Off-Grid Living in Edmunds County, South Dakota

If you're eyeing raw land in Edmunds County, South Dakota for an off-grid setup, here's what I found digging through the county's official documents and state resources.

Zoning comes from the county, not the state. Unlike a lot of rural South Dakota counties that skip zoning entirely, Edmunds County adopted a countywide zoning ordinance (Ordinance #2022-7-1, adopted July 2022) under the authority granted by state law SDCL 11-2. The county is split into eight districts, and what you can do with your land, plus setbacks and structure types, depends on which district you're in. I'd call this the single most important thing to check before you buy: the Edmunds County Planning & Zoning Office can tell you which district a parcel falls in.

Tiny homes and RVs as full-time dwellings are a gray area. The ordinance defines "structure" and "temporary structure" broadly, but I couldn't find a specific clause addressing tiny houses or RVs used as permanent residences. That doesn't mean it's banned, it means it's not spelled out, so this is a "call the Zoning Officer before you commit" situation.

Building permits go through the county Planning & Zoning office, which also handles 911 addressing, plats, conditional use permits, and variances. Whether the county has formally adopted a specific building code like the IRC beyond just requiring a permit isn't confirmed in what I reviewed, so ask directly.

Septic systems are a two-layer deal. South Dakota requires certified installers statewide (state DANR oversees this), but Edmunds County adds its own layer: the Planning Commission can require inspection of owner-installed systems and wants a plot plan submitted for approval before you install anything. Violations get reported up to the state DANR's Environmental Protection division. Composting toilets aren't addressed anywhere I could find, county or state, so that's genuinely unresolved.

Greywater and rainwater harvesting have no specific county rules that I could locate. My assumption is these fall back to general state baseline treatment (rainwater for domestic use is generally exempt from state water-rights permitting), but there's no Edmunds County ordinance dealing with either topic directly. Worth a direct question to the Zoning Officer since silence in the ordinance isn't the same as a green light.

Private wells are a state matter. South Dakota's well-construction program governs drilling and permitting; the county doesn't run its own well ordinance, though its zoning rules do reference wellhead protection zones in the context of livestock feeding operations.

Going off-grid on utilities: I didn't find any county language requiring you to hook up to water, sewer, or power. You'll still need to meet whatever setback and permit requirements apply in your district, but a straight-up mandate to connect to utilities isn't in the documents I reviewed.

Bottom line: Edmunds County actually zones, which is unusual for the area and means more oversight than you might expect from rural South Dakota. Confirm district-specific rules and any gray areas (tiny homes, greywater, composting toilets) directly with the Planning & Zoning Office before you buy or build.