frankly insulting” and fell short of much needed structural reform.

“The truth is glaringly obvious to everyone except this government. As long as the industry is structured to prioritise profit, the public will keep paying the price through soaring bills and polluted water,” he said.