Mound Septic System Cost in Kentucky
Estimated 2026 installed range: $8,800 – $19,400
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Open the cost calculatorWhy Kentucky prices differ
Statewide cost drivers here are high water tables and clay soils. Locally, karst geology may require special siting and extra testing. That is why a mound system in Kentucky can land well above or below the national range of $10,000–$22,000.
All system types in Kentucky
| System | Low | High |
|---|---|---|
| Conventional | $3,100 | $7,000 |
| Chamber | $4,400 | $9,700 |
| Aerobic / ATU | $7,000 | $15,800 |
| Mound | $8,800 | $19,400 |
| Sand filter | $7,000 | $14,100 |
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.