Up to 10,000 householders suffered disruption to their water supplies yesterday.
Late on Sunday night Northern Ireland Water blamed the ongoing industrial action by workers angry about changes to their pension arrangements.
Customers affected were in Enniskillen, Lisnaskea, Irvinestown, Fivemiletown, Maguiresbridge, Augher, Clogher, Sixmilecross and Ballygawley.
Northern Ireland Water said that it was trying to resolve the industrial dispute and added: “The company would stress once more the key demand that pension reform be delayed is not within its gift to provide...
“Customers can visit niwater.com for further advice and updates or call our contact centre on 08457 440088.”