Auckland is likely to be unaffected by predicted water shortages in Waikato and the central North Island over summer, Watercare says.
Earlier this week the Hamilton City Council and Waipa District Council warned low inflow of water into Lake Taupō, the driest year on record and La Niña climate system in the Pacific could result in water restrictions being put in place across the mid and upper North Island, south of the super city.
"If Waikato River levels drop significantly due to low levels in Lake Taupō, it could limit how much water we can physically take from the river during summer this year," said Hamilton City Council city waters manager Maire Porter.
"NIWA has advised that we're in for a hot and humid summer, and with Lake Taupō's water levels being below normal for much of the winter period affecting the levels in the Waikato River and how much we can take for Cambridge and surrounds," said Waipā District Council water services manager Martin Mould.
Auckland has been in its worst drought this year since the early 1990s, with restrictions in place for the past six months. Water storage lake levels fell below 50 percent earlier this year.
A spokesperson for Watercare, the council-controlled organisation which looks after the city's water, said they weren't concerned at this stage, with flows from the Waikato River - which supplies about a third of the city's water - above average at this stage, and possibly above-average rainfall forecast over summer.
"In Auckland, we have a variety of water sources: the Waikato River, water storage dams and underground aquifers," a spokesperson told Newshub.
"We're confident we will be able to meet the city's water demand over the summer - particularly if people continue to save water."
In 1994, Auckland's water storage lakes dropped to 32 percent, but by the end of the year were back up to 95 percent thanks to savings made by the city's residents and a wet second half of the year.
La Niña weather systems tend to drop heavy rain on the country's north and east, while possibly leaving the rest of the country in drought. Everywhere is typically warmer than usual.
The city's dams are currently 72.4 percent full - well below the usual 91.6 percent at this time of year, but significantly fuller than they were in May, when restrictions were put in place.
"Over winter, in response to our water savings campaign and restrictions, Auckland’s saved a phenomenal 6 billion litres of water," Watercare said.
"We hope the habits they established continue once the weather heats up."