Backyard composting is legal and encouraged. Household compost piles are exempt from state licensing, and Wisconsin bans yard waste (leaves, grass clippings, brush) from landfills, so composting or mulching is effectively the required alternative for yard debris.
Under NR 502.12, households and small operations keeping 50 cubic yards or less on-site are exempt from DNR composting licenses, so ordinary backyard bins and piles need no permit. Wisconsin's landfill ban on yard waste (Wis. Stat. 287.07, effective since 1993) prohibits disposing leaves, grass clippings, yard/garden debris and brush up to 6 inches diameter in landfills, which is why the DNR steers residents to composting and grasscycling. Keep piles reasonable to avoid nuisance/odor and rodent issues; some cities/villages add setback or containment rules for compost bins.
Illegally landfilling yard waste violates Wis. Stat. 287.07 and DNR rules. Nuisance-level compost odor, vectors or runoff can be abated under municipal nuisance codes with cost recovery.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Waukesha County, WI
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Waukesha County, WI
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See how Waukesha County's composting rules stack up against other locations.
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