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Wastewater Surveillance Report - Monthly Report October 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

For the month of October, SARS-CoV-2 levels in wastewater averaged at 3.07 million genome copies per person per day (GC/p/d). During this period SARS-CoV-2 levels were highest in the week ending 29 October at 4.64 million GC/p/d.

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