Nearly 150 people are currently without running water in Kings Langley.
Affinity Water is currently trying to repair a burst water main in Hempstead Road and are warning that people may be without water until 8pm.
Despite not knowing the exact amount of people affected by this, the water company are estimating that up to 150 people could be affected.
Kevin Barton, external communications executive at Affinity Water, said: "We would like to apologise for any inconvenience caused to customers who may have experienced a disruption in their supply during essential works on a mains pipe on Hempstead Road, Kings Langley.
"Affinity Water technicians are currently onsite and we anticipate supplies to be restored by 8pm.
"We would like to thank our customers for their patience whilst we carry out these essential works to continue to provide them with a high quality service."