HSTP System or Home Sewage treatment plants (HSTP) are also referred to as – On-site sewerage facilities (OSSF), Aerated Wastewater Treatment System (AWTS), Sewage treatment unit (STU), Aerated treatment unit (ATU) and Wastewater Treatment Plants (WWTP)

All HSTP system collect black & grey wastewater and are situated within property boundaries that treat the sewerage generated from the property, and the land application area of the treated effluent. OSSF include all types of wastewater treatment and land application. These systems are required in areas not serviced by the local councils’ sewerage infrastructure.

Effective on-site treatment and land application achieves:

  • protection of public health and safety
  • maintenance and enhancement of environmental quality
  • maintenance and enhancement of community amenity

Each Council performs regulatory functions regarding new installations of OSSF, additions to existing systems, effluent run-off complaints, licensed service persons, site and soil evaluators, and auditing and monitoring.

Poorly operated and maintained HSTP Systems can pose a high risk to public health and have the potential to create extensive environmental harm. However, owners of properly maintained HSTP systems benefit from more efficient systems with a longer life, increased property values, reduced health risk, and improved environmental quality.