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What data, if any, does her agency hold on arsenic concentrations in the Waikato River over the past 10 years, including sampling locations, dates, and trends over time?

Answered Question 2937 (2026)
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Asked by

Jo Luxton

List MP · Labour Party

Question

  • What data, if any, does her agency hold on arsenic concentrations in the Waikato River over the past 10 years, including sampling locations, dates, and trends over time?

Answered by

Hon Penny Simmonds

Member for Invercargill · National Party · Minister for the Environment

Answer

I am advised that the Ministry for the Environment holds limited data on Arsenic concentrations in the Waikato River as part of the National Drinking Water Quality Survey of New Zealand Rural Schools 2023/2024 (https://environment.govt.nz/assets/publications/Freshwater/national-drinking-water-quality-survey-of-nz-rural-schools.pdf). For more fulsome information, I refer the Member to the Waikato Regional Council and the Water Services Authority – Taumata Arowai (https://www.taumataarowai.govt.nz/assets/Uploads/Network-Performance/Drinking-Water-Regulation-Report-2024.pdf).