McHenry County, Illinois
Riley Township is a township in McHenry County, Illinois. Septic permits inside Riley 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.
Riley Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Construction activities in unincorporated portions of Riley Township under McHenry County building jurisdiction.
“The Building Division reviews construction documents, issues building permits and conducts inspections of all construction activities in unincorporated McHenry County.”
Septic systems and wells on land inside Riley Township served by McHenry County Environmental Health.
“Septic and well permits are managed by the Health Dept.'s Environmental Health division.”
Construction, repair, modification, replacement, or abandonment of an onsite wastewater treatment system in Riley Township.
“Required to construct, repair, modify, replace, or abandon an onsite wastewater treatment system (septic system) or water well in McHenry County.”
Construction, repair, modification, replacement, or abandonment of a water well in Riley Township.
“Required to construct, repair, modify, replace, or abandon an onsite wastewater treatment system (septic system) or water well in McHenry County.”
We looked and could not find an official answer yet. Silence is not permission; ask Riley 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 Riley 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 Riley Township means bringing your own water and power. The kit we’d start with:
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