New Mexico · off-grid water rights
Whether a new off-grid home can legally get its own water in New Mexico: the state well and water-rights rules, then the 32 counties where a specific groundwater basin adds a catch — each cited to the state water agency.
New Mexico water rules
Nearly all developed New Mexico lies inside an OSE 'declared' underground water basin, but a household 72-12-1.1 domestic well is a by-right permit the State Engineer issues even in closed/over-appropriated basins (metering can be required). The by-right amount is cut to 0.25 acre-ft/yr in a declared Domestic Well Management Area, and a few basin-specific orders cap it further (Gallup Order 197, Zuni Order 199) or stop issuing new domestic permits entirely (Hot Springs Order 198).
Limit: 1 acre-ft/yr by right (NMSA 72-12-1.1); 0.25 acre-ft/yr in a declared Domestic Well Management Area
NM OSE domestic well rules, 19.27.5 NMAC ↗No permit for systems <=250 gpd (NMAC 20.7.3.810); subsurface, used within 24 hrs.
Greywater Action / EPA REUSExplorer ↗All water appropriated by priority; small domestic wells allowed by permit.
National Agricultural Law Center ↗32 constrained counties in New Mexico
See the full New Mexico county ranking, compare states on the water-rights hub, or read how we score water access. We dim physical water — never erased — where a county sits in one of these basins, household-first.
General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
