The fig of complaints made by households astir h2o companies to the manufacture watchdog has risen by a grounds 84% successful a year, driven by lawsuit interest and disorder implicit rising bills.
The Consumer Council for Water (CCW) said the year-on-year summation was the highest successful its 20-year past and showed "just however dissatisfied" galore radical were.
Water customers successful England and Wales person been deed with steep terms hikes successful caller years. The regulator Ofwat has besides allowed firms to put up bills by 36% betwixt 2025 and 2030.
Water UK, which represents firms, said it understood that higher bills was ne'er welcome, but the wealth was needed "to money captious upgrades".
The full fig of complaints to the watchdog roseate to 15,115 successful 2025-26, from 8,235 successful the erstwhile year.
Meanwhile, complaints made by households straight to h2o companies, which is required earlier complaining to the CCW, roseate by 56% to 321,347.
The apical 3 subjects of complaints to the CCW were measured billing, affordability and billing admin.
Mike Keil, the main enforcement of the CCW, said the figures "reflect conscionable however dissatisfied galore radical inactive are with the authorities of the h2o sector".
He said customers are "impatient to spot the benefits" of higher bills.
"Companies request to beryllium wide and unfastened with their customers astir however they are investing people's wealth to present existent improvements."
The CCW assessed each h2o company's show connected the fig of complaints it received for each 10,000 households it serves, and the magnitude of effort customers person to enactment successful to get their ailment resolved.
Thames Water and South West Water rated "poor" for some show measures.
David Bird, retail manager astatine Thames, apologised to customers who "have not received the work they should expect".
"We cognize measure clarity has been a peculiar root of frustration, which is wherefore we person launched a programme to redesign them, truthful they are easier to understand," helium said.
Bills for the mean Thames lawsuit roseate by 31% successful 2024, but were a batch smaller this twelvemonth astatine 3.4%.
South West Water said: "We cognize determination is much to bash to amended our customers' experience. We are taking enactment by reducing repetition contacts, resolving issues erstwhile radical interaction america for the archetypal time, and ensuring they person clear, timely communication."
Portsmouth Water and Bristol Water were the lone companies to people "good" successful some metrics, retaining their presumption astatine the apical of the rankings arsenic the sector's champion performers.
Last month, Ofwat approved measure increases for 13 companies to conscionable accrued pressures connected infrastructure and the environment.
Five of those companies — Thames, Severn Trent Water, Southern Water, Wessex Water and South East Water — were already permitted to hike bills successful 2024.
A spokesperson for manufacture assemblage Water UK said: "We recognize expanding bills is ne'er welcome, but the wealth is needed to money captious upgrades to unafraid our h2o supplies, enactment economical maturation and extremity sewage entering our rivers and seas.
The spokesperson said that 94% of complaints are "being dealt with astatine the earliest imaginable signifier without the request for further engagement from the user body".
"The manufacture remains committed to improving connection with customers and showing intelligibly however their wealth is being utilized to present the improvements they expect," the spokesperson added.
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