On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

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    Impacts of meat and dairy processing

    What are the impacts of meat and dairy processing activities on water quality and mahinga kai?

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    Timber

    A range of wood products are produced in Aotearoa.

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    Mitigation

    Here are some simple steps to minimise the effects of riparian vegetation loss on water quality and mahinga kai.

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    Mitigation

    Simple steps to minimise the effects of chemical contamination on water quality and mahinga kai.
    Freshwater quality

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    Mitigation

    Steps to minimise the effects of barriers and altered water flows on water quality and mahinga kai

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    Mitigation

    Here are some simple steps to minimise the effects of nutrient overloading on water quality and mahinga kai.
    Freshwater quality

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    Mitigation

    Simple steps to minimise the effects of infectious substances on water quality and mahinga kai.
    Freshwater quality

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    Mitigation

    Here are some simple steps to minimise the effects of sediment on water quality and mahinga kai.
    Freshwater quality

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    Mitigation and best practice options

    Steps to minimise the effects on water quality and mahinga kai.

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    Impacts of wastewater treatment

    How does wastewater treatment impact water quality and mahinga kai?

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    Impacts of Aquaculture

    Impacts of commercial aquaculture on water quality and customary harvest activities

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    Meat and dairy processing activities

    Meat and dairy products are processed in dairy factories, meat works, tanneries, and factories.