Water supplies have been restored after a burst pipe left 100,000 properties in London with little or no water.
Schools were closed and hospital appointments cancelled on Wednesday following a fault at Hampton pumping station.
Thames Water said its customers water supply was back although a temporary pump remains in operation.
Some customers will experience lower pressure, it added.
The TW, KT and W postcodes had been affected.
A spokesman for Thames Water said: “We continued working through the night to fix the burst pipe at Hampton treatment works as well as clear any trapped air from our pipes.
“As we were able to bypass the burst and add extra water into our network, water pressure has improved.”
It added that while the repair work is finished there may be “short periods of low water pressure, especially at peak times this morning”.
A number of bottled water stations remain in place for those who still have problems.
Schools have been advised to reopen.
Thirty schools and two children’s centres in Richmond and Hounslow closed on Wednesday, including Trafalgar Junior School in Twickenham, which was left without flushing toilets and washing facilities in the kitchen.
Surrey County Council also confirmed six schools had closed in Sunbury-on-Thames.
Hounslow and Richmond Community Healthcare NHS Trust said all planned clinics and sessions at Teddington Memorial Hospital and Teddington Health and Social Care Centre had been cancelled.
Thames Water apologised for the inconvenience caused and pledged to investigate the cause of the burst pipe “so we can take steps to stop it happening again”
There were 26,082 burst pipes between 2015 and February 2019.
Labour’s Leonie Cooper said London’s water supply was under pressure due to the growing population and the city’s aging Victorian pipes.