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Septic System Costs in Idaho (2026)

Based on BLS wage data, septic system in Idaho costs an average of $7,830, ranging from $7,686 to $8,038.

Idaho Average $7,830

Septic System Costs by City in Idaho

Boise $8,038 Meridian $7,766 Nampa $7,686

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Alex - Founder

Reviewed by

Alex Johnson, P.E.

Mechanical Engineer • 15+ Years Home Repair Experience • Licensed Contractor

All cost data on this page has been verified against BLS and Census Bureau records. See our methodology →

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