Direct answer
Check your water bill — if there’s no sewer charge, you’re on septic. Or check the property: if you have a green/cap-style access lid in the yard, that’s a septic tank. Most rural Cincinnati and exurban properties are septic.
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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