Auckland households face water restrictions until the end of the month despite hitting savings targets.
Aucklanders' daily water consumption has dropped to 382 million litres, well within the necessary range of 400 million litres or fewer.
Watercare congratulated residents but warned that if savings did not continue, partially treated water might need to be released into the system and then people would have to boil water.
Watercare said it was going to take weeks for silt in the Hunua dams to settle after last week's devastating storms sent torrents of dirty water into the system. Until then, the region's largest water treatment plant at Ardmore remained under pressure.
Water clarity at the plant was still 100 times worse than it should be.