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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 -
March 2009The discussion document sought feedback on policy proposed to implement the Waste Minimisation Act 2008. Submissions closed on 15 May 2009. Read more -
November 2013This technical report provides evidence and advice used in setting the E. Coli attribute bands for secondary contact recreation in rivers and lakes. 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 2005This report provides information on different home heating options and their costs and benefits. Read more -
May 2019This report reviews how mechanistic (process-based) models simulate periphyton biomass using algorithms describing known growth and loss processes based on nutrients, light, temperature, grazing, and physical factors. Read more -
October 2013The Ministry for the Environment commissioned ENVIRON Australia Pty Ltd, to investigate the practicalities of identifying, sorting and segregating plastics in the e-waste recycling industry, according to those components that contain banned brominated flame retardant (BFR) chemicals. Read more -
November 2005This report provides information on different home heating options and their costs and benefits from the Warm Homes study. This report presents the process and results of the second phase of the study. Read more -
April 2004This document provides interim guidance on ‘functional’ indicators of ecosystem processes, such as ecosystem metabolism Read more -
May 2019This report summarises a workshop held to gather feedback on the ‘Interim New Zealand Guidelines for Cyanobacteria in Recreational Fresh Waters’. Read more -
July 2001This publication provides background information about the sources, causes and processes involved with the deterioration of streams in farmed catchments and the consequences of that deterioration. Read more -
November 2019This report presents the approach and results of groundwater use in New Zealand. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s lake water quality monitoring network. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s river water quality monitoring network. Read more -
July 2009This report summarises changes in nuisance periphyton (algal) growth at National River Water Quality Network sites between 1990 and 2006. Read more -
June 2009The report is part of a series of three reports that strengthen the evidence base for a potential industry-led voluntary product stewardship scheme. Read more -
September 2010This study reports on the use, recycling and disposal to landfill in New Zealand of articles containing brominated diphenyl ether (BDE) flame retardants. Read more -
May 2019This report analyses environmental conditions that cause the growth of periphyton in streams and rivers. Read more -
September 2020An evaluation report and compilation spreadsheet of available tools, databases and resources relating to the distribution of threatened freshwater species and their habitats 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 -
May 2020This NIWA report summarises existing literature on the consequences of delaying reductions to nutrient inputs on rivers, estuaries and lakes. Read more -
April 2015One of two reports that assessed the options and implications of using the Macroinvertebrate Community Index (MCI) as an attribute in the National Policy Statement for Freshwater Management. It looked at identifying potential threshold values to define numeric attribute states for MCI. Read more -
December 2013An investigation into the feasibility of using freshwater fish predictive models in national state of the environment indicators. Read more -
December 2018Ministry for the Environment, in partnership with Bay of Plenty Regional Council, commissioned a literature review to get an accessible summary of relevant research carried out in New Zealand on methods to manage sediment and their economic assessment. Read more -
Corrections to errors on visual water clarity units in ANZECC Guidelines. Read more -
May 2018This report outlines the establishment of reference conditions and trigger values. Reference conditions are defined as the chemical, physical or biological conditions that can be expected in streams and rivers with minimal or no anthropogenic influence. Read more -
July 2003Guidance on land use planning approaches for land that is on or near an active fault. Read more -
June 2020This factsheet provides a high-level overview of the new freshwater planning process (FPP) introduced by the Resource Management Amendment Act 2020. Read more -
September 2020This document provides detailed technical guidance about the new freshwater planning process (FPP) introduced by the Resource Management Amendment Act 2020. Read more -
October 2018This document captures areas of shared interest in water quality and ecosystem health improvements and defines how the Crown and Māori will work together to make improvements to New Zealand’s freshwater. Read more -
April 2017This checklist outlines mandatory changes enacted through the Resource Legislation Amendment Act for councils to implement through their resource management processes. Read more -
August 2006This document is the summary of submissions received on the Product Stewardship and Water Efficiency Labelling Discussion Document 2005. Read more -
September 2001This document summaries submissions received on the revised and new ambient air quality guidelines. Read more -
November 1998A 1998 discussion paper on managing hazardous waste in New Zealand. Read more -
May 2006This report describes two New Zealand whiteware product stewardship schemes. Read more -
December 2004This discussion document outlines the different ways in which New Zealanders value and use freshwater. It also looks at how New Zealand’s water is managed and the pressures and challenges facing our water management system. Read more -
June 2002Information for lake managers on pest fish and weeds in New Zealand lakes. Read more -
May 2018Phormidium is a potentially toxic, mat-forming benthic cyanobacterium found in an increasing number of New Zealand rivers. This report outlines a study which investigated drivers of Phormidium blooms in New Zealand rivers to predict risk of blooms. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s river water quality. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s lake water quality. Read more -
May 2019This report develops a model predicting the reference state for stream macroinvertebrates across New Zealand. Read more -
March 2009The latest indicator update providing information the pressure road transport places on New Zealand’s environment. Read more -
May 2020A literature review of studies that jointly considered climate and freshwater policy in New Zealand. Read more -
July 2013The latest indicator update providing information on the biophysical condition of New Zealand's rivers. Read more
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September 2019This data report provides an annual data picture of brassica grown in New Zealand. Read more
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April 2006In early 2005, the Government held meetings throughout New Zealand to discuss problems facing water management , and to identify possible solutions. This document summarises what we found out, and what we believe needs to be done to improve freshwater management in New Zealand. Read more -
October 2018This document sets out the Government’s plan to restore and protect freshwater in New Zealand. Read more -
June 2010The report assesses how well Integrated catchment management is working in New Zealand for managing freshwater quality. Read more -
December 2012The latest indicator update providing information on the area of New Zealand’s marine areas with legal protection. Read more
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November 2001This protocol identifies and describes standardised protocols for use by agencies throughout New Zealand for macroinvertebrate biomonitoring. Read more