Off-Grid Living in Walthall County, Mississippi

I'll be upfront: Walthall County, Mississippi doesn't have much of a public paper trail when it comes to zoning, building codes, or off-grid living rules. There's no independent county planning or building department website I could find, and no Municode or eCode360 listing for either Walthall County or the Town of Tylertown. The county's official web presence is shared with Tylertown at co.walthall.ms.us, and most of what I could confirm comes from state-level agencies rather than county ordinances.

Zoning and raw land. Mississippi doesn't require counties to adopt zoning, and I couldn't confirm whether Walthall County has a countywide zoning ordinance at all. Tylertown, as an incorporated town, likely has its own land-use rules for anyone inside town limits, but I didn't find those published online either. If you're buying land here, your first call should be the Walthall County Board of Supervisors, and if the parcel is near or in Tylertown, the town office too.

Dwellings, tiny homes, RVs. No ordinance addressing minimum home size, tiny homes, or full-time RV living turned up for the county or town. This likely defaults to whatever discretion Mississippi counties generally exercise, which tends to be cautious about permanent RV occupancy, but I can't confirm specifics for Walthall.

Building permits. Same story, no adopted residential code found, no building department page. Mississippi doesn't mandate that counties adopt a building code, so it's genuinely possible Walthall hasn't, but that's a guess, not a confirmed fact.

Septic systems. This one I can speak to more confidently. The Mississippi State Department of Health (MSDH) Division of On-Site Wastewater regulates individual on-site wastewater disposal systems statewide under Title 41, Chapter 67 of the Mississippi Code. Walthall County falls under this state framework rather than any separate county health ordinance, so septic and composting toilet approval runs through MSDH's site evaluation process.

Greywater. No county-specific rule exists that I found, so the state's onsite wastewater framework applies by default, and it doesn't carve out a separate greywater exemption, meaning greywater disposal is treated more restrictively than in states with dedicated greywater codes.

Rainwater harvesting. No ordinance restricting it at the county or town level, so the general state baseline of "permitted" stands.

Private wells. MSDH also oversees well-related permitting tied to its site evaluation and water sampling process. No separate county well ordinance was found, so this again runs through the state.

Utility disconnection. Nothing county-specific found. Full off-grid disconnection tends to be a gray area in most Mississippi counties without zoning, but I can't confirm Walthall's posture either way.

Bottom line: this is a county where state rules fill in most of the gaps, and a phone call to local offices will tell you more than anything published online.