Aerobic Treatment Units

Oct 10, 2022, 15:53 PM
Title : Aerobic Treatment Units

What are Aerobic Treatment Units?

Aerobic Treatment Units (ATUs) are a multi stage alternative to conventional septic tanks and provide an improved quality of effluent treatment.

The chlorinated effluent from ATUs may be used to surface irrigate garden areas but can only be used below grassed areas. It is not approved for any use in vegetable gardens.

Due to environmental concerns, usually associated with the potential degradation of environmental water bodies, some developments are required to use a wastewater system which is capable of removing phosphates.

Some ATUs are approved as Phosphate removing. These ATUs may use an in-system phosphate removing process or an approved phosphate binding amended soil in the irrigation area.

The type of phosphate removing system can affect the choice of effluent irrigation methods available e.g. amended soil systems cannot be used with drippers

ATUs must be serviced regularly to ensure that they are operating effectively and that the quality of the final effluent is maintained.

What is the process for installing Aerobic Treatment Units?

System installations are only permitted with Shire of Augusta Margaret River or Department of Health approval. The Department of Health will assess larger development proposals.

Persons wishing to install Aerobic Treatment Units or septic tank systems need to lodge an Application to Construct or Install an Apparatus for the Treatment of Sewage with the Environmental Health unit.

It is an offence to commence construction of a wastewater system without an approval and it is also an offence to commission an illegally installed system or to commission a system prior to a final inspection and approval to use from the local government.

For more information please read the Code of Practice for the Design, Manufacture, Installation and Operation of Aerobic Treatment Units.

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