Madison County, Illinois
Alton Township is a township in Madison County, Illinois. Septic permits inside Alton Township come from Madison County (Madison County Planning & Development — Private Sewage Permits & Inspections · (618)296-4663). 11 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.
Alton 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 inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“prior to commencing construction, a contractor is required to apply for a building permit and submit plans of the proposed project.”
Construction inside Alton township outside the City of Alton's limits (unincorporated Madison County), administered by the Madison County Building & Zoning Department.
“the following codes have been adopted: 2012 international building code”
Permitted construction inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“a building inspector will check progress at selected milestones to ensure that all codes are adequately met.”
Land inside Alton township outside the City of Alton's limits (unincorporated Madison County). Alton township's official site lists only assessor, general assistance and supervisor offices and does not show a township zoning ordinance, so county zoning is the operative rule here.
“the zoning ordinance is used to regulate land use and development in madison county.”
Zoning districts for land inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“zoning map for unincorporated madison county.”
Private sewage systems on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
Installation of a private sewage system on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
Installation of a private sewage system on land inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“inspections and permits for the installation of private sewage systems in accordance with state of illinois and u.s. epa requirements”
Subdivision and site development inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“permits for grading, site development and subdivision improvements.”
Building permits inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“click here for building permit application & fee schedule”
Building permits inside Alton township outside the City of Alton's limits (unincorporated Madison County).
“building permits must be applied for in person at the building & zoning department counter.”
We looked and could not find an official answer yet. Silence is not permission; ask Alton 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 Alton 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 Alton Township means bringing your own water and power. The kit we’d start with:
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