Chicago, IL · Updated 2026

How Much Does Septic System Installation Cost in Chicago, IL?

Average septic system installation costs in Chicago range from $15,708 to $21,252. Get a free, customized estimate below.

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Septic System Installation Cost Breakdown — Chicago, IL

ItemUnitQtyUnit PriceTotal
Septic Tank (1500 gal)each1$3840.00$3840.00
Drain Field & Gravellinear ft200$42.00$8400.00
Excavation & Backfilllump sum1$2160.00$2160.00
Labor & Permitshr40$102.00$4080.00
Estimated Total$18,480.00

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

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Material line 1

Line total$3,840

Material line 2

Line total$8,400

Material line 3

Line total$2,160

Material line 4

Line total$4,080

Frequently Asked Questions — Septic System Installation in Chicago

How much does septic system installation cost in Chicago, IL?

The average cost for septic system installation in Chicago, IL ranges from $15,708 to $21,252, depending on project scope, materials, and labor rates. Chicago costs are above the national average due to higher labor and material costs in the region.

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

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 Chicago?

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