Henry County, Illinois
Cambridge Township is a township in Henry County, Illinois. Septic permits inside Cambridge Township come from Cambridge Township. 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 Henry County page.
Cambridge Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Construction, enlargement, alteration, repair, movement, demolition, or occupancy change of a building or structure in the unincorporated portion of Cambridge Township.
“Failure to secure building permit prior to starting work is an ordinance violation which may result in a stop work order (IBC 114) and perhaps fines and penalties up to $500 (IBC 113).”
Buildings and structures in the unincorporated portion of Cambridge Township, where Henry County's unincorporated-area building program applies.
building code edition: International Building Code 2000 Edition (County instructions state it replaced the Uniform Building Code 1988 Edition on April 17, 2001.)
“replaced the code with International Building Code 2000 Edition on April 17, 2001.”
Private sewage disposal systems for residents in Cambridge Township without public sewer access.
“Our office regulates these systems to ensure: new installations meet code requirements and are properly installed, malfunctioning systems are repaired promptly to prevent contamination, and all repairs and new installations are permitted through our office.”
Private sewage-system repairs and new installations in Cambridge Township when public sewer is unavailable.
“and all repairs and new installations are permitted through our office.”
Human-occupancy uses relying on private sewage disposal in Cambridge Township.
public sewer availability distance: <= 200 feet (Measured from the property line.)
“No privy, septic tank or private means of sewage disposal shall be maintained on property having a sanitary sewage system available;”
Properties inside Cambridge Township served by a publicly operated sanitary-waste collection and disposal system available within 200 feet of the property line.
public sewer availability distance: <= 200 feet (Measured from the property line.)
“Where a publicly operated system for collection and disposal of sanitary wastes is available within two-hundred (200) feet of the property line, the utilization of such public sewage systems shall be considered the only safe and sanitary means of sewage and excreta disposal.”
Agricultural buildings and structures in the unincorporated portion of Cambridge Township.
“Agricultural buildings/structures are exempt from building code regulations (see ag exemption).”
Subdivision or re-division of unincorporated Cambridge Township land under Henry County's subdivision and health review programs.
final plat fee for 1-3 lots: 50 USD (Plus $15 per lot; applies to plats without new streets or access easements requiring the listed reviews.)
“No plat, subdivision, or any changes in lot boundaries shall be approved and recorded unless every proposed lot is considered suitable for an approved private sewage disposal system.”
Henry County building-permit applicants for the unincorporated portion of Cambridge Township.
“Henry County Health Department must approve plot plan before building permit can be issued.”
We looked and could not find an official answer yet. Silence is not permission; ask Cambridge Township or Henry 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 Cambridge Township publishes no rule on the point, not that none exists. Henry County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Cambridge Township means bringing your own water and power. The kit we’d start with:
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