Aerobic / ATU Septic System Cost

Typical installed range: $8,000 – $18,000

What it is

Aerobic treatment units add oxygen to break down waste faster. They are used on tight or wet lots, require electricity, and need periodic maintenance.

When you need it

Regulations vary by state and county. In general, this system is required when a conventional drain field is not allowed by soil, water table or setback rules. Your local health department makes that determination after a soil test.

Cost breakdown

See the other system types: Conventional, Chamber, Mound, Sand filter.