Cass County, Indiana
Jefferson Township is a township in Cass County, Indiana. Septic permits inside Jefferson Township come from Jefferson Township. 6 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Cass County page.
Jefferson Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Land inside Jefferson township that is unincorporated (outside any city or town plan-commission area). County zoning, not a township ordinance, is the zoning text located.
“this ordinance shall apply to all unincorporated land within cass county”
County zoning districts applying to unincorporated land inside Jefferson township
“302 establishment of districts: the jurisdictional area of the county divided into the following zoning districts for purposes as stated:”
Single-family lots in the RR (rural residential) district on unincorporated land inside Jefferson township, Cass County, Indiana
minimum lot area, no central sewage: >= 43560 square feet (RR district) · minimum lot area, with central sewage: >= 20000 square feet (RR district; central sewage available)
“1. minimum lot area (a) no central sewage with central sewage 43,560 24,000 43,560 20,000 36,000 14,000”
“1. minimum lot area (a) no central sewage with central sewage 43,560 24,000 43,560 20,000 36,000 14,000”
Lots in the RR (rural residential) district on unincorporated land inside Jefferson township
maximum lot coverage: <= 30 percent (RR district; footnote (c) not read)
“4. maximum lot coverage (c) 10 or 30* 30 40 80 80 50 50 50 50”
Residential onsite sewage (septic) systems on land inside Jefferson township, Cass County, Indiana
“local health departments issue more than 15,000 permits per year for new systems, and about 6,000 permits for repairs.”
We looked and could not find an official answer yet. Silence is not permission; ask Jefferson Township or Cass 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 Jefferson Township publishes no rule on the point, not that none exists. Cass County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Jefferson Township means bringing your own water and power. The kit we’d start with:
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