Severn Trent Water has been found in breach of regulations concerning its wastewater and sewage management, yet will avoid a financial penalty after regulator Ofwat acknowledged its "genuine accountability" in addressing the issues.
The water watchdog, currently investigating how wastewater and sewage networks are managed across the industry, determined that Severn Trent, which serves over eight million people in England and Wales, failed in its duties to effectively provide drainage and deal with the contents of its sewers.
Ofwat noted that the company previously lacked the necessary systems and processes to monitor and maintain its network.
This marks the eighth case concluded by Ofwat in its industry-wide wastewater investigation, an initiative that has already led to fines and enforcement packages totalling more than £300 million.
Among these was a substantial £104.5 million fine levied against Thames Water for its own wastewater failures.
Ofwat highlighted that, unlike the previous seven cases, Severn Trent proactively identified problems in its own network and began dealing with them before Ofwat opened a case in July 2024.
It now has the right processes in place and has invested £98 million of shareholder funds into improving its infrastructure, Ofwat said.
This has helped lead to a 41 per cent reduction in spills from each storm overflow in 2025, compared with 2024, despite experiencing heavier rainfall than some other regions.
Lynn Parker, Ofwat’s senior director for enforcement, said: “Our investigation found serious and unacceptable breaches by Severn Trent Water – that is not in question and the company accepts it.
“But their response to those failures sets a standard we expect from all companies: identifying the problem, proactively investing to fix it and co-operating openly with the regulator.
“The 41 per cent reduction in spills we are now seeing is what genuine accountability looks like in practice.
“We will always act where companies fail their customers and the environment.
“But we will also be clear, publicly, when a company does the right thing.”
Ofwat has two cases that are still open in its wider investigation.
James Jesic, Severn Trent’s chief executive, said: “We accept Ofwat’s findings relating to issues that we proactively identified and began addressing these before the enforcement case was opened.
“Our investment programme in spills reduction continues across our region at pace with the strength of our whole organisation and supply chain behind it.
“We still have work to do and remain absolutely focused on delivering further improvements for our customers and the environment.”
