Severn Trent has said water supply issues are affecting Tewkesbury because of a burst pipe.
The loss of water has hit the provider’s customers in the GL19 and GL20 areas of Tewkesbury.
A Severn Trent spokesperson said: "We believe this is being caused by a burst pipe and we’re working as quickly as we can to locate the problem so that we can get it fixed and return everything to normal.
"We know how difficult it is to have no water, especially at this time of day when you’re trying to get ready for work and school, and we’re really sorry for the inconvenience this will be causing.
"We’d like to reassure our customers that we’re doing everything we can to get the water supplies back on as soon as we can."
The supplier added that water is being moved around its network of pipes and also brought into the area using a fleet of tankers.
It is also working to deliver bottled water to the most vulnerable customers in the affected areas.
In October thousands of homes across Cheltenham were left without Severn Trent’s water supply because of a burst pipe.