Domestic Below Ground Aerobic Treatment Systems

Available in lightweight polyethylene (Poly/Duralen) or concrete construction
Fully approved by WA Department of Health and compliant with AS/NZS 1546.3
Recognised by all WA Shires, meeting nutrient-retention requirements
Efficiently recycles household wastewater for garden or orchard irrigation
Built tough in Australia, with a 15-year tank warranty for peace of mind
Energy-efficient design with minimal running costs
Low-maintenance system requiring just two service visits per year

Domestic Below Ground Aerobic Treatment Systems

Explore our range of below-ground systems designed to recycle household wastewater efficiently and safely — fully approved and built for long-term reliability.

CODE	NUMBER OF BEDROOMS	DESCRIPTION
O-2 ATU	1 to 5	This is a basic Aquarius® Aerated Wastewater Treatment system. With anaerobic, aerobic, clarification, and discharge
O-2 NR ATU	1 to 5	This is a more advanced Aquarius® Aerated Wastewater Treatment system. With anaerobic, aerobic, clarification, flocculation, and discharge. Nutrient Retentive (Phosporous removal)
O-3 ATU	1 to 5	This system is an even more advanced Aquarius® Aerated Wastewater Treatment system. With anaerobic, aerobic, clarification, flocculation, disinfection (Utilising ozone) and discharge. Nutrient Retentive (Phosporous removal). Environmentally Friendly

Efficient Domestic Below-Ground Aerobic Treatment Unit Systems

Coerco’s Aquarius® Below-Ground ATU Systems are designed to treat all wastewater in your home from the kitchen, bathroom, shower, and laundry, as per Department of Health of WA Standards. This recycled water can be used for irrigation landscaping or lawns, or disposed of into flatbed or conventional leach drains and soak wells.

The O-2 NR and O-3 models feature nutrient-retention capabilities, further treating the water to reduce phosphorous and nitrogen, which is crucial if the discharged effluent is recycled in water catchment or environmental areas.

O-3 models, on the other hand, use Ozone as a final disinfectant, producing oxygen as a by-product, making it the most environmentally friendly ATU option.

In-Depth Look