Will County, Illinois
Village of Frankfort is a village in Will County, Illinois. Village of Frankfort adopts its own zoning, so inside its limits Village of Frankfort’s rules apply, not the county’s. Septic permits inside Village of Frankfort come from Will County (Will County Health Department — Private Sewage Program (Joliet Main Office) · 815-727-8490). 5 rules below are quoted from official sources and independently re-checked, most recently on November 2, 2026. Rules for unincorporated land are on the Will County page.
Land inside Frankfort village limits: the village administers its own zoning map and zoning code
“editor's note: this table lists changes to the zoning map and variances to the zoning code.”
Property inside Frankfort village served by a private sewage disposal system once a public sanitary sewer becomes available
time to connect building sewer after public sewer becomes available: <= 90 days
“when a public sewer becomes available, the building sewer shall be connected to said sewer within 90 days”
Village of Frankfort does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Private sewage disposal (septic) systems on land inside Frankfort village where no public sanitary sewer is available; the Will County Health Department, not the village, issues the permit. Applies inside Frankfort village per the village code.
“before commencement of construction of a private sewage disposal system the owner shall first obtain a written permit signed by the will county health department.”
New private sewage disposal (septic) system on a lot inside Frankfort village where a public sanitary sewer is not available
minimum lot area for subsurface soil absorption private sewage system permit: >= 150000 square feet (Lots smaller than this may not get a permit for a subsurface soil absorption system)
“no permit shall be issued for any private sewage disposal system employing subsurface soil absorption facilities where the area of the lot is less than 150,000 square feet.”
Private sewage disposal (septic) system built inside Frankfort village under a Will County Health Department permit
inspection notice time after receipt of written notice: <= 48 hours
“the applicant for the permit shall notify the will county health department when the work is ready for final inspection, and before any underground portions are covered.”
We looked and could not find an official answer yet. Silence is not permission; ask Village of Frankfort or Will 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 Village of Frankfort publishes no rule on the point, not that none exists. Will County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Village of Frankfort means bringing your own water and power. The kit we’d start with:
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