A major pipe burst has left thousands of people in south and west London without running water, or with limited supply.
Several schools were forced to close, while Hampton Court Palace is also said to have been affected by ‘water issues’, but remains open.
Teddington, Richmond and Twickenham are among the areas hit.
Trafalgar Junior School in Twickenham sent pupils home after being left without flushing toilets. Sacred Heart in Teddington was also among the schools affected.
Teddington Memorial Hospital and Teddington Health & Social Care centre cancelled all their planned clinics and sessions.
Engineers from Thames Water are investigating the incident at their waterworks in Hampton.
“We’re sorry to anyone whose water supply has been affected by a burst on a large pipe at our water works in Hampton,” Thames Water said.
“A team of engineers are there investigating and we have more experts planning how to get water back on for our customers as soon as we possibly can.”
The water supplier added that it would make bottled water available across affected areas if the issue is not resolved “within the next few hours”.
Mayor of London Sadiq Khan said it was “unacceptable that so many people are left without water for several hours with little or no information on when supplies will be restored”.
He expects Thames Water to compensate those affected, he added.