Dubliners will not be allowed to use a hosepipe to wash their car or fill up a paddling pool.
Irish Water has issued a Water Conservation Order for the Greater Dublin Area which comes into effect from today.
Water demand has increased dramatically following the recent spell of hot weather.
The so-called 'hosepipe ban' means that people won't be allowed to use a hosepipe for unnecessary use of water, such as:
The order could be extended beyond the capital, as Irish Water says over 100 different supplies around the country are 'at risk', while 39 are under night-time restrictions.