Aerobic Treatment Units

An Aerobic Treatment Unit is a self-contained multi-chambered/multi-tank electrical wastewater treatment system which treats effluent to a tertiary level. Unlike the conventional system where effluent flows into leach drains, the effluent is instead pumped to an irrigation area which can be used to irrigate the garden (irrigation onto edible crops is not permitted).

The units are required to be serviced by an authorised service technician on a regular basis (usually every three months). A list of approved technicians is available at Department of Health – Authorised Service Technicians

To install an Aerobic Treatment Unit an Application to Construct or Install an Apparatus for the Treatment of Sewage needs to be submitted to the Shire.



​​Health Service
9290 6742
shire@mundaring.wa.gov.au

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