Macoupin County, Illinois
Nilwood Township is a township in Macoupin County, Illinois. Septic permits inside Nilwood Township come from Macoupin County (Macoupin County Public Health Department — Environmental Health · 217-839-4111). 3 rules below are quoted from official sources and independently re-checked, most recently on November 11, 2026. Rules for unincorporated land are on the Macoupin County page.
Nilwood Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
New construction requiring a septic system in unincorporated Macoupin County, including unincorporated land in Nilwood township. The page does not name Nilwood township.
building program permit fee: 100 USD
“cost for permit: $100.00 - required in only unincorporated macoupin county - who may need to apply: any new construction that requires a septic system”
Unincorporated land in Macoupin County, which includes land in Nilwood township outside any city or village limits. The page does not name Nilwood township; no township zoning ordinance was found.
“please be aware that the unincorporated parts of the county (not in city or village limits) have no zoning.”
Private sewage disposal systems inside Nilwood township, via the Macoupin County Public Health Department; the county page says required in all of Macoupin County.
private septic system permit fee: 300 USD (exception if public sewer is available)
“private septic system permit $300.00 septic contractors license $75.00 - required in all of macoupin county. exception for private septic system permit if public sewer is available.”
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.
Off-grid gear
Going off-grid in Nilwood Township means bringing your own water and power. The kit we’d start with:
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