How local councils are coping
Dublin City Council: Restrictions and widespread cut-offs until midday today as many schools and businesses are still closed.
Fingal: Reservoirs remain at critical levels. Supply restricted to areas including Balbriggan and the Naul.
Dun Laoghaire-Rathdown: Cut-offs applied from 6pm yesterday to midday today. Water pressure reduced as crews work to fix pumps serving a number of areas.
South Dublin County Council: Overnight restrictions remained in place, as crews also repaired burst mains on Firhouse Road.
Carlow: Major supply problems, with levels in the Browneshill reservoir too low to fully meet demands. Supply was being cut off to some areas overnight.
Cavan: Some tankers provided by the county council ran dry.
Clare: Widespread shut-offs, with restrictions in Cratloe expected for up to eight days.
Cork: Virtually all areas of the city and county impacted, with an estimated 30,000 to 50,000 homes affected by cut-offs or restrictions. Worst hit were areas of Midleton, Mallow, Fermoy, Macroom, Doneraile, Kanturk, Newmarket, Bantry, Glengarriff and Rosscarbery, as well as Cork city.
Fermoy residents have been warned to expect restrictions for at least another 72 hours.
Donegal: Restrictions remain in place in the Glenties area, Ballyshannon, Bundoran, Stranorlar and parts of Letterkenny.
Galway: Up to 80,000 households throughout the city and county hit by water shortages. Night-time restrictions in several areas.
Kerry: Supply was cut off to many areas, including Tralee, until 8am today. In west Kerry, supplies were good, while further north, Castleisland and Listowel had restrictions.
Kildare: Conservation measures expected for several more days. Pressure has been reduced in many areas overnight.
Kilkenny: Householders urged to conserve water as pressure was low in many areas.
Laois: Major disruption, particularly in Portlaoise, Portarlington and Mountmellick.
Leitrim: Reservoir levels are critically low, with supplies turned off at night-time.
Limerick: Disruption continues throughout the county, with regular night-time restrictions.
Longford: Levels in the Knockahaw Reservoir were continuing to fall yesterday. Supply to Longford town may have to be shut off.
Louth: Repair crews are continuing to work in areas including Ardee, Drogheda and Dunleer. In Dundalk, around 40pc of services are restored.
Mayo: Overnight cut-offs were in place for Achill, Ballina, Cong, Kiltimagh, Swinford and Westport.
Meath: Supplies maintained to all major centres, but problems in areas including Navan, Dunshaughlin and Ashbourne.
Monaghan: Temporary pipe supplies were provided throughout the county.
Offaly: Water may be shut off during today to aid repair work and water tankers have been supplied as crews work to fix the supply in Tullamore.
Roscommon: Restrictions and possible shut-downs will continue.
Sligo: Restrictions may be required over the coming days.
Tipperary: Tankers in many areas, including Clonmel, with overnight shut-offs.
Waterford: Shut-downs will continue, including overnight restrictions for Tramore town.
Westmeath: Reservoir levels critically low, despite overnight shut-offs of supply.
Wexford: Overnight shut-offs will continue in areas including Enniscorthy, New Ross, Kilmuckridge and Ferns.
Wicklow: Severe water disruptions, with overnight shut-offs in many areas.