Mon, Feb 02, 2026
Text Size
Tuesday, 18 February 2025 20:26

Ofwat Final Determination - Wessex Water appeals to Competition & Markets Authority

Wessex Water has today asked the Competition and Markets Authority (CMA) to review Ofwat’s Final Determination setting how much the company can invest in vital water and sewerage improvements over the next five years.

Wessex Water Logo stacked

The regulator’s FD on Wessex Water’s AMP8 business plan allowed for £4.2 billion of total expenditure – £850 million short of what the company’s own calculations have shown are required to meet its obligations, customer expectations, and support growth in the region.

Wessex Water proposed to almost double its investment programme over the next five-year period with more than a quarter of the investment being used to remove nutrients from treated wastewater discharges so housebuilding and growth can continue in the Wessex Water region, while protecting the water environment.

The company’s Chief Executive, Ruth Jefferson, said:

“We’ve spent a lot of time listening to customers’ thoughts and concerns about how we can help the environment, protect rivers and beaches and make sure there is enough water in the pipes for generations to come.

“We agree that there are improvements to be made, which means upgrading and building new infrastructure as well as harnessing nature to safeguard water quality. We don’t believe Ofwat’s final determination will allow us to deliver what our customers have asked for.”

Wessex Water estimates that the additional allowance it is requesting would result in average customer bill increases of 29% between 2025 and 2030, adding £12 to monthly bills by 2030 before inflation, compared with the 21% (£9 on monthly bills) increase allowed by Ofwat.

News Showcase

Sign up to receive the Waterbriefing newsletter:


Watch

Click here for more...

Login / Register




Forgot login?

New Account Registrations

To register for a new account with Waterbriefing, please contact us via email at waterbriefing@imsbis.org

Existing waterbriefing users - log into the new website using your original username and the new password 'waterbriefing'. You can then change your password once logged in.

Advertise with Waterbriefing

WaterBriefing is the UK’s leading online daily dedicated news and intelligence service for business professionals in the water sector – covering both UK and international issues. Advertise with us for an unrivalled opportunity to place your message in front of key influencers, decision makers and purchasers.

Find out more

About Waterbriefing

Water Briefing is an information service, delivering daily news, company data and product information straight to the desks of purchasers, users and specifiers of equipment and services in the UK water and wastewater industry.


Find out more