Gideon Amos has welcomed the government's decision to abolish Ofwat.
The Liberal Democrat MP for Taunton and Wellington said the move is a step toward tougher regulation of water companies.
Mr Amos said: "Supporting the great volunteers in Wellington in their work trying to protect our River Tone, underlined for me the scandal of sewage being pumped into our rivers while massive profits are extracted and sent overseas.
"Figures just released of 260 days of serious sewage spills by Wessex Water in 2024 are a scandal.
"Even worse, as I pointed out, last year Wessex Water paid out £70m profits to shareholders, part of £4bn paid out since the privatisation of our water by the Conservatives – something I always opposed."
The MP has previously campaigned for stronger water regulation and cleaner rivers, including efforts to secure Bathing Water Status for the River Tone.
He described the government’s decision to scrap Ofwat as a direct result of Liberal Democrat pressure.
Mr Amos said: "Volunteers in Wellington and those in Taunton, who helped me apply for Bathing Water Status as a way to make clean-up happen, will be pleased to hear the overdue announcement that Ofwat is to be abolished and that the government now wants to be tougher on the water companies.
"That’s a win for the Lib Dems as we’ve been calling for it to be scrapped since 2022.
"But government now has to deliver, create a tougher regulator, turn water firms into public benefit companies, and fully ban bonuses for polluting businesses still being added in the form of even higher salaries.
"That's not acceptable."
Mr Amos said he would continue to campaign for lasting change.
He said: "I’m not going to stop working on this, and nor are my fellow Lib Dems in parliament, until the government gets tough on these firms and our rivers and waterways are less polluted."
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