SepticTankHub Research
Original data on America's septic systems
We maintain the largest directory of septic companies in the country — and we turn that position into public data: national statistics, cost indexes, regulation databases, and annual surveys of the pros who pump America's tanks. Everything here is free to cite with attribution.
Septic Tank Size Calculator
Bedroom- and code-based tank sizing with state minimums. Free to embed.
Explore →Septic System Statistics
The citation source for every septic number: households on septic, systems by state, costs, and industry size.
Coming July 2026Septic Cost Index by State
Permit fees and pumping/install costs across all 50 states, from published fee schedules and our directory data.
Coming August 2026The Septic Capitals of America
Density rankings: the states, metros, and counties that rely on septic the most.
Coming September 2026Septic Regulations by State
Tank minimums, setbacks, permit fees, and point-of-sale rules — all 50 states.
Coming Q4 2026U.S. Septic Failure Risk Map
County-level risk index built from USDA soil suitability, housing age, and system density.
Coming January 2027Our data standards
Media inquiries: [email protected] · Data questions & licensing: [email protected] · See also our press page and verification methodology.
