Useful Publications & Resources
Community Wastewater Management System (CWMS) Design Criteria
The South Australian Community Wastewater Management System (CWMS) Design Criteria has been jointly prepared by the Local Government Association of South Australia (LGA) and the Department for Health and Wellbeing (DHW). It replaces the Septic Tank Effluent Drainage Scheme (STEDS) Design Criteria (LGA, DHW).
South Australia has a large number of STEDS which were designed using the STEDS Design Criteria. In recent years there has been a shift towards sewerage systems or combinations of the two, along with the introduction of new technologies and changes to industry practices. The need for a review of the STEDS Design Criteria was identified in light of these industry changes.
The South Australian Community Wastewater Management System (CWMS) Design Criteria has been prepared with the objective of providing design criteria for all types of CWMS with particular focus on South Australian conditions. This document is to be reviewed and updated every five years.
The LGA CWMS Management Committee is proud to have provided the impetus and support towards the development of this valuable sector wide resource.
South Australian Community Wastewater Management System (CWMS) - Design Criteria(840 kb)
CWMS Design Criteria - Relevant Codes, Guidelines & Standards
The codes and guidelines that apply to CWMS Design include the:
- Australian Guidelines for Water Recycling (AGWR) Managing Health and Environmental Risks (Phase 1) (2006)(2162 kb)
- Community Wastewater Management Systems Code (SA Health 2013)(110 kb)
- On-site Wastewater Systems Code (SA Health 2013)(2901 kb)
Guidelines for Non-drinking Water in South Australia, Office of the Technical Regulator (OTR) including:
- Part 0 - Glossary of terms, abbreviations and references (2017)(532 kb)
- Part 1- Infrastructure (2017)(825 kb)
- Part 2- Onsite Plumbing (2018)(1808 kb)
The following WSAA Codes also apply to CMWS Design:
- WSA 01 – Polyethylene Pipeline Code of Australia
- WSA 02 – Sewerage Code of Australia
- WSA 03 – Water Supply Code of Australia (Supplement) Dual Water Supply Systems
- WSA 04 – Sewage Pumping Station Code of Australia
- WSA 06 – Vacuum Sewerage Code of Australia
- WSA 07 – Pressure Sewerage Code of Australia
- WSA 302 – SCADA Guidelines
Technical design criteria for STEDS are included within the Design Criteria document, as STEDS are not included in any WSAA code.
The EPA Acts, Policies and Guidelines to be read in conjunction with the Design Criteria document include:
- The Environment Protection Act 1993
- EPA Evaluation Distances for Effective Air Quality and Noise Management (August 2016)(1297 kb)
- EPA Wastewater Lagoon Construction Guidelines (Updated April 2019)(536 kb)
- EPA Septic Tank Sludge Management (October 2016)(92 kb)
- EPA Draft – South Australian Biosolids Guidelines for the Safe Handling and Reuse of Biosolids (April 2017)(734 kb)
- EPA Liquid Storage Guidelines – Bunding and Spill Management (May 2016)(154 kb)
- Relevant environmental protection policies
The latest edition of each code, standard or guideline should be applied when designing a CWMS and it is the designers’ responsibility to ensure that the latest editions are used.
LGA Septic Tank Effluent Drainage Scheme (STEDS) - Technical Specifications & Standard Drawings
Standard Drawings (Updated September 2019)
SD-00 - Drawing Index and Notes(464 kb)
SD-01 - Flushing Point and Inspection Opening Details(453 kb)
SD-02 - Property Connection Details(471 kb)
SD-03 - Flushing Point and Property Connection Details(350 kb)
SD-04 - Maintenance Hole DN1050 To DN1500(577 kb)
SD-05 - Drop Maintenance Hole Details(291 kb)
SD-06 - Maintenance Hole Junction Details(276 kb)
SD-07 - Submersible Pumping Station Plan(502 kb)
SD-08 - Submersible Pumping Station Section(807 kb)
SD-09 - Pump or Valve Chamber Access Cover(604 kb)
SD-10 - Non Submersible Pumping Station(772 kb)
SD-11 - Vent and Base Detail(541 kb)
SD-12 - Pump Station Switchboard Layout(1615 kb)
SD-13 - Lagoon Transfer Pipe Details(538 kb)
SD-14 - Storage Lagoon Overflow Detail(376 kb)
SD-15 - Lagoon Fence(500 kb)
SD-16 - Marker Post and Warning Sign Details(406 kb)
SD-17 - Facultative Lagoon Typical Arrangements(370 kb)
SD-18 - Air Valve and Scour Valve Details(382 kb)
SD-19 - Common Trench Details(640 kb)
Please note that these shall be applied to STEDS designs only. They shall not be applied to full sewage sewerage schemes.
Best practice guidance for reducing health risk for workers handling sewage, biosolids or recycled water
The Government of Western Australia, Department of Health and the Department of Mines, Industry Regulation and Safety has prepared a fact sheet to provide information and best practice guidance for organisations and workers handling human effluent (sewage), biosolids or recycled water.
There is a risk of pathogens being present in treated sewage, biosolids or recycled water even if the human effluent treated at wastewater treatment plants has been disinfected.
People who may be at risk of exposure include:
- Workers at sewage treatment plants
- Workers transporting septage from septic tanks to licenced facilities
- Operators of recycled water schemes
- Workers applying biosolids to land
- Workers and laboratory staff handling sewage or recycled water samples or biosolids or contaminated soil samples
- Plumbers, irrigators and other people involved in maintenance work for wastewater systems or recycled water
The guidance document provides both workers and employers with details on the more common hazards when handling human effluent and the best practice preventive measures required to manage risks.
Please visit their website to find out more information or download the fact sheet HERE.