Aerobic / ATU Septic System Cost in Pennsylvania
Estimated 2026 installed range: $9,000 – $20,200
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Statewide cost drivers here are freeze depth, bedrock and older housing stock. Locally, septic permits are handled by local sewage enforcement officers. That is why a aerobic / atu system in Pennsylvania can land well above or below the national range of $8,000–$18,000.
All system types in Pennsylvania
| System | Low | High |
|---|---|---|
| Conventional | $3,900 | $9,000 |
| Chamber | $5,600 | $12,300 |
| Aerobic / ATU | $9,000 | $20,200 |
| Mound | $11,200 | $24,600 |
| Sand filter | $9,000 | $17,900 |
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 Pennsylvania · Aerobic / ATU system overview