Direct answer
Mostly. Concrete dominates Ohio installations; fiberglass and polyethylene are also approved. Steel tanks are obsolete (corrode through in 20-30 years). If your tank is steel, plan for replacement when next servicing.
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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