Work to restore water supplies
Engineers are working to restore the water supply to thousands of homes across the country after the thaw caused mains pipes to burst.
Members of the public have been urged to conserve water and report any leaks to councils.
Keyholders of schools and businesses closed for Christmas were also asked to check their premises for burst pipes.
Problems to supplies have been reported in counties Cork, Galway, Kerry, Kilkenny, Kildare, Laois, Sligo and Westmeath.
Residents across Dublin were warned to expect widespread night-time water restrictions as a record 130 million litres of water were lost in the past two days.
Dublin City Council said that while 554.2 million litres of water has been produced in the past 24 hours, demand was 624.7 million litres.
"If we combine the impact of the last two days there has been a loss of 130 million litres in storage," it said in a statement.
"This is unprecedented and the worst two-day event on record.
"The rapid thaw is having an extremely serious effect.
"Temperatures have changed by almost 25 degrees over three days. We have mobilised all crews to both identify leaks and to deal with burst pipes."