Are You Included in the Water Overcharging Claim?

Has your water company broken the law and overcharged you? If so, you could be owed compensation.

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Overview

Some UK water companies are accused of overcharging households. Legal experts say these companies underreported their sewage spills and discharges and have been allowed to raise their prices as a result. 

Water companies can often set higher prices if they perform well and have limited pollution incidents. Lawyers claim that, if these companies had reported truthfully, they would not have been allowed to increase prices, and customers might have had lower bills. 

Any household that has paid these water companies for sewerage services (either directly or as part of their rent) could be due compensation. 

Find out if you meet the criteria for this group claim and potentially get a share of any compensation. It only takes a few minutes.

Water overcharging – at a glance

Alleged overcharging

£800 million - £1.5 billion

Households affected

£20 million +

January 2025

What do we know about the water company overcharging claim?

  • The six UK water companies accused of underreporting and overcharging are Anglian Water, Northumbrian Water, Severn Trent, Thames Water, United Utilities and Yorkshire Water. 
  • Professor Carolyn Roberts, an environment and water specialist, has launched a legal case against these companies.
  • Professor Roberts is accusing the water companies of providing misleading information to The Water Services Regulation Authority (Ofwat). 
  • Lawyers argue that the water companies have abused their dominant market position and broken competition law. 
  • The excessive discharge of untreated sewage is also very damaging to the environment. 

Which water companies have been overcharging customers?

The defendants in this case are:

Anglian Water

1 April 2020 to 15 December 2023

Northumbrian Water

1 April 2020 to 12 December 2023

Severn Trent

1 April 2017 to 2 August 2023

Thames Water

1 April 2020 to 8 December 2023

United Utilities

1 April 2020 to 12 December 2023

Yorkshire Water

1 April 2020 to 8 December 2023

You could be included in the claim if you have paid any of these water companies for wastewater services during the periods listed above.

How it works

Check eligibility

Answer a few simple questions to see if you could be included as part of the group claim.

Register for updates

Join the Claim will keep you up to date with any news or further information about the claim.

Visit the official claim site

We will share details of the official claim website, so you can formally register your details.

Latest updates on the water company overcharging claim 

  • January 2025

     In early 2025, the Competition Appeal Tribunal declined to approve the group action against the UK water companies. But that doesn’t mean the fight for justice is finished. This case could return, and if it does, we’ll be ready. *Register your interest* to stay informed. We’ll keep you updated if the claim moves forward, so you don’t miss your chance to take part

  • Sept 2024 

    A hearing took place. Professor Roberts asked the hearing to approve her as the Class Representative in these claims. If approved, anyone affected by this claim will not need to sign up. Instead, they will automatically be included in the claim unless they choose to opt out. 

  • Dec 2023 

    MoneySaving Expert reported that millions of UK bill payers could get payouts if the claims against the water companies succeed. 

  • Aug 2023

    Six of the UK’s biggest water firms face legal action over claims they underreported pollution and overcharged customers. 

  • 2022 

    According to the BBC, raw sewage was pumped into rivers and seas for 1.75 million hours - an average of 825 times per day. 

We’ll provide more updates on water company overcharging as they occur. 

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Are you included in the water company overcharging claim

Find out if you meet the criteria for this group claim and potentially get a share of any compensation. It only takes a few minutes.

Water company overcharging FAQs

Six UK water companies are accused of underreporting the number of pollution incidents experienced to the Environment Agency and Ofwat. These companies are Anglian Water, Northumbrian Water, Severn Trent, Thames Water, United Utilities and Yorkshire Water. By underreporting their sewage spills and discharges, Professor Carolyn Roberts, a leading environmental and water consultant, believes these companies were ‘rewarded’ and allowed to charge consumers more.

Professor Roberts has applied to be the ‘class representative’ in these claims. If the Competition Appeal Tribunal approves this application, she will lead the claims on behalf of everyone affected by water overcharging (unless they choose to opt out).

Six separate claims are being brought against six different water companies (the defendants). These companies are Anglian Water, Northumbrian Water, Severn Trent, Thames Water, United Utilities and Yorkshire Water.

Find out instantly with our easy-to-use eligibility checker! Even if you are not currently eligible, similar claims could arise against other water firms in the future. So you should still sign up for updates.

We cannot say exactly how much compensation you might get if the water companies are ordered to pay compensation. Each claim is based on its merits and your solicitor will work to get the compensation owed to you. Millions of UK bill payers could get payouts if the claims against the water companies succeed and the combined total sum being sought is hundreds of millions of pounds.

This is an opt-out claim. This means, if you are eligible, you are automatically included in the group action, and could be due compensation.

However, you’ll usually need to register your details on the official claim site to receive any money you’re owed.

In other words, even though you’re automatically included unless you opt out, you may not get your compensation unless you register on the official claim site.

A group action claim allows people affected by the same issue to take action together. This strength in numbers helps stand up to big organisations. 

No. Join the Claim is not a law firm. We explain what the ruling means, help you understand eligibility and signpost you to the official site.

Opt-out claims work differently to other types of legal action. If you are eligible, you are automatically included in the case unless you choose to opt out. There are no costs to be part of the claim, win or lose.

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Clifford
Very easy to sign up, hope its sorted soon
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Very easy and quick to complete the claim Everything was explained well and fees payable in etc were made very clear
Peter
So easy to sign up for the claim
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