Publication Search
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May 2020This report estimates the potential impact of the National Policy Statement for Freshwater Management (2017) and the Essential Freshwater package on the dairy, beef and sheep farming sectors. Read more -
May 2020This document provides a high-level overview of the impact assessment for Action for healthy waterways including the objectives and scope, findings, parties involved, methodologies applied, and the limitations and constraints to the analysis. Read more -
May 2020This report assesses the costs of the Essential Freshwater Package relative to the existing National Policy Statement for Freshwater Management. Read more -
May 2020This information sheet describes the environmental and economic analysis of the Action for healthy waterways package. Read more -
May 2020This information sheet sets out an overview of what the new regulations mean from an iwi/Māori perspective, recognising the importance and significance freshwater has for iwi/Māori and the Crown’s responsibilities under the Treaty of Waitangi. Read more -
May 2020This information sheet describes how attributes in the new National Policy Statement for Freshwater Management contribute to understanding how freshwater provides for ecosystem health and human contact. Read more -
May 2020This memo sets out a technical review by NIWA of two reports relating to environmental impact assessment of Essential Freshwater policies. Read more -
May 2020This report presents research conducted by Lincoln University on the willingness to pay for the various attributes associated with New Zealand’s green premium. Read more -
May 2020This report summarises work to evaluate load reductions required to meet the new National Policy Statement for Freshwater Management's nutrient-related bottom lines. Read more -
May 2020This memo assesses whether councils would need to make changes to wastewater treatment in addition to those already identified in the Boffa Miskell report Cost estimates for upgrading wastewater treatment plants to meet objectives of the NPS freshwater. Read more -
May 2020This is the second of two Infometrics reports providing Māori economic impact analysis for the Essential Freshwater proposals. Read more -
May 2020This is the first of two Infometrics reports providing Māori economic impact analysis for the Essential Freshwater proposals. Read more -
May 2020This report uses a kaupapa Māori framework to assess the impacts of the 2019 freshwater proposals on Māori values relating to freshwater Read more -
May 2020This AgResearch report presents insights on the potential nature of social impacts emerging from freshwater policy changes based on past social impact assessments (SIAs). Read more -
May 2020A literature review of studies that jointly considered climate and freshwater policy in New Zealand. Read more -
May 2020This NIWA report summarises existing literature on the consequences of delaying reductions to nutrient inputs on rivers, estuaries and lakes. Read more -
May 2020This report builds on the report released by the Freshwater Science and Technical Advisory Group in June 2019. Read more -
May 2020This report identifies the expected benefits of the Essential Freshwater Package and examines whether they can be measured in monetary terms. Read more -
May 2020This Castalia report estimates the administrative costs imposed under the Action for healthy waterways package for New Zealand’s 16 regional councils. Read more -
May 2020This report by Perrin Ag estimates the on-farm economic impact of a selection of measures to mitigate the effect of farming on freshwater ecosystem health. Read more -
May 2020This information sheet focuses on how the Government is supporting changes to improve land-use practices and achieve better water outcomes. Read more -
May 2020This report presents the modelled results of the impact of the National Policy Statement for Freshwater Management (2017) and two variants of the Essential Freshwater package on New Zealand’s economy in 2030 and 2050. Read more -
Further analyses of fine sediment attributes to support development of the NPS freshwater managementMay 2020These six technical reports detail analysis used to finalise the suspended and deposited sediment attributes for the National Policy Statement for Freshwater Management. Read more -
May 2020This report by the Freshwater Independent Advisory Panel makes a series of recommendations about the proposals outlined in the Action plan for healthy waterways consultation document. Read more -
May 2020This report provides a summary of the submissions made on the proposals outlined in the Action for healthy waterways discussion document. Consultation on these proposals ran from 5 September to 31 October 2019. Read more -
April 2020In 2018, the Ministry asked Deloitte to consider the extent of water bottling in Aotearoa New Zealand NZ and the economic value of water bottling for water bottlers and communities. This report presents their findings. Read more -
April 2020This report by Cawthron collates and analyses regional council river and stream monitoring data, including measures of fine deposited sediment and habitat quality. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. It produces neurotoxins called anatoxins and ingestion of cyanobacteria mats has caused numerous dog deaths. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. Read more -
January 2020This document provides information for iwi/ Māori about the proposed National Policy Statement for Indigenous Biodiversity. Read more -
December 2019The Ministry commissioned this report to improve our understanding of how geospatial information can inform meaningful engagement with iwi/hapū. Read more -
December 2019This guide provides information for people who import, manufacture, or sell products covered by New Zealand’s Water Efficiency Labelling Scheme (WELS). Read more -
November 2019This report prepared by 4Sight Consulting and Market Economics is intended to test the proposed National Policy Statement for Indigenous Biodiversity (NPSIB) before public consultation and help inform stakeholders on the likely impacts, benefits and costs of the NPSIB. Read more -
November 2019The proposed National Policy Statement for Indigenous Biodiversity (NPSIB) sets out the objectives and policies to identify, protect, manage and restore indigenous biodiversity under the Resource Management Act 1991 (RMA). Read more -
November 2019This is a summary of the discussion document for the proposed National Policy Statement for Indigenous Biodiversity. Read more -
November 2019This report by Honorary Professor Peter Skelton concerns the management and allocation of freshwater in the Otago region. It contains recommendations for the Minister for the Environment on improving freshwater management under the Resource Management Act 1991. Read more -
November 2019This report describes national data sets related to groundwater flux estimation, including the methodologies to undertake this work and resultant digital data sets. Read more -
November 2019This report reviews groundwater models in New Zealand. Read more -
November 2019This report describes an update of New Zealand's depth to hydrogeological basement map, including the methodology used to undertake this work and the resultant digital data sets. Read more -
November 2019This report describes the development of a Hydrogeological-Unit Map for New Zealand, which provides a classification of geological units in terms of their importance for groundwater flow and storage in an ArcGIS seamless digital map. Read more -
November 2019This report presents the approach and results of groundwater use in New Zealand. Read more -
November 2019This consultation document provides information about the proposed new National Policy Statement for Indigenous Biodiversity. Read more -
October 2019Our annual report 2018/19 provides information on how we’ve performed during 2018/19. Read more -
October 2019This NIWA consultant report provides analysis of state and trends in a number of water quality variables in urban rivers and streams in New Zealand. Read more -
September 2019This draft NIWA report provides the first attempt to develop bottom-line thresholds for suspended and deposited sediment based on ecological responses for New Zealand rivers and streams. Read more -
September 2019This report describes hydrological modelling that estimates the suspended sediment load reductions required to meet proposed suspended sediment attribute bottom lines. Read more -
September 2019This report provides a cost-benefit assessment of potential interventions to meet proposed suspended sediment attribute bottom lines. Read more -
September 2019This literature review assesses the primary sources of variability in sediment generation in an urban environment and the impact of urban development on sediment discharges in the short and long term. Read more -
September 2019This report builds upon the findings of the Sediment attributes and urban development (report 1) literature review - see link in Related publications below. Read more