WATER and sewerage bills are set to drop by £17 a year in England and Wales.
Industry trade body, Water UK, said the average annual bill would fall by 4 per cent to £396.60 from April 1 this year.
It comes after watchdog Ofwat said in December that water firms in England and Wales must cut the average household bill by £50 - or 12% before inflation - over a five-year period.
But the changes on bills will vary depending on the supplier Brits use.
Christine McGourty, Water UK chief executive, said it was part of a driver to give customers “good value for money”.
She added: “For around £1 a day, customers get the world-class quality water they need and their wastewater managed responsibly.
"Companies are also committed to investing for the future and protecting the environment, with an ambitious goal to achieve net zero carbon emissions for the sector by 2030."
The changes are part of a price review, which is conducted every five years.
A spokeswoman for Ofwat said: “We continue to push companies to deliver improved services for customers, the environment and resilience for generations to come whilst making sure that bills are fair.
“Today’s announcement that water bills have fallen by an average of 4 per cent has been secured because we have demanded greater efficiency, passing through lower financing costs and promoting more innovation.”
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Water companies have also said they want to cut carbon emissions to zero over the next ten years.
Earlier this week, Ofgem revealed that gas boilers are going to be ditched to meet government plans to cut the amount of greenhouse gases.
In June, Southern Water was forced to pay a record £126million in fines and customer rebates to over four million households following an Ofwat investigation.
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