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Is the Minister aware of the "Risk maps of nitrate in groundwater" published by Environment Canterbury, which show large areas of Canterbury as having a "moderate" or "high" risk of "nitrate concentrations exceeding the MAV [maximum acceptable value for drinking water] in shallow groundwater"?

Answered Question 36518 (2026)
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Asked by

Lan Pham

List MP · Green Party

Question

  • Is the Minister aware of the "Risk maps of nitrate in groundwater" published by Environment Canterbury, which show large areas of Canterbury as having a "moderate" or "high" risk of "nitrate concentrations exceeding the MAV [maximum acceptable value for drinking water] in shallow groundwater"?

Answered by

Hon Nicola Grigg

Member for Selwyn · National Party · Minister for the Environment

Answer

I am aware of the maps, which I understand were published by Environment Canterbury in 2022.