Septic System Costs in Rhode Island (2026)

Based on BLS wage data, septic system in Rhode Island costs an average of $9,684, ranging from $9,463 to $9,906.

Septic System Costs by City in Rhode Island

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 →