Hafren Dyfrdwy has agreed to a £280,000 package of measures after an Ofwat investigation found failures linked to excessive sewage spills from storm overflows.
The regulator found that the company had not provided adequate drainage or properly managed sewage in its sewers. It also lacked the processes and systems needed to meet its obligations. The measures are planned for completion by 2030 and must not be funded through higher customer bills.
Owned by Severn Trent, Hafren Dyfrdwy provides water and sewage services to about 109,000 customers in north-east and mid-Wales. Separately, the company has been allowed to raise its average bill by £54, or 9%, to £635 in the 2026-27 financial year.








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