An estimated 300 - 400 householders in the north and west of Northern Ireland are continuing to experience interruptions to their water supply, NI Water has said.
The areas currently affected are Omagh, Killyclogher, Castlederg, Carrickmore Ballygawley, Gortin, Feeny, L'Derry, Ballymena, Ballymoney, Enniskillen, and Dungannon.
Since Sunday the company has taken 8000 calls.
NI Water said that water levels in a number of Service Reservoirs have increased overnight which has reduced the number of customers without supply.
Bulk tankering of water supplies to Service Reservoirs in the affected areas is continuing.
"Our staff have been on the ground in the affected areas throughout the incident working around the clock to help restore customer supplies," the company said.
"Engineers have also been taken off other non-critical duties and drafted in to deal with the incident."
"Alternative water supplies continue to be provided to customers without water as a result of burst water mains and 'Priority Customers,' subject to road conditions."
NI Water warned that with a thaw expected to arrive in the next few days there may be an increase in the number of burst watermains and leaks on private pipework.
They are asking customers to act on the following advice:
- Customers should not run taps unnecessarily.
- If you do experience a burst on your property, please turn water off immediately at the stop valve and take action to have the burst repaired
- Protect your pipes - place a small heater near pipes which are liable to freeze and open your loft to allow warm air to circulate.
If you notice any bursts or 'runs of water' please report these immediately to NI Water by calling 08457 440088.
© UTV News