Despite heavy downpours and flooding in some parts of the country, water restrictions and the hosepipe ban are to remain in place for weeks.
Irish Water is now describing the situation as “critical” and extended the national hosepipe ban until August 31.
Meanwhile, water restrictions will continue in the Greater Dublin Area for another two weeks.
That is despite Met Éireann issuing a yellow warning as heavy downpours are due to sweep the country and up to 44mm of rain is expected.
Yesterday saw torrential rain in parts of Munster and flooding in the west of the country.
The yellow warning – in place until 9am today – affects Leinster, Co Monaghan, Co Donegal, Co Cavan and Co Waterford.
Showers will continue in the north for much of the day and rainfall will spread across the country overnight with particularly heavy rain possible in the east and south-east.
However, several weeks of rain would be needed to restore water supplies to normal levels.
Only 50mm of rainfall was recorded at the Phoenix Park in Dublin since May.
Irish Water is concerned about the low level of water in the Poulaphouca Reservoir, one of the three main reservoirs supplying Dublin.
There are also concerns for water supplies when schools and colleges reopen at the end of August as these are heavy users of the supply.
The utility’s board met yesterday and reviewed the latest data on water usage and the condition of raw water sources across the country. This led to the extension in restriction measures.