Manx Utilities says people in Braddan may notice discoloured water tomorrow.
A new mains connection means the water supply on Vicarage Road will be disconnected shortly before midnight.
It'll mean people nearby have no water for up to four hours, and supplies may be discoloured afterwards.
The organisation says the advice is to run the downstairs cold water tap until it clears.
Fuel price hit may last into winter, says government
Further temporary speed limits on TT course
Western homes to be without water tomorrow
Co-Op ordered to hand over evidence in blind worker's tribunal
Who'll be getting meningitis vaccines?
New atlas shows dramatic fall in Island birth rate
Autocar lavishes praise on Island's roads
Super Unleaded hits almost 165p a litre