Ofwat has today published its draft Outcome Delivery Incentive (ODI) determinations for 2025-26, which propose a net £240 million reduction in customer bills, of which £107 million will be returned in customer bills in 2027-28.

Ofwat says that under-performance by the majority of water and wastewater companies in England and Wales, will mean companies have to return £114 million to customers next year.

Thames Water will have to return £51 million to its customers and Southern Water almost £30 million after missing key performance targets.

Dŵr Cymru has topped the customer measure of experience (C-MeX) in Ofwat’s league table with Portsmouth Water in second, and Wessex Water in third place.

Ofwat has today launched a new consultation on its proposals to adjust the outperformance and underperformance payments water companies in England and Wales can expect to receive or lose for the final year of AMP6.

Ofwat will today begin consulting on proposed outperformance and underperformance payments for four of the seventeen water companies in England and Wales, to be applied from April of next year.

Ofwat will today begin consulting on proposals to adjust the price controls for three of the eighteen water companies in England and Wales, to be applied from April of next year.