Aerobic / ATU Septic System Cost in North Dakota
Estimated 2026 installed range: $7,600 – $17,100
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Statewide cost drivers here are clay soils and deep frost. Locally, deep frost and remote sites raise costs. That is why a aerobic / atu system in North Dakota can land well above or below the national range of $8,000–$18,000.
All system types in North Dakota
| 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 North Dakota · Aerobic / ATU system overview