Tazewell County, Illinois
Mackinaw Township is a township in Tazewell County, Illinois. Septic permits inside Mackinaw Township come from Tazewell County (Tazewell County Health Department · 309-925-5511). 12 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Tazewell County page.
Mackinaw 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 dwellings and other structures (other than commercial and industrial) built on land inside Mackinaw township outside Village of Mackinaw limits
“prior to the issuance of a building permit by the tazewell county community development department for construction of all structures other than commercial and industrial”
Building plan review for structures in unincorporated Tazewell County, including land inside Mackinaw township outside Village of Mackinaw limits
“plans are reviewed for compliance where applicable with the tazewell county code, state of illinois plumbing code, 2018 international residential code, 2017 national electric code and illinois energy conservation code”
Land inside Mackinaw township outside the Village of Mackinaw limits (unincorporated Tazewell County), where zoning is administered by the county
“the department is responsible for the issuance of building permits, zoning compliance certificates and regulation of construction and all use activities in the unincorporated areas of tazewell county.”
Unincorporated Tazewell County land inside Mackinaw township outside Village of Mackinaw limits
“the unincorporated areas of the county are divided into “zoning districts.” particular types of uses are allowed in each of these districts. the zoning ordinance lists these uses.”
Principal and accessory structures in the R-1 and R-2 districts of unincorporated Tazewell County, which includes land inside Mackinaw township outside Village of Mackinaw limits, when that land is mapped in those districts
principal structure rear yard setback: 20 feet · principal structure side yard setback: 10 feet · accessory structure rear yard setback: 5 feet · accessory structure side yard setback: 5 feet
“rear & side yard setbacks principal structure accessory structure rear side rear side r-1 & r-2 20' 10' 5' 5' r-r 30' 30' 15' 15'”
“rear & side yard setbacks principal structure accessory structure rear side rear side r-1 & r-2 20' 10' 5' 5' r-r 30' 30' 15' 15'”
“a-1, a-2 & cons. 50' 30' 25' 15' c-1 & c-2 20' 10' 5' 5'”
Private sewage disposal for a new dwelling inside Mackinaw township, through the Tazewell County Health Department (phone 309-477-2223 per the county brochure)
“copy of septic permit from the tazewell county health department approving sewage disposal facility, when applicable.”
New residential construction with a septic system inside Mackinaw township
septic permit processing time: 2 working days
“copy of septic permit from the tazewell county health department approving sewage disposal facility, when applicable.”
Land divisions in unincorporated Tazewell County inside Mackinaw township
“additional departmental functions include the administration and enforcement of the subdivision ordinance, erosion, sediment and storm water control ordinance, flood plain development ordinance, adult use ordinance, inoperable motor vehicle ordinance and the wind farm ordinance.”
Residential building permit fees for unincorporated land inside Mackinaw township
1 and 2 family dwelling permit, 1,001 to 2,000 sq ft: 450 USD
“700 to 1,000 square feet $400.00 • 1,001 to 2,000 square feet $450.00 • 2,001 to 3,000 square feet $500.00”
Residential building permit application in unincorporated land inside Mackinaw township
“the following information will be required at the time of submittal of a building permit application.”
We looked and could not find an official answer yet. Silence is not permission; ask Mackinaw Township or Tazewell 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 Mackinaw Township publishes no rule on the point, not that none exists. Tazewell County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Mackinaw Township means bringing your own water and power. The kit we’d start with:
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