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How many, if any, breaches of the Maximum Acceptable Value of e. coli in drinking water were found in 2025?

Answered Question 3615 (2026)
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Asked by

Lan Pham

List MP · Green Party

Question

  • How many, if any, breaches of the Maximum Acceptable Value of e. coli in drinking water were found in 2025?

Answered by

Hon Simon Watts

Member for North Shore · National Party · Minister of Local Government

Answer

The Authority received the following notifications of Maximum Acceptable Value (MAV) exceedances of E.coli in drinking water during the 2025 calendar year: • 119 notifications of E. coli MAV exceedances submitted in 2025 for publicly registered supplies • 222 notifications of E. coli MAV exceedances submitted by laboratories in 2025 in relation to publicly registered supplies