Water supply and drought update
Increasing risk of drought
The Environment Agency has placed the Thames Area into the Prolonged Dry Weather category. This means there is a heightened concern and risk of drought.
June 2025 was England's warmest on record, and we also had a very dry spring. Ongoing dry weather and increased customer demand are impacting Thames Valley water supplies.
Unless the situation changes significantly, we'll need to put in place usage restrictions. This includes a hosepipe ban, to ensure taps keep running for customers’ essential use.
We're doing everything we can behind the scenes to protect supplies. This includes fixing leaks, managing our network, and preparing for all scenarios. Thank you for continuing to use water wisely - every small action really helps.
What we're doing: Monitoring and managing supply
Water levels are under pressure.
When temperatures rise, we all use more water. Whether it’s for cooling off, gardening, or enjoying time outdoors. But this extra demand adds pressure to the network. We need your help to keep water flowing for everyone and to help protect our rivers.
Our reservoir levels are currently at 94% (May data). Groundwater levels are normal for this time of year across most areas. River flows are below average, and the forecast suggests dry weather will continue.
We’re working 24/7 to treat and supply water, but we’re nearly at capacity in some areas. Demand is rising quickly, which can lead to slower refilling of tanks. We’re keeping a close watch on the situation and will keep you updated over the summer.
Current water restrictions
Where our water comes from
Most of our water comes from local rivers and underground sources. Because we live in a water-scarce region, we monitor these carefully.
