Off-Grid Living in Scott County, Illinois

Scott County is one of the smallest, most rural counties in Illinois, and that shows up clearly in the public record. When I went looking for a countywide zoning ordinance, a county building code, or a county building department, I couldn't find any of them published on the county's official site (scottcoil.gov) or on the usual code-hosting services. That's not unusual for a county this size in Illinois; the state's Zoning Enabling Act lets counties adopt their own zoning, but plenty of small counties never do, or don't post it online. So a lot of what I'd normally tell you with confidence, I have to flag as "not confirmed" here.

Here's what that means practically. If Scott County truly has no countywide zoning ordinance, unincorporated land (outside Winchester, Bluffs, Alsey, Exeter, Glasgow, and Manchester) may be lightly regulated for occupancy, dwelling type, tiny homes, and RV living, but I can't confirm that as official policy. It could just mean the rule isn't published where I could find it. If your parcel sits inside one of the incorporated towns, that town's own rules control, not the county's, and I'd call city hall directly.

Building permits follow the same pattern: no county building department turns up, and Illinois' new statewide building code (administered by the Capital Development Board, effective January 2025) would be the default baseline anywhere without a local code, but I found nothing confirming how or whether Scott County applies it.

Septic and wells are different, because those are set at the state level regardless. Illinois' Private Sewage Disposal Code (title 77 of the Illinois Administrative Code, Part 905) governs septic systems statewide, and the Water Well Construction Code governs wells, both administered by the Illinois Department of Public Health. Locally, that authority is delegated to the Scott County Health Department, which is the office that would issue septic and well permits here. I didn't find anything suggesting Scott County has added stricter local rules on top of the state code.

Greywater reuse and rainwater harvesting are both unclear. No state or county rule addressing either showed up in my research, which likely means these fall into a gray zone handled case-by-case, if at all, by the health department. Same with full off-grid utility disconnection: no ordinance requiring hookup to grid power or municipal water/sewer, but also nothing explicitly permitting it either.

My honest bottom line: Scott County looks like a place where paperwork and enforcement infrastructure just may not be built out for a lot of off-grid questions, but "no confirmed rule" is not the same as "no rule." Call the Scott County Health Department for septic, well, and greywater questions, and call the County Clerk's office to ask directly whether any zoning or building code applies to unincorporated land before you commit to a property.