Environmental Health Intelligence NZ (EHINZ) will cease its surveillance of New Zealand's environmental health on 18 December. Webpages will not be updated after that date.

Future enquiries should be addressed to either Dr Kristie Carter or Dr Greg Martin at the Public Health Agency, Ministry of Health.


Intelligence for decisions

Environmental Health Intelligence NZ provides information and intelligence on how the environment affects the health of Aotearoa New Zealand's population. Explore our domains:

Regional data

Latest news

Annual key findings

  • Climate Change
    Most years since 2010 had more hot and fewer cold days than the baseline. Extreme rainfall in 2022 affected the same regions as Cyclone Gabrielle in 2023.
  • Indoor Environment
    Maternal smoking decreased over the past decade, with Māori rates down 12 percentage points.
  • Water quality
    The percentage of New Zealanders with access to registered and/or fluoridated drinking water supplies remained the same in the decade between 2011 and 2021.
  • Air Quality
    WHO air quality guidelines were exceeded at most stations monitoring nitrogen dioxide (NO2) and fine particulate matter (PM2.5) in 2020.