Severn Trent Water says it "can't just yet give a time" for repairs on a Cheltenham water main burst this morning.
The 24-inch main fractured under a field in Brookfield Road, Churchdown.
Severn Trent Water says it has restored supplies to some customers but supplies may be off or at low pressure for those in the south-west part of the town.
"We’d like to reassure our customers that we’re doing everything we can to get the water supplies back on and some customers are now starting to see their water returning. We know there are still customers with no water, and some who are seeing it coming and going as we're working to restore the supply for everyone."
"We're also working on setting up sites to hand out bottled water to those affected and we'll be able to share more details once we have everything in place.
"We've contacted our vulnerable customers to make sure they're ok and have everything they need and are delivering bottled to them.
"We know this isn't a great situation, especially as we can't just yet give a time for when this will all be sorted, but we are doing our best and we'll update everyone once we have more information."
Some customers in the Leckhampton area are still having a problem this morning after a water main burst in Cheltenham.
Thousands of people have been affected by a burst water main in Cheltenham. At least 18 schools have been closed.