Direct answer
Most Cincinnati-area residential tanks are 1,000-1,500 gallons (Hamilton/Warren/Clermont county codes). We confirm size during inspection — older tanks (pre-1980) may be smaller and need upgrading.
Authoritative sources
- US EPA SepticSmart ↗
EPA-recommended pumping schedules and inspection cadence for residential septic systems.
- Hamilton County Public Health ↗
County health department oversight of septic permits and inspections in Hamilton County, OH.
- Warren County Combined Health District ↗
Permit authority for septic installation and replacement in Warren County, OH.
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We connect Greater Cincinnati homeowners with Ohio-licensed septic contractors in our partner network. Mon–Sat 7am–7pm · Emergency 24/7.