Wastewater legislation and guidelines

The following resources support compliance with the Health (Treatment of Sewage and Disposal of Effluent and Liquid Waste) Regulations 1974 and Health (Temporary Sanitary Conveniences) Regulations 1997.

Legislation

• Health (Treatment of Sewage and Disposal of Effluent and Liquid Waste) Regulations 1974 (external site)
• Health (Temporary Sanitary Conveniences) Regulations 1997 (external site) 

Government policy

• Stae Planning Policy 2.9 - Water and associated guidelines (external site) 

Code of Practice

• Code of Practice for the Reuse of Greywater in Western Australia (PDF 1.3MB)
• Code of Practice for the Design, Manufacture, Installation and Operation of AerobicTreatment Units (PDF 886KB)
• Code of Practice for Product Approval of Onsite Wastewater Systems in Western Australia (1.1 MB)

Supporting guidelines

Certification of installation of wastewater treatment systems

• Certification for installation of wastewater treatment systems

Engineering verification of wastewater treatment systems

• Guidance note for independent third party engineering verification

Sewage holding tanks

• Guidance for the use of Sewage Holding Tanks or Holding Tanks associated with Mobile Ablution Blocks and Mobile Accommodation Units

Site and soil evaluation

• Guidance on Site and Soil Evaluation for Onsite Sewage Management (PDF 260KB)

Biosolids

• Western Australian Guidelines for Biosolids Management (PDF 1.76MB)
• Best practice guidance for reducing health risk for workers handling sewage, biosolids or recycled water (PDF 103KB)

Holding tanks

• A Compilation of Australian Standards on Water Holding Tanks (PDF 305KB)

Sewage overflows

• Best practice guidance for the notification and risk management of sewage overflows into buildings (PDF 315KB)
• Wastewater after cyclones floods and other disasters (HealthyWA)