San Antonio, TX · Updated 2026

How Much Does Septic System Installation Cost in San Antonio, TX?

Average septic system installation costs in San Antonio range from $11,781 to $15,939. Get a free, customized estimate below.

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Septic System Installation Cost Breakdown — San Antonio, TX

ItemUnitQtyUnit PriceTotal
Septic Tank (1500 gal)each1$2880.00$2880.00
Drain Field & Gravellinear ft200$31.50$6300.00
Excavation & Backfilllump sum1$1620.00$1620.00
Labor & Permitshr40$76.50$3060.00
Estimated Total$13,860.00

* Prices are estimates based on San Antonio market rates. Actual costs may vary based on project specifics.

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Labor line 1

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Material line 1

Line total$2,880

Material line 2

Line total$6,300

Material line 3

Line total$1,620

Material line 4

Line total$3,060

Frequently Asked Questions — Septic System Installation in San Antonio

How much does septic system installation cost in San Antonio, TX?

The average cost for septic system installation in San Antonio, TX ranges from $11,781 to $15,939, depending on project scope, materials, and labor rates. San Antonio costs are close to the national average.

How do I get a free septic system installation estimate in San Antonio?

Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly.

What factors affect septic system installation costs in San Antonio?

Key factors include project size and complexity, material quality, labor rates in San Antonio (TX), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.