After continued high water usage, Hamilton has moved to Water Alert Level 3 for the first time in seven years.
The change means garden sprinklers cannot be used, in either residential or commercial properties, and hand-held hosing only is permitted.
The continued increase in water usage since alert level two was put in place has forced council to react said City Waters Manager Maire Porter.
"We've seen a 30 per cent increase in outside water use compared to the same period last year and our water treatment plant yesterday supplied the second-highest daily amount ever to Hamilton," Ms Porter says.
"There has been a sustained level of very high usage, over the past two weeks, which has meant our plant has been operating constantly close to its maximum sustainable production levels. Our average daily usage in the city is around 55 million litres a day – lately we've been pumping 80-85 million litres of quality, treated water every day.