Off-Grid Living in Johnson County, Nebraska

Johnson County, Nebraska is rural, farm-heavy country around Tecumseh, and it does have countywide zoning that reaches into the unincorporated areas. That's the good news if you're hoping for clear rules. The less good news is that beyond zoning, I couldn't find a dedicated county environmental health or building-code page, so a lot of what governs off-grid life here (septic, greywater, rainwater) falls back to Nebraska's statewide rules rather than anything Johnson County has written specifically.

Zoning is real here. The county has a Zoning Administrator, a Planning Commission, and a zoning manual (adopted under state authority that lets counties create planning commissions and zoning resolutions with the force of law). Whether raw land can be occupied, camped on, or built on depends on your parcel's specific district, so you'd want to pull the zoning manual or call the Zoning Administrator before assuming anything.

Dwellings, tiny homes, and RVs: I found the Zoning Administrator can issue building and zoning permits, including for nonconforming lots, but no county-specific rule on tiny homes or RVs as permanent residences. Nebraska state law does say a county can't ban residential use of land just because a structure is regulated under the state's Uniform Standards for Modular Housing Units Act, which offers some protection for manufactured/modular housing, but you should confirm your particular structure type with the county directly.

Building permits: the Zoning Administrator issues permits at the county level, but I couldn't confirm which building code edition or what triggers a permit requirement. That's a phone call, not a guess.

Septic and greywater: no Johnson County health department or environmental office turned up in my research, so these default to the Nebraska Department of Environment and Energy's statewide onsite wastewater rules (NDEE Title 124), which govern septic design and generally prohibit discharging untreated greywater. Ask the Zoning Administrator who actually issues septic permits locally, since counties often handle this even without a standalone webpage.

Rainwater harvesting: no county rule found, and no clear statewide ban either. This one is genuinely unclear, worth a direct call.

Wells: this is one area with real teeth. Johnson County sits in the Nemaha Natural Resources District, which requires all wells drilled since 1993 to be registered, domestic wells included. High-capacity wells (over 50 gallons per minute) need a District permit. An unregistered well is treated as illegal.

Utilities: I found no county mandate forcing a grid or sewer hookup, but going off-grid doesn't mean going unregulated. Your well still needs registering with the NRD and your wastewater still needs to meet state standards.

Bottom line: Johnson County has more zoning infrastructure than many rural Nebraska counties, but the specifics you'll need for septic, tiny homes, and building codes aren't published online in a way I could verify. This is a county where a phone call to the Zoning Administrator will save you real guesswork.