Aerobic / ATU Septic System Cost in New Jersey
Estimated 2026 installed range: $10,200 – $23,000
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Open the cost calculatorWhy New Jersey prices differ
Statewide cost drivers here are freeze depth, bedrock and older housing stock. Locally, strict septic rules in many counties require engineered designs. That is why a aerobic / atu system in New Jersey can land well above or below the national range of $8,000–$18,000.
All system types in New Jersey
| System | Low | High |
|---|---|---|
| Conventional | $4,500 | $10,200 |
| Chamber | $6,400 | $14,100 |
| Aerobic / ATU | $10,200 | $23,000 |
| Mound | $12,800 | $28,200 |
| Sand filter | $10,200 | $20,500 |
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 New Jersey · Aerobic / ATU system overview