Water supplies are back to normal for families in Hyndburn following a burst pipe.
United Utilities engineers have worked since Tuesday night to get water back to taps in homes, schools and businesses in Accrington, Oswaldtwistle and Clayton-le-Moors.
Thousands of homes had either been cut off or left with low water pressure after a pipe on Burnley Road in Altham burst on Tuesday at 11pm.
Seven schools also had to shut during the incident.
Workers have brought an alternative large water main into service to feed water into the area while repairs continue on the burst 36 inch pipe.
Water bowsers had been setup in locations across the affected areas, and more than 20,000 bottles of water handed out to people.
Scott Beard, United Utilities water network manager, said: "We're very glad that families are now able to use their water as usual.
"It has been a very frustrating couple of days for households who have been disrupted, and we'd like to thank people for bearing with us. We know that many residents were helping each other out, and looking after their more vulnerable neighbours.
"This was a complicated engineering task, requiring our teams to work around the clock to get the supply issue resolved."
It is thought work on the damaged pipe will be completed by the end of the weekend.