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Auckland water supply unaffected by rains

NZ Newswire logoNZ Newswire 27/03/2017

While Sunday's downpour drenched fans at English songstress Adele's final concert, it did not cause problems for Auckland's water supply.

City supplier Watercare had been concerned another heavy downpour would send more silt and debris into its Ardmore Water Treatment Plant and add to the city's existing water shortage.

Run-off from heavy rain and floods between March 7 and 12 had already clogged the plant with silt and reduced it to running at half its normal capacity.

This led Watercare to urge residents to each cut their water usage by 20L per day.

However, Watercare chief executive Raveen Jaduram is delighted the plant's operation remained stable during Sunday's downpour and was not affected by silt.

He said it was also great news that Auckland residents had simultaneously cut their water use.

With total water consumption across the city at 385 million litres last week, it was well below Watercare's target of a maximum of 400 million litres.

"Anecdotally, we know that for many families, waterwise behaviours are becoming a way of life and could continue long after the current water situation is resolved," Mr Jaduram said.

"That's [a] great bonus."

Watercare is still assessing how much silt made its way into water storage dams in the Hunua Ranges and warned more rain was forecast for the next few days.

However, there is no indication yet that the cyclone about to hit Queensland will bring heavy rains to New Zealand, it said.

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