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Highlights

  • Thames Water fined a total of GBP 122.7 million by Ofwat for wastewater management and dividend payment breaches.
  • GBP 104.5 million penalty relates to failures in operating and maintaining wastewater infrastructure.
  • Ofwat imposes enforcement order and cash lock-up, restricting future dividend payments without regulatory approval.

Thames Water Utilities Limited has been fined nearly GBP 123 million by the UK water regulator Ofwat following two separate investigations into the company’s wastewater operations and dividend payments. The penalties represent the largest enforcement action ever taken by Ofwat.

The GBP 104.5 million fine stems from breaches related to the operation, maintenance, and management of Thames Water’s wastewater treatment facilities and sewerage network. A further GBP 18.2 million penalty has been imposed in relation to failures concerning dividend distribution practices that were not aligned with the company's performance for customers or the environment. Ofwat has also issued an enforcement order requiring the company to implement corrective measures to address operational shortcomings and to ensure future compliance with its legal obligations.

The main investigation into wastewater practices, launched as part of a broader sector-wide review, found that Thames Water failed to build, maintain, and operate sufficient infrastructure to meet environmental and legal standards. The findings concluded that the company’s operational deficiencies had a significant negative impact on the environment and failed to meet its obligations to customers.

The enforcement order mandates that Thames Water address these shortcomings and take steps to ensure improved operational management of its wastewater systems. According to Ofwat, the company did not provide an adequate redress plan that would compensate for environmental harm, prompting the regulator to finalise the financial penalty and enforce compliance measures.

Ofwat Chief Executive David Black stated that the case “uncovered a series of failures” and added that the company now has “a clear opportunity to break with the past” as it seeks new investors and undergoes organisational changes.

A second investigation focused on dividend payments made by Thames Water despite its operational and environmental performance. Ofwat found that the company breached regulatory requirements by issuing interim dividends totalling GBP 37.5 million in October 2023 and further payments amounting to GBP 131.3 million in March 2024. Although no cash exited the business in the latter transaction, Ofwat determined that it represented an “extraction of value.”

This is the first time Ofwat has used new enforcement powers to penalise a company over dividend policies misaligned with performance. The regulator confirmed that an adjustment will be made in future price controls to ensure customers are not financially disadvantaged.