Cass County, Illinois
Hagener Township is a township in Cass County, Illinois. Septic permits inside Hagener Township come from Cass County. 9 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Cass County page.
Residences constructed in the Agricultural District on unincorporated land inside Hagener Township, if that district is mapped there.
minimum living area: >= 800 square feet (Residence constructed in Agricultural District.) · minimum residence width: >= 14 feet (Residence constructed in Agricultural District.)
“The minimum living area of any residence constructed in an agricultural district must be at least eight hundred (800) square feet.”
Single-family residence or detached structure in the Agricultural District on unincorporated land inside Hagener Township, if that district is mapped there.
minimum lot size: >= 3 acres (Single-family residence or detached structure in Agricultural District.)
“The minimum lot size permitted for the construction of a single-family residence or detached structure in an agricultural district is a minimum of three (3) acres.”
Mobile homes in the Agricultural District on unincorporated land inside Hagener Township, if that district is mapped there.
“Mobile Home Units – No mobile home shall be used as dwelling unit on any lot, tract, or parcel, other than a lot, tract or parcel approved as a mobile home park as hereinafter provided, except that a mobile home unit may be occupied and maintained by :”
Private sewage disposal systems inside Hagener Township, which is within Cass County.
“HEALTH DEPARTMENT shall mean the Cass County Health Department, an agency of the Cass County Board of Health.”
Construction, alteration, or extension of an individual sewage disposal system inside Hagener Township.
permit validity: 6 months (Void if construction has not started within that period.)
“It shall be unlawful for any person to construct, alter or extend individual sewage disposal systems within Cass County unless he holds a valid permit issued by the Health Department stating the name of such person for which the specific construction, alteration, or extension is proposed.”
A homeowner-installed private sewage system serving the homeowner's personal residence inside Hagener Township.
“An individual sewage disposal system which has been installed by a homeowner for his personal residence shall not be covered or placed in operation until the said installation shall have been inspected and written approval of the said system shall have been issued by the Health Department.”
Private sewage disposal systems inside Hagener Township.
“All private sewage disposal systems within the limits of Cass County shall be installed and/or serviced by Illinois licensed private sewage disposal system contractors; provided however, that a home owner may install and/or service a private sewage disposal system which serves his own personal residence.”
A proposed private sewage disposal system inside Hagener Township where public or community sewerage is available.
reasonable sewer distance: <= 1000 feet (Commercial establishment, subdivision, or multi-family dwelling; connection must be practical and permitted by the controlling sewer authority.)
“The Board of Health or its Authorized Representative may refuse to grant a permit for the construction of a private sewage disposal system where public or community sewerage systems are available.”
Zoning-permit applications for unincorporated land inside Hagener Township subject to the Cass County Zoning Ordinance.
application copies: 3 copies (County Zoning Enforcement Officer forms.)
“Applications for a permit shall be made in triplicate to the County Zoning Enforcement Officer on forms furnished by the County Zoning Enforcement Officer and shall include the following where applicable:”
We looked and could not find an official answer yet. Silence is not permission; ask Hagener 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 Hagener 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 Hagener Township means bringing your own water and power. The kit we’d start with:
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