St. Clair County, Illinois
Shiloh Valley Township is a township in St. Clair County, Illinois. Septic permits inside Shiloh Valley Township come from St. Clair County (St. Clair County Health Department – Water & Private Sewage · 618-233-7769). 11 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the St. Clair County page.
Shiloh Valley 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 inside Shiloh Valley township, where the St. Clair County zoning code applies in the absence of a township ordinance found in research; not municipal land
“it is hereby declared that the provisions of this code shall apply to all unzone municipalities and to all properties in the unincorporated part of st. clair county as provided herein, except those properties occupied by scott air force base.”
Zoning districts of St. Clair County that apply to unincorporated land inside Shiloh Valley township
“division ii – “rr-1” and “rr-3” – rural residential districts”
Land zoned RR-1 (rural residential) in unincorporated Shiloh Valley township under the St. Clair County zoning code
minimum lot area: >= 1 acre · minimum lot width at building line: >= 125 feet
“3 rr-1 1 per 1 acre 1 acre 125’ 150’ 25’ 25’ 40 15”
“4 sr-1 1 per 20,000 sq. ft. 100’ 150’ 25’ 25’ 30 15”
Land zoned RR-1 (rural residential) in unincorporated Shiloh Valley township under the St. Clair County zoning code
front yard depth: >= 25 feet · side yard abutting a street depth: >= 25 feet · side yard abutting a lot, total for both sides: >= 40 feet · side yard abutting a lot, minimum either side: >= 15 feet
“3 rr-1 1 per 1 acre 1 acre 125’ 150’ 25’ 25’ 40 15”
“4 sr-1 1 per 20,000 sq. ft. 100’ 150’ 25’ 25’ 30 15”
Recreational vehicle parks on unincorporated land inside Shiloh Valley township; this is not a general rule for living in an RV on private land
maximum temporary stay in an RV park: <= 30 days
“recreational vehicle parks, for temporary location not to exceed thirty (30) days.”
Manufactured home parks on unincorporated land in Shiloh Valley township; placement of a single manufactured home outside a park was not verified
minimum manufactured home park tract: >= 10 acres
“a manufactured home park shall be located on a tract of land not less than ten (10) acres in area, with minimum width and depth dimensions of not less than four hundred (400) feet.”
Individual domestic sewage disposal (septic) systems on land inside Shiloh Valley township, administered by the St. Clair County Health Department
“it shall be unlawful for any person to construct, alter or extend individual domestic sewage disposal systems within st. clair county unless he/she holds a valid permit issued by the health department”
Constructing, altering, or extending an individual septic system on land inside Shiloh Valley township, issued by the St. Clair County Health Department
“a permit shall only be.issued to a homeowner and/or a st. clair county licensed private sewage disposal system installation contractor installing a private sewage disposal system.”
Division of land into zoning lots on unincorporated land inside Shiloh Valley township
“no land or zoning lot shall hereafter be divided into two (2) or more zoning lots unless all lots resulting from each such division shall conform with the applicable regulations of the zoning district where the property is located”
We looked and could not find an official answer yet. Silence is not permission; ask Shiloh Valley Township or St. Clair 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 Shiloh Valley Township publishes no rule on the point, not that none exists. St. Clair County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Shiloh Valley Township means bringing your own water and power. The kit we’d start with:
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