Statement from the Council Leader: South East Strategic Reservoir Option (SESRO) spiralling costs.

Published Thursday 14 August 2025

Cllr Bethia Thomas, Leader of Vale of White Horse District Council, said: “The costs of SESRO seem to be spiralling. We have continually urged water providers to consider exploring all the alternative and more cost-effective solutions seriously before committing to this reservoir. I reiterate that call today given the revelation this week that Thames Water’s reservoir faces an eye watering increase in costs – potentially up to £7.5bn!

“Water suppliers should instead be focusing on fast-tracking less disruptive alternatives by fixing leaks, educating us all to reduce our water consumption and by exploring the use of water transfers.

“Many concerns remain around the size of the proposed scheme, its environmental impact and significant (growing) financial and carbon costs, as well as the potential for increased flood risk in local watercourses.

“We remain opposed to this proposal, and we will continue to urge water providers, regulators and government to listen to local voices and reject these plans. We will continue to do everything we can within our power to ensure that the voice of our community is listened to.”