We're also being asked to take shorter showers.
A ban on the use of domestic hosepipes will come into effect across the country from midnight tonight.
Due to the recent dry weather, Irish Water is asking people to put their hosepipes away and to avoid using paddling pools and washing cars.
Using hosepipes for cleaning and leisure activities is also banned.
Irish Water said the move was necessary as a hosepipe turned on for just one hour used up as much water as an average family on a whole day.
”Irish Water will continue to analyse water consumption levels nationally while the National Water Conservation Order is in place," Niall Gleeson, Irish Water Managing Director said.
"It is essential that our water supply is protected if we are to avoid restrictions and outages over the coming weeks and months.
“During this time we are supporting and advising our commercial large water users on their conservation efforts and we are grateful for all of the measures they have taken so far. We are also working with our Local Authority partners and others to ramp up leak detection and repair, particularly in water stressed areas.
“There are lots of helpful tips for conserving water on water.ie but the key messages are to leave the hose and the pressure washer in the shed, don’t use paddling pools, reuse household water for the garden, and take shorter showers.
"Safeguarding the supply of water is essential at this time when handwashing and hygiene is of critical importance. We are calling on everyone to play their part.”
Last month was the driest May since 1850, while the Greater Dublin Area had its driest spring on record and also one of its warmest.
