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Septic System Costs in New Hampshire (2026)

Based on BLS wage data, septic system in New Hampshire costs an average of $9,576, ranging from $9,268 to $9,857.

New Hampshire Average $9,576

Septic System Costs by City in New Hampshire

Manchester $9,603 Nashua $9,268 Concord $9,857

Compare Septic System Costs in Nearby States

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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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