Some homes across several villages in north Norfolk have been left with little or no water due to a problem on the network.
Anglian Water confirmed the loss of supply late on Tuesday morning.
The utility firm was made aware of the problem shortly after 11am.
It is primarily affecting homes in Wells, Holkham, Wighton and Egmere, though not everyone living in these areas will be affected.
Week-ahead---weather-forecast-19-24-July-2021 (2)
Some people may have low water pressure, while other may find they have no running water at all.
Anglian Water is investigating the cause of the supply issue.
It comes on a day when temperatures in the area stand at around 26C, after a similar heat over the weekend.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here