Library

Guidelines for Modelling Water Distribution Systems

This document was written to provide a brief overview of water supply modelling activities, intending to present some principles of “Good Modelling Practice”, for people involved in undertaking and managing water supply modelling projects.

Carbon Accounting Guidelines for Wastewater Treatment: CH4 and N2O

This document provides guidelines for accounting for methane (CH4) and nitrous oxide (N2O) emissions

from municipal wastewater treatment, discharge and sludge processing in New Zealand. Emissions

from on-site septic tanks are also covered.

Good Practice Guide for the Supply of Chlorine for use in Water Treatment

This Guide covers requirements for ensuring liquefied chlorine gas (commonly known as liquid chlorine) sodium hypochlorite and calcium hypochlorite are of a suitable quality for use in drinking water treatment.

New Zealand Gravity Pipe Inspection Manual

The 4 edition of the New Zealand Gravity Pipe Inspection Manual incorporates the evolution of pipeline inspection and the changing requirements of the water industry since the publication of the 3 Edition in 2006.

Boundary Backflow Prevention for Drinking Water Supplies Code of Practice

This document provides best practice guidance on how water suppliers can minimise the risk of backflow .

Choosing an On-site Wastewater Management System, OWMS

This technical sheet is written for those who are wanting to choose an affordable, sustainable and effective OWMS for their property.

State of Play 3 Waters Reform Options

Industry Consultation workshops throughout August 2018

Why is chlorine important in drinking water?

Fond out why chlorine is important in drinking water?

Educational resources

How can we make water safe to drink?

Find out how we make water safe to drink?

Educational resources

Why do we need to treat groundwater to make it safe to drink?

Find out why we need to treat groundwater to make it safe to drink?

Educational resources

Water New Zealand Havelock North Outcomes - Napier Seminar

Water New Zealand staff have been holding seminars throughout the country so that water suppliers can better understand how the findings of the Havelock North water contamination inquiry could affect the delivery drinking water and what this may mean for suppliers.

Guidelines for Beneficial Use of Organic Materials on Land

Guidelines for beneficially reusing organic materials on land are under development. The guidelines will supersede 2003 Guidelines for the Safe Application of Biosolids to Land and include additional organic material such as animal manures, and other agricultural waste materials, which also contain pathogens and contaminants.

Waste Stabilisation Ponds: Design and Operation

This document is primarily written for those involved in wastewater treatment pond management and operations: local authorities, regional councils, and wastewater systems operations personnel.

Waste Water Modelling Guidelines

The purpose of these guidelines is to provide good practice protocols for undertaking wastewater (sewer) network modelling in New Zealand.

Fats, Oil and Grease (FOG) Treatment in ‘Grease Converters” using Bioadditives

FATS, OILS and GREASES: (FOG)

Keith Davis - An Opinion and some facts Treatment in ‘Grease Converters” using Bioadditives

September 2013

The Story of Drinking Water

The Story of Drinking Water is a colourful, informative booklet providing an overview of the importance of freshwater and the water supply system.

Water Metering of Customers on Reticulated Supplies

This good practice guide is intended to prescribe good practices for the supply, use, and operation of water meters throughout the country by a company, authority, or organisation.

National Asbestos Cement Pressure Pipe Manual

This Good Practice Manual has been developed to assist water infrastructure Asset Managers with understanding the condition and likely remaining life of their Asbestos Cement (AC) pressure pipelines.

Underground Utilities – Seismic Assessment and Design Guidelines

The Guidelines aim to improve the ability of underground utility networks to function and operate during and following earthquakes for safety, economic and community wellbeing reasons. The Guidelines recognise that earthquakes may cause some limited and manageable damage. Although they do not attempt to prevent all damage, they do seek to help manage and contain it.

National Guidelines for Occupational Health and Safety in the NZ Water Industry

In 2016 Water New Zealand undertook a comprehensive re-development of the health and safety guidelines with the objective of:

  • Providing guidance material and Model material reflective of requirements of Health and Safety at Work Act 2015 (HSWA).
  • Providing examples of good risk management processes relating to activities relevant to the water industry.
Pipe Renewals Guidelines

The Evidence Based Investment Decision Making for 3 Water Pipe Network Programme (Pipe Renewals Guidelines Programme) initiated by Quake Centre, IPWEA and Water New Zealand (Water NZ) will develop guidance documents and tools to assist New Zealand’s water organisations to make nationally consistent, evidenced-based decisions relating to the management and renewal of their 3 Water Pipe Networks.

Good Practice Guide for the Supply of Polyelectrolytes for Use in Drinking Water Treatment

The main purpose of this Guide is to provide purchasers, manufacturers and suppliers with the minimum physical, chemical and testing requirements for polyacrylamides, EPI-DMA polyamides, and PolyDADMAC to meet safe limits for drinking water supplies.

Good Practice Guide for the Supply of Hydrated Lime for Use in Water Treatment

The main purpose of this Guide is to provide purchasers, manufacturers and suppliers with the minimum physical, chemical and testing requirements for Hydrated Lime to meet safe limits for drinking water supplies.

Good Practice Guides for Supply of Aluminium Sulphate

The main purpose of this Guide is to provide purchasers, manufacturers and suppliers with the minimum physical, chemical and testing requirements for aluminium sulphate to meet safe limits for drinking water supplies.

Infiltration and Inflow Control Manual

This Manual is intended for wastewater managers, planners, engineers, and operations and maintenance staff. The manual is organised into the categories, with each category listing the corresponding related sections.

H20-DS Hillslopes to Ocean: Decision Support System for Sustainable Drainage Management

In these guidelines waterway management problems are identified, causes of these problems are discussed, and management options are reviewed. An operational decision making framework to identify problems and select management measures is presented.

Code of Practice for the Fluoridation of Drinking-Water Supplies in New Zealand

The overall objective of this Code is to provide guidelines for safe and effective addition of fluoride into a drinking-water supply.

Good Practice Guide Supply of Fluoride for use in Water Treatment

The main purpose of this Guide is to provide purchasers, manufacturers and suppliers with the minimum requirements for hydrofluosilicic acid, sodium fluoride and sodium silicofluoride, including physical, chemical and testing requirements.

Revised Standard for the Supply of Polyaluminium Chloride for Use in Water Treatment

The main purpose of this Standard is to provide purchasers, manufacturers and suppliers with the minimum requirements for polyaluminium chloride, including physical, chemical and testing requirements.

Who, What, Wai? Improving Urban Water Services

We hope the position outlined in this paper will be carefully considered when decisions are made on the future management of New Zealand’s urban water services.

Visual Assessment Manual for Utility Assets

This manual has been prepared to help people conduct mainly visual assessments of smaller civil plant.

Water Loss Guidance Material

This document is the User Manual for the 2008 upgrade of the Water Loss Benchmarking Software (BenchlossNZ).

Constructed Wetland Guidelines

These illustrated guidelines provide basic guidance for treatment wetland designers and operators with interest in plant establishment and management in constructed wastewater treatment wetlands.

Keep It Clean - Preventing Stormwater Pollution

Keep it Clean offers tips and ideas on preventing stormwater pollution.

Sustainable Drainage Management Field Guide 2005

This field guide promotes sustainable drainage management by providing a series of critical Best Management Practices (BMPs) and a framework to apply these practices.

On-site Stormwater Management Guidelines

This document provides stormwater design professionals with the information they need to select and design appropriate on-site stormwater management devices for the majority of applications in New Zealand.

Biosolids Guidelines

The guidelines contain information and recommendations to assist producer dischargers and regulators (Regional Councils) to manage the discharge of biosolids to land in New Zealand.

NZ Municipal Wastewater Monitoring Guidelines

The core principle of these guidelines is that the higher the potential risks of the discharge to the receiving environment, the greater the level of monitoring that will be required. This approach works best if the experience of the treatment plant operator, regulator and local knowledge and values are incorporated into the design of the monitoring programme.

New Zealand Infrastructure Asset Grading Guidelines 1999

The Guidelines have been compiled to provide Utility Network Operators and other asset managers with a consistent and straightforward method for producing information on the condition and performance of water supply, wastewater and stormwater infrastructure assets.

National Study for the Composition of Sewage Sludge

Discharges of hazardous wastes to sewers can cause treatment processes to fail. This can result in unsatisfactory effluent being discharged to natural waters, or in incompletely digested sludge being pumped to lagoons where it can create a public health risk or bad odours.

Management of Water Treatment Plant Residuals

This handbook offers background, summary information, and references on the components which make up a comprehensive residuals management plan.