WATER levels are at an all-time low in the region by the worryingly low levels at Startops Reservoir near Marsworth.
The Environment Agency has now declared the South East region to be in drought, and water boards Thames Water and Anglian Water have warned people to save water as a result.
Richard Aylard, sustainability director for Thames Water, said: “The fact that we already have a drought in London and the Thames Valley will come as a surprise to many of our customers.
“Well, it may not seem like it, but we have had one of the driest two-year periods since records began in 1884.
“Our drought plan has recently been updated and we are working closely with the Environment Agency and neighbouring companies to ensure our 8.8m customers continue to receive the essential service this summer. “None of us can control the weather, but we can make a real difference by using less water.”