Mound Septic System Cost in Texas
Estimated 2026 installed range: $9,800 – $21,600
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Open the cost calculatorWhy Texas prices differ
Statewide cost drivers here are high water tables and clay soils. Locally, clay soils and local health department rules vary widely across the state. That is why a mound system in Texas can land well above or below the national range of $10,000–$22,000.
All system types in Texas
| System | Low | High |
|---|---|---|
| Conventional | $3,400 | $7,800 |
| Chamber | $4,900 | $10,800 |
| Aerobic / ATU | $7,800 | $17,600 |
| Mound | $9,800 | $21,600 |
| Sand filter | $7,800 | $15,700 |
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.