The New Zealand Institute for Public Health and Forensic Science (PHF Science) was formerly named The Institute of Environmental Science and Research (ESR).

Review of the Quality of Drinking Water Data Held in WINZ

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

This report was prepared for the Ministry of Health to review the accuracy, currency and completeness of Water Information New Zealand data.

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