Woodford County, Illinois
Spring Bay Township is a township in Woodford County, Illinois. Septic permits inside Spring Bay Township come from Woodford County (Woodford County Health Department · 309-467-3064). 7 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Woodford County page.
Spring Bay Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
New structures and alterations on land in the unincorporated portion of Woodford County, including unincorporated land inside Spring Bay township; applies to the county zoning permit, not a township permit
“no building or other structure shall be erected, constructed, reconstructed, altered, converted, removed, added to, used or the use therein changed unless and until a zoning permit is obtained from the zoning administrator.”
Road setbacks for principal and accessory structures on unincorporated land inside Spring Bay township, applying to all zoning districts; side and rear yard setbacks by district not captured
setback from township road centerline: 65 feet (or 30 feet from the right-of-way line, whichever is greater) · setback from township road right-of-way line: 30 feet (or 65 feet from the centerline of the road, whichever is greater)
“township road: 65 feet from the centerline of the road or 30 feet from the right-of-way line, whichever is greater.”
On-site private sewage systems for dwellings on unincorporated land inside Spring Bay township; the Woodford County Health Department, not the township, issues the septic permit
“woodford county health department 1831 s. main street, eureka, il 61530 fax: (309) 467-5104 health.woodfordcountyil.gov phone: (309) 467-3064 application/permit for private sewage disposal system non-refundable fee: $225.00”
New or replacement private sewage (septic) systems for dwellings on unincorporated land inside Spring Bay township
non-refundable septic permit application fee: 225 USD
“is the property located within a 100-year floodplain? yes no if yes – stop – contact woodford county zoning prior to submitting septic permit application”
Development inside the special flood hazard area (SFHA) on unincorporated land inside Spring Bay township
“6. to undertake any development in the sfha.”
County zoning permit fees for unincorporated land inside Spring Bay township
“the fee schedule is located under "zoning resources" on the county website or contact the office for more information.”
County zoning permit process for unincorporated land inside Spring Bay township
“typically, we can process an application that day if we have the elevation drawing, location, use, dimensions and construction cost of the structure.”
We looked and could not find an official answer yet. Silence is not permission; ask Spring Bay Township or Woodford 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 Spring Bay Township publishes no rule on the point, not that none exists. Woodford County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Spring Bay Township means bringing your own water and power. The kit we’d start with:
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.