Watercare have lifted a boil water notice for several Auckland suburbs after the source of an E.coli result in routine testing was traced to a single water quality monitoring tap.
Thousands of residents in parts of Hillsborough, Mt Roskill, Royal Oak and Three Kings had been under the notice for two days following a detection of the bacteria on Monday evening.
In a statement shortly before 10am on Wednesday, Watercare said its investigation had confirmed the issue was caused by a single water quality monitoring tap within its "extensive network".
"The tap has now been replaced and subsequently retested, and we can confirm it was the source of the issue. This has been fully addressed, and there is no ongoing risk to the drinking water supply," it read.
"We are satisfied that water quality is normal and meets all safety standards. This is supported by multiple clear test results across the affected area, confirming the water supply is safe."
Watercare thanked residents and businesses for their patience and understanding and for following the advice while they worked through this issue.
"We know the notice caused disruption, and we appreciate the cooperation shown while we took a careful and precautionary approach to protecting public health."
Temporary water tankers in the area would be stood down.
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