Mound Septic System Cost in New Mexico
Estimated 2026 installed range: $9,500 – $20,900
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Open the cost calculatorWhy New Mexico prices differ
Statewide cost drivers here are hard ground, terrain and remote access. Locally, caliche and aridity require different drain field sizing. That is why a mound system in New Mexico can land well above or below the national range of $10,000–$22,000.
All system types in New Mexico
| 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.