WATER tankers were today being sent into Dublin areas without water because of burst mains.
Overnight, there were restrictions on supply or loss of water to many areas, including Ballyboden, Slieveblooom, Blackhorse Bridge, Navan Road, Mespil Road, Anglesea Road, Rialto Bridge, Merrion Gates, Belcamp, Clarehall, Shanliss, Rathlin, Finglas, Summerhill, Christchurch, Brunswick St and Sillogue Tower systems.
Dublin City Council also warned homeowners that bogus callers may use the current water problems to gain access to houses.
"If a member of Dublin City Council calls to a property, they will always carry and produce identification," the council said.
"If the caller asks you to check the flow of water at the taps, close the door fully while you do so. If you are in any doubt, do not allow access."
Property owners were also urged to check their premises for water leaks.
It was particularly important for premises left unattended since the weekend and to have any leaks repaired as quickly as possible, the Department of the Environment said.
The public is also being asked to help local authorities in identifying leaks by reporting any evidence of leaks on public mains.
Group water schemes served by local authority supplies should also check their system for leaks, it said.
Dublin City Council, which has again introduced night-time supply restriction (details on www.dublincity.ie) said people can assist by conserving water.
People should report any area where water is running or rising to Water Services Division, 01-222 0600; emergency number 01 679 6186 (outside office hours only) or email email@example.com.
Many residents have been without water since the thaw started on St Stephen's Day.
Fingal County Council said that today there would be restricted supplies to Malahide, Portmarnock, Balbriggan and Balrothery from 6pm to 10am, with similar restrictions tomorrow night in Dublin 15 areas and parts of Swords.
Dun Laoghaire Rathdown County Council said updates on restrictions will be posted on the Council's blog and on Aertel page 630.
South Dublin County Council said there was an ongoing need to cut water consumption by 10pc throughout the region.