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

  • Freshwater species and habitat management

    Find out how we can help you with freshwater species and habitat management.
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    Flow assessment and management

    We offer a range of flow assessment and management services.
  • Wastewater treatment

    We can help with wastewater treatment and ecotoxicology.
  • Water quality monitoring and advice

    More information about our water quality monitoring and advice services.
  • Specialist analytical services

    Service
    Find out more about our specialist analytical services.
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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.
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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.
  • Mitigation

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