Mound Septic System Cost in Wyoming
Estimated 2026 installed range: $10,000 – $22,000
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Open the cost calculatorWhy Wyoming prices differ
Statewide cost drivers here are hard ground, terrain and remote access. Locally, remote sites and hard ground raise labor and equipment costs. That is why a mound system in Wyoming can land well above or below the national range of $10,000–$22,000.
All system types in Wyoming
| System | Low | High |
|---|---|---|
| Conventional | $3,500 | $8,000 |
| Chamber | $5,000 | $11,000 |
| Aerobic / ATU | $8,000 | $18,000 |
| Mound | $10,000 | $22,000 |
| Sand filter | $8,000 | $16,000 |
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.