Dublin will have nighttime water restrictions from early next week.
Irish Water says it has made the decision to protect future supply and avoid widespread outages this autumn.
The company's Kate Gannon says it will announce details today on where the restrictions will be and for how long.
She said: "Restrictions will happen in the Greater Dublin area, it is likely they will start from next week.
"Our operations teams are looking at how that would be rolled out to try to maximise the amount of water that can be conserved while minimising the impact on homes and business in the area."