Rock Island County, Illinois
Village of Hillsdale is a village in Rock Island County, Illinois. Septic permits inside Village of Hillsdale come from Rock Island County (Rock Island County Health Department · (309) 793-1955). 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 Rock Island County page.
Village of Hillsdale 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 inside Hillsdale village, handled by the Rock Island County health authority under the county sewage code; county-level rule that reaches the village because it applies 'in the county'. The village has not been shown to run its own septic program.
“health authority. the administrator of the county department of public health, or his or her duly authorized representative(s).”
Installing, constructing, extending or repairing a private sewage disposal system inside Hillsdale village (county code applies county-wide; village not shown to have its own rule)
“and it shall be unlawful to proceed with such work unless a permit therefor shall have first been obtained from the health authority.”
New home inside Hillsdale village on a private septic system: the county will not permit a private system where a public sewer is reasonably available. Whether the village requires connection to its own water or sewer system was not found.
reasonable distance to public sewer for single-family residential property: 200 feet (1,000 feet for a commercial property discharging 1,500 or more gallons of domestic sewage per day or a multi-family dwelling)
“a reasonable distance shall be considered 200 feet from a single-family residential property or a commercial property discharging less than 1,500 gallons of domestic sewage per day, and 1,000 feet from a commercial property discharging 1,500 or more gallons of domestic sewage per day or a multi-family dwelling.”
Subdivision or replat of land inside Hillsdale village that will use private septic systems: county health authority reviews plats for septic suitability only. Village subdivision ordinance not located.
“no preliminary plat or subdivision shall be approved unless every proposed lot is considered suitable for an approved private sewage disposal system.”
Private sewage (septic) permit fees for work inside Hillsdale village under the county code. Building permit fees for the village are not covered.
septic permit fee, renovation on developed property: 125 USD ($65 for septic tank repair, baffle replacement, building sewer repair, distribution box replacement, or repair of 10 linear feet or less of seepage field) · septic permit fee, new building: 150 USD
“for construction of a new building, a fee of $150 shall accompany each application.”
We looked and could not find an official answer yet. Silence is not permission; ask Village of Hillsdale or Rock Island 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 Hillsdale publishes no rule on the point, not that none exists. Rock Island County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Village of Hillsdale means bringing your own water and power. The kit we’d start with:
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