Residents in Redbourn and St Albans were left without water for a whole morning on one of the hottest days of the year.
Redbourn Infant and Nursery School had to close at 1pm on Wednesday, July 5 as it had no water supply whatsoever.
Water supplier Affinity Water advised people to store up water for drinking and avoid using their dishwashers until they repaired the problem.
An Affinity Water spokesman said: “We are sorry for any inconvenience caused to customers in St Albans who may have experienced poor pressure.
“Following a successful restart of a booster at our Redbourn pumping station and the operation of additional valves, all customers in the area should now have a supply at normal pressure.
“We would like to thank customers for their patience during this time.”
In an update on their website during the afternoon, the company warned customers their water may be discoloured but that it would not be harmful.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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