A burst water main has left about 5,000 customers across Hereford experiencing problems with their supplies.
Five schools were forced to close after damage to a pipe on Hoarwithy Road at 01:00 GMT, which also caused localised flooding.
Welsh Water apologised for the disruption and said the supply had now been fixed.
"Customers should start to see their supplies restored in to this evening and overnight," a spokesman added.
Affected properties are in the Belmont, Newton Farm, Redhill and Whitecross, Kings Acre, Putson, Hinton and Hunderton areas to the south of the city.
Many customers discovered discoloured water and a lack of supply when they woke up.
"It was fine before I went to bed, woke up this morning, no coffee, not impressed," local resident Linda told the BBC. "I only found out through Facebook."
Sharon Taylor said she received a phone call from the company at 02:30, but had lost a day's pay because her car was stuck behind the cordon and she could not get to work.
The company has said that emergency repairs were "challenging" because of a high-voltage electricity cable near to the damaged main.
Riverside Primary, Marlbrook Primary, St Martin's Primary, Hereford Academy key stage three classes and Blackmarston Schools were all closed to pupils today.
Herefordshire Council urged drivers not to try and drive through the floodwater.
JUNCTION of Windsor Road is flooded up to the Pastures as a result of the water main burst. Please do not ignore road closures, you cannot see the condition of any submerged road or if debris is present. https://t.co/Qp52AyFmTp pic.twitter.com/S5aLCUUkZw— HerefordHighways (@HfdsStreets) November 7, 2019
Bottle water collection points were set up by Welsh Water and the company said it had also delivered bottles to vulnerable customers.
It advised people to check its social media pages for news.
Follow BBC West Midlands on Facebook, on Twitter, and sign up for local news updates direct to your phone.