Off-Grid Living in Riley County, Kansas

I've been digging into Riley County, Kansas for anyone eyeing off-grid life on the plains near Manhattan, and here's my honest read of what I found in the county's own documents.

Zoning is countywide here, run by the Riley County Planning & Development Department, and that's a step beyond the "no default" baseline you see in a lot of rural counties. Agriculture uses are exempt, but everything else has to fit its zoning district. If you want two acres or more, the SF-1 district lets you keep livestock; the smaller SF-2 and SF-3 lots don't. Anything not allowed outright needs a rezoning application, so I'd start any land search by calling Planning & Development to confirm what a specific parcel allows.

Dwellings, tiny homes, and RVs are a gray zone. The county's manufactured home rules require a permanent foundation and a building permit outside mobile home parks, and residential zones differ on whether mobile/modular homes are even allowed. I could not confirm anything specific about living full-time in an RV or a tiny house on wheels, so treat that as unresolved and ask Planning & Development directly before you buy a trailer to live in.

Building permits are required countywide before construction starts, mainly so the county can check zoning, setbacks, and Sanitary Code compliance, not because Riley County has adopted a building code of its own (it hasn't). Small structures under 49 square feet are exempt, as is anything on federal or Kansas State University/state land. The State Fire Marshal can still require compliance with the International Building Code in certain cases.

Septic is where Riley County gets serious. Its own Sanitary Code, enforced by the Environmental Health Division, requires a septic permit if you're running water into any structure, and any property without a lawful wastewater system is subject to the full weight of that code. Tanks need pumping and inspection by a licensed hauler on a set schedule, and alternative systems are allowed if standard septic or lagoon setups won't work, but they get annual inspection. Composting toilets specifically aren't addressed on the county's site, so that's not confirmed.

Greywater isn't broken out separately; it's presumably swept into the Sanitary Code's wastewater rules, but I couldn't find a dedicated ordinance, so ask Environmental Health how they'd treat a greywater system on your land.

Rainwater harvesting isn't addressed by the county at all as far as I can find, which means it likely falls back to Kansas's state-level domestic-use exemption under the Water Appropriation Act. Not confirmed at the county level, but nothing suggests it's restricted.

Wells need a permit approved by the county before you can use the water, under the Sanitary Code. Riley County doesn't do its own well water testing, oddly enough, and points residents to the neighboring Geary County Sanitarian for that.

Bottom line on utilities: nothing stops you from going off the electrical grid, but Riley County will not let a dwelling exist legally without an approved wastewater system and a permitted water source. Full self-sufficiency doesn't exempt you from the Sanitary Code.