Backyard composting is legal in Hamilton County, and no county permit is needed for a home compost pile. Ohio bans yard waste from landfills (ORC 3734.121 / OAC 3745-27-70), so grass and leaves must be composted, mulched, or set out for yard-waste collection.
Residents may compost leaves, grass, and food scraps at home; the Hamilton County Recycling & Solid Waste District (hcdoes.org) actively promotes it and offers compost-bin programs. No county permit is required for a backyard pile. Ohio's yard-waste landfill ban means yard trimmings cannot be thrown in landfill-bound trash; they must be composted, mulched, or diverted to yard-waste collection. Keep a compost pile from becoming a nuisance (odor, vermin), or it can be cited under municipal or township nuisance law. Large-scale composting facilities are separately regulated by Ohio EPA.
Nuisance compost piles can be abated under local nuisance rules; illegally landfilling yard waste violates Ohio's disposal ban enforced by the solid-waste district and Ohio EPA.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Cincinnati's composting rules stack up against other locations.
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