Manx Utilities says it's spending half a million pounds replacing two and a half miles of water mains in the south of the Island.
The main runs from Ballaglonney Farm to Ballaquinney Farm and will take 30 weeks to replace.
The organisation says the existing main was originally laid in 1967 and delivers water to more than 3,800 people.
Manx Utilities says the work may occasionally affect some roads but residents will keep access to their properties.
£66,000-a-year immigration health surcharge manager needed
Out-of-town stores like planned Iceland threaten other shops, says councillor
Isle of Gelato opens in Laxey tomorrow!
Councillors reject card-only Bottleneck Car Park
Safety warning for plantations during gales
Gales could mean bus disruption later
Xmas parking on prom to close early tonight
Respect bus and taxi drivers after Xmas parties, say police