Improved groundwater quality indicator reveals a mixed picture of New Zealand’s aquifers – media release
24 June 2025
An improved groundwater quality indicator, with more comprehensive data, additional measures, and refined methodology, has been released by Stats NZ today.
“This release has greatly improved data coverage, helping us better understand the current state of groundwater and how it’s changing over time,” environment statistics spokesperson Tehseen Islam said.
“It’s a step forward in how we assess and report on groundwater quality.”
Groundwater is water stored underground in aquifers – layers of water-bearing rock or sand. It is commonly accessed through wells and can also emerge naturally through springs.
Groundwater plays a crucial role in supporting rivers, lakes, and wetlands, and supplies drinking water to nearly half of New Zealand’s population.
Visit our website to read this news story and the indicator page:
