The Institute of Environmental Science and Research (ESR) has changed its name to the New Zealand Institute for Public Health and Forensic Science (PHF Science) as of 1 July 2025. The new website address is www.phfscience.nz. Visitors will automatically be redirected to the new address. Please check and update any links and bookmarks after this change.

Groundwater Research Impact Report, Pūrongo Pānga Rangahau Wainuku 2023

Please note: As of 1 July 2025, the New Zealand Institute for Public Health and Forensic Science (PHF Science) is the new name for the Institute of Environmental Science and Research (ESR). Research and reports published prior to this date may reference the organisation’s former name.

Summary

In Aotearoa New Zealand, nearly half of drinking water comes from groundwater, and it is an important source for replenishing surface water like rivers, lakes, and wetlands. This report highlights ESR’s work to understand the current state of groundwater, how groundwater will respond to stressors, and how to prevent groundwater contamination.

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