From today until the end of March, Masterton and Tauera water users will only be allowed to use sprinklers on alternate days - even-numbered houses on even-numbered days and vice versa.
South Wairarapa District Council infrastructure and services manager Mark Allingham said although the council has year-round water restrictions, it was not anticipating water shortages.
"It's good environmental practice and having everyone used to doing it for a period of time is getting into good habits," he said.
Since water metering was introduced in 2007 water use had been reducing, leak detection had further helped the savings and a couple of wet seasons meant water levels were healthy.
In South Wairarapa hoses, sprinklers and irrigation will be allowed on alternate days - for even numbered properties on event numbered days, and odd numbered properties on odd numbered days.