Water and Sewerage Codes

There are several codes that govern work carried out on water and sewerage assets in Australia and within Melbourne.

This page outlines codes from the Water Services Association of Australia (WSAA) and the Melbourne Retail Water Authority (MRWA) for work on water assets, sewerage assets and pipelines. For more information about these organisations and their codes, please:

Depending on what type of work you are doing, there may also be some further specifications that you need to comply with. Visit our Specifications page for more information.


Water Codes

MRWA WSAA Water Code

Drinking and non drinking water supply network assets are to be designed and constructed in accordance with the Melbourne Retail Water Authority (MRWA) edition of the Water Code, known as WSA 03-2011-3.1 MRWA edition. This code sets out the particular requirements of the Melbourne retail water businesses and includes both descriptive text and standard drawings.

WSAA Integrated Rainwater Tank Code

This WSAA Supplement to the Water Supply Code 2002 Version 2.3 covers the design and construction of Integrated Rainwater Tank Systems for servicing new developments. The supplement addresses the provision of a water supply from a rainwater tank, the augmentation of this rainwater tank supply in times of drought and its impacts on reticulated water supply design and construction.


Pipeline Codes

WSAA Polyethelene Pipe Line Code

The WSAA Polyethylene (PE) Pipeline Code provides water industry practitioners with best practice guidelines in the use of PE pipeline systems and covers, pressure pipelines, non-pressure sewerage pipelines, vacuum sewer systems using polyethylene and pipe relining using polyethylene. The 3rd edition of the Code builds on the experience and confidence of the urban water industry with use of PE pipelines. Revisions include fitting design factors, amendments to jointing requirements, general test procedures for pressure applications, comments on use of repair clamps, advice and limitations for squeeze-off, new stiffness class requirement for non-pressure applications, additional option for internal colour of non-pressure pipes and new prerequisites for training.

WSAA Under Pressure Connection of Pressure Pipelines Code

This is a WSAA Supplement to Water Supply Code of Australia 2002 Version 2.3. The supplement covers under-pressure cut-in connections of pressure pipelines DN 80 to DN450, primarily to water mains.


Sewerage Codes

MRWA WSAA Sewerage Code

Sewerage system assets are to be designed and constructed in accordance with the Melbourne Retail Water Authority (MRWA) edition of the Sewerage Code. This code sets out the particular requirements of the Melbourne retail water businesses and includes both descriptive text and typical drawings.

WSAA Vacuum Sewerage Code

The WSAA Vacuum Sewerage Code of Australia covers the planning, design and construction of vacuum sewers up to and including DN 300, vacuum service connections and property connection sewers.

MRWA Supplement to the WSAA Pressure Sewer Code

This supplementary code specifies Melbourne Retail Water Agency requirements which are different or additional to the WSAA Code. Please note that these requirements are to take precedence over the WSAA code. For more information, download MRWA Supplementary code (pdf).

WSAA Pressure Sewer Code

The WSAA Pressure Sewerage Code of Australia covers the planning, design, products and materials of reticulation networks up to and including DN 300, it includes information about on-property design, collection/grinder pump units and service connection pipework, as well as air management in pressure sewer systems. Construction, testing and commission are also addressed, supported by standard drawings.

WSAA Conduit Inspection Reporting Code

The WSAA Conduit Inspection Reporting Code focuses on condition assessment of conduits such as sewers, sanitary and stormwater drains, as well as maintenance structures. It replaces the Sewer Inspection Reporting Code that was published in 2002. This 2nd edition includes new codes to better describe some defects, a revised scoring system that recognises different relevances of particular defects on rigid and flexible pipes, revised structural and service grading thresholds, acceptance limits for defects for newly constructed sewers.

City West Water Supplement to the WSAA Sewerage Pumping Station Code

This supplementary code specifies City West Water's requirements which are different or additional to the WSAA Code. Please note that these requirements are to take precedence over the WSAA code. 

The WSAA Sewerage Pumping Station Code covers the planning, design and construction of pumping stations and pressure mains up to and including 200 litres per second and DN 375, respectively.

pdf

This edition includes a design program for sizing pressure mains, complete technical requirements for construction, testing and commissioning along with a selection of standard drawings.

WSAA Sewerage Pumping Station Code

The WSAA Sewerage Pumping Station Code covers the planning, design and construction of pumping stations and pressure mains up to and including 200 litres per second and DN 375, respectively. This second edition now includes a design program for sizing pressure mains, complete technical requirements for construction, testing and commissioning along with a selection of standard drawings.