Mound Septic System Cost

Typical installed range: $10,000 – $22,000

What it is

A mound system raises the drain field above the ground when the water table is high or soil is shallow. It is one of the most expensive common options.

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, Aerobic / ATU, Sand filter.