Sullivan County, Indiana
Cass Township is a township in Sullivan County, Indiana. Septic permits inside Cass Township come from Sullivan County (Sullivan County Health Department · (812) 268-0224). 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 Sullivan County page.
Cass Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Indiana building rules (675 IAC 13, 14, 16, 17, 18, 19, 20 and 22) as they apply inside Cass township, Sullivan County, Indiana
“building rules adopted by the commission in 675 iac 13, 675 iac 14, 675 iac 16, 675 iac 17, 675 iac 18, 675 iac 19, 675 iac 20, and 675 iac 22 are collectively a code of building laws required to be enforced at the local level of government under ic 36-7-2-9.”
Residential onsite sewage (septic) systems in Cass township, Sullivan County, Indiana, permitted by the Sullivan County Health Department
“please contact the sullivan county health department at (812) 268-0224 with any questions.”
Installing, repairing, replacing or altering a residential onsite sewage system inside Cass township, Sullivan County, Indiana
“it is ultimately the responsibility of the property owner to ensure that an onsite permit is obtained before an onsite system is installed, repaired, replaced and/or altered”
Septic system installation inspection inside Cass township, Sullivan County, Indiana
“you must call the sullivan county health department before breaking ground.”
Residential septic permit fee for work inside Cass township, Sullivan County, Indiana
septic permit fee: 100 USD (due when installation plans are approved; from 2019-dated county procedure)
“a permit fee will be due at this time ($100).”
Residential septic permit process for work inside Cass township, Sullivan County, Indiana; no building permit process was found
“contact an irss certified soil scientist and set up an appointment for soils analysis.”
We looked and could not find an official answer yet. Silence is not permission; ask Cass Township or Sullivan 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 Cass Township publishes no rule on the point, not that none exists. Sullivan County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Cass Township means bringing your own water and power. The kit we’d start with:
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