Tens of thousands of households across the South East have been told to use as little water as possible, after rising temperatures caused burst pipes.
Many homes have lost their mains supply, and are having to use bottled water instead.
South East Water says around thirteen thousand homes are affected, and engineers are working round the clock to fix the leaks.
Schools have been forced to close, while farmers are struggling to make sure their livestock have enough to drink.
Malcolm Shaw has been finding out how one community in Sussex has been coping.