McHenry County, Illinois
Greenwood Township is a township in McHenry County, Illinois. Septic permits inside Greenwood Township come from McHenry County (McHenry County Department of Health, Environmental Health Division · (815) 334-4000). 4 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the McHenry County page.
Greenwood Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Zoning districts of the McHenry County UDO that apply to unincorporated land inside Greenwood township
“the udo takes these policies as its base and provides a set of development requirements, generally organized by zoning district, each containing specific regulations key to those policies.”
Septic systems on land inside Greenwood township, administered by McHenry County Department of Health (Environmental Health Division)
“a permit is required from the mchenry county department of health to install, modify, alter, extend, repair, replace or abandon a septic system in mchenry county.”
Land divisions and subdivisions of land inside Greenwood township that is outside municipal boundaries
“the unified development ordinance (udo) integrates zoning, subdivision, and related development regulations into one consolidated ordinance.”
Septic permit application process for land inside Greenwood township (building permit process not established)
“permit applications may be submitted by mail or in person at the environmental health division of the mchenry county department of health.”
We looked and could not find an official answer yet. Silence is not permission; ask Greenwood Township or McHenry County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Greenwood Township publishes no rule on the point, not that none exists. McHenry County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Greenwood Township means bringing your own water and power. The kit we’d start with:
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