Madison County, Illinois
St. Jacob Township is a township in Madison County, Illinois. Septic permits inside St. Jacob Township come from Madison County (Madison County Planning & Development — Private Sewage Permits & Inspections · (618)296-4663). 5 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Madison County page.
St. Jacob Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Unincorporated land in St. Jacob Township; this does not establish zoning authority for the incorporated Village of St. Jacob.
“This is located in an “A” Agricultural District in St. Jacob Township along Cypress Road, St. Jacob, Illinois, County Board District #4, PIN#s 05-1-23-17-00-000-016 & 05-1-23-20-00-000-002; and,”
Mapped County zoning for unincorporated land in St. Jacob Township.
“Date of map: 9th January, 2007 [...] Zoning "A" Agricultural District "B-2" General Business District "B-4" Wholesale Business District "M-1" Limited Manufacturing "R-1" Single-Family Dwelling District "R-2" Single-Family Dwelling District "R-3" Single-Family Dwelling District "R-4" Single-Family Dwelling District [...] Note: This map was created from recorded sources and is subject to revision. [...] Update of map: 22nd October, 2007”
Private sewage disposal systems in unincorporated St. Jacob Township.
“The Department is authorized and directed to make inspections as are necessary to determine satisfactory compliance with the chapter. Upon receipt of a notification by the applicant, a designated member of the Department of Building and Zoning of the county shall, within two days, inspect the installed or partially installed private sanitation system of the person, firm, corporation or organization.”
Individual sewage disposal systems installed by a homeowner for the homeowner's personal residence in unincorporated St. Jacob Township.
“An individual sewage disposal system which has been installed by a home owner for his or her personal residence shall not be covered or placed in operation until the installation shall be inspected and written approval of the system shall have been issued by the Department.”
Construction or deepening of water wells in unincorporated St. Jacob Township.
“No water well shall be constructed or deepened except in accordance with this chapter, and it shall be unlawful to proceed with such work unless a permit has first been obtained from the Health Department.”
We looked and could not find an official answer yet. Silence is not permission; ask St. Jacob Township or Madison 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 St. Jacob Township publishes no rule on the point, not that none exists. Madison County’s page lists the county offices to call.
Off-grid gear
Going off-grid in St. Jacob Township means bringing your own water and power. The kit we’d start with:
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