Severn Trent has been spared a fine by the industry regulator Ofwat despite what the watchdog described as “serious and unacceptable breaches” in the company’s handling of wastewater and sewage. The FTSE 100 water supplier, which serves over 8 million people across England and Wales, was found to have failed to effectively provide drainage and manage its sewer contents during the period under investigation.
Ofwat’s industry-wide investigation
Ofwat has been conducting a sector-wide investigation into how wastewater and sewage networks are managed. Severn Trent is the eighth case completed in this probe, which has so far resulted in fines and enforcement packages exceeding £300 million. In the previous seven cases, Ofwat imposed fines ranging from £11 million to £104 million, with the largest penalty levied against Thames Water in May 2024 for wastewater failures.
Unlike the other cases, Ofwat noted that Severn Trent proactively identified problems in its network and began addressing them before the enforcement case was opened in July 2024. The company now has proper systems in place and has invested £98 million of shareholder funds to improve infrastructure. This investment contributed to a 41% reduction in spills from each storm overflow in 2025 compared to 2024, despite heavier rainfall in some regions.
Regulator’s response
Lynn Parker, Ofwat’s senior director for enforcement, stated: “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 cooperating openly with the regulator. The 41% reduction in spills we are now seeing is what genuine accountability looks like in practice.” She added: “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.”
Shares in Severn Trent fell nearly 2% on Wednesday following the announcement. Ofwat is still investigating United Utilities and Hafren Dyfrdwy, a Welsh provider owned by Severn Trent, as part of its sector-wide probe.
Company’s acceptance and future plans
James Jesic, chief executive of Severn Trent, 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.”
Separately, The Guardian reported that Severn Trent had doubled the size of Jesic’s long-term reward scheme to up to £3.1 million, potentially allowing him to earn up to £4.8 million in a single year including salary, bonus, and benefits. Severn Trent defended the policy, stating it follows Ofwat’s rules and is funded by shareholders, not customer bills.
