Aerobic / ATU Septic System Cost in Michigan
Estimated 2026 installed range: $7,600 – $17,100
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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 aerobic / atu system in Michigan can land well above or below the national range of $8,000–$18,000.
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 aerobic / atu systems are for
Aerobic treatment units add oxygen to break down waste faster. They are used on tight or wet lots, require electricity, and need periodic maintenance.
Related pages
All septic costs in Michigan · Aerobic / ATU system overview