Mound Septic System Cost in Michigan
Estimated 2026 installed range: $9,500 – $20,900
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Open the cost calculatorWhy Michigan prices differ
Statewide cost drivers here are clay soils and deep frost. Locally, sandy soils are common but local health departments vary widely. That is why a mound system in Michigan can land well above or below the national range of $10,000–$22,000.
All system types in Michigan
| System | Low | High |
|---|---|---|
| Conventional | $3,300 | $7,600 |
| Chamber | $4,800 | $10,400 |
| Aerobic / ATU | $7,600 | $17,100 |
| Mound | $9,500 | $20,900 |
| Sand filter | $7,600 | $15,200 |
What mound systems are for
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.