Septic System Installation cost in Lehi, UT
Lehi homeowners typically pay $6,250 – $20,800 for septic system installation. Local labor and materials price 4% above the national average.
Lehi average
$13,500
Typical low
$6,250
Typical high
$20,800
Per system
$6,250 – $20,800
Sample ZIP
What drives Lehi pricing
Local labor
Licensed trade labor in Lehi runs about 104% of the national average, and the best crews book out fastest in spring and early summer.
Permits & code
Most Lehi, UT projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.
Climate & conditions
Utah weather drives material choices here, so ask contractors what they install most often in Lehi and why.
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Estimated project cost
$23,940 – $32,775
Most homeowners pay around $28,358
Compare quality / material level
Cost by material in Lehi
Installed Lehi pricing per system.
| Option | Installed cost |
|---|---|
| Conventional gravity system | $8,400 – $11,500 |
| Chamber system | $11,500 – $15,100 |
| Pressure-dose / mound system | $15,100 – $19,600 |
| Aerobic treatment unit | $19,600 – $27,000 |
Where the money goes in Lehi
A typical $13,500 Lehi project, broken down by line item.
- Labor0.45% · $61
- Materials0.38% · $51
- Permits & inspections0.05% · $7
- Overhead & profit0.12% · $16
Common add-ons
Extras that show up on Lehi quotes but rarely in the headline price.
Perc test and design
Tank pumping and abandonment
Extra drain field length
Effluent filter and alarm
Ways to save in Lehi
- Schedule the perc test early — a failed test changes the whole design.
- Combine excavation with other sitework already planned.
- Collect three written bids on an identical scope — spreads of 20–40% are normal.
- Book in the off-season and stay flexible on the start date to save 5–15%.
- Bundle nearby work into one mobilization so you only pay setup and travel once.
- Ask what the contractor would change to cut 10% without hurting durability.
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