Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, pursuant to the Answer of 7 March 2025 to Question 35545 on Environment Protection: Henley-on-Thames, if he will hold discussions with Ofwat on the adequacy of the progress on the improvement scheme at Horton-cum-Studley sewage treatment by Thames Water.

My officials and I have regular conversations with Ofwat and other regulators, to discuss a range of activities, including delivery by water companies.

Ahead of Price Review 24 (PR24), funding investment works through 2025 – 2030, the Horton-cum-Studley site has had further works identified to meet the government’s targets by reducing spills to no more than 10 per year and causing no adverse ecological impact. The exact delivery date of these works is officially to be confirmed.

In February 2025 Ofwat opened an enforcement case into Thames Water to investigate whether its delayed delivery of environmental improvements schemes has meant the company has breached its obligations. The focus of that investigation is schemes that were intended to be delivered in the 2020-25 period. Ofwat's investigation will keep under review if there is any further action to take in relation to the delivery of schemes planned for the PR24 period (2025-30).