Wells and Water Rights in Santa Fe County, New Mexico

Layer one: the state permit, through OSE District VI

Every well in Santa Fe County starts with the state layer. The Office of the State Engineer declared the Rio Grande corridor -- which includes the Santa Fe area -- a groundwater basin back in 1956, and any new well here has required a state permit ever since. That permit is administered through OSE's Water Rights Division District VI office, located at 407 Galisteo Street, Room 102, in Santa Fe (mailing address: P.O. Box 25102, Santa Fe, NM 87504), phone (505) 827-6120. If the source of groundwater at a specific depth is uncertain, OSE can first issue an exploratory permit before converting it to a permit to use the water once the well proves out.

A statutory domestic well permit outside the Aamodt basin (discussed below) generally allows up to 3 acre-feet (roughly 977,000 gallons) per year for household use under older rules, but a 2006 statewide OSE policy change cut the standard domestic-well allowance to 1 acre-foot (about 326,000 gallons) per year outside legitimate agricultural use for most new permits. Don't assume the older, larger allowance applies to a well you'd be drilling new today -- confirm the current allocation OSE would actually grant for the specific parcel and depth.

Layer two: Santa Fe County's own domestic well permit inside the utility service area

This is the part that catches buyers off guard: Santa Fe County layers its own permit requirement directly on top of the state one. Under the county's water code (codified in the Sustainable Land Development Code, SLDC Section 7.13, and enforced through the Domestic Well Use Metering Program originally established by Ordinance No. 2002-013), no one may drill a new statutory domestic well within the service area of the Santa Fe County water utility except in accordance with a County domestic well permit issued by the County's own Administrator -- a state OSE permit alone does not authorize drilling inside that service area. The county can also decline to issue its own well permit if the parcel is instead required to connect to the county water utility directly, meaning the well option may not even be available on some in-service-area parcels.

The threshold question, then, is simple to state but not always simple to answer from a listing: does the parcel fall inside the Santa Fe County water utility's service area? The county's water and wastewater systems maps (available from the Public Works Utilities Division) show the mapped service boundary, but boundaries have been updated over time and a specific address is the only reliable way to confirm status -- ask the Utilities Division directly rather than eyeballing a general area map. If a well is being drilled to supplement, replace, or deepen an existing well, or to create an alternative point of diversion for an already-existing water right, a new county permit is generally not required for that narrower situation -- but a brand-new well on previously unused land inside the service area is.

Practically, that means a buyer planning to drill should budget for two separate applications and two separate reviewing agencies rather than one: the OSE permit application (Form WR-01, or an exploratory-permit variant if the aquifer at that location is unproven) through District VI, and -- if the parcel is inside the utility service area -- a County domestic well permit application through the Utilities Division, along with the county's own metering and reporting obligations once the well is in.

Domestic well metering: a real, ongoing county obligation once a well is drilled

Santa Fe County's Domestic Well Use Metering Program isn't a one-time permitting step -- it's an ongoing requirement. Recorded plats, subdivision covenants, individual permit conditions, and the SLDC itself can all establish metering and reporting obligations for a given property's well, and the county's own inspectors check well meters as part of its inspection process (alongside cisterns and any required offsite improvements). If you're buying a property with an existing well rather than drilling a new one, ask whether the well is already enrolled in the metering program, whether meter readings have been submitted on schedule, and whether any recorded covenant on the property creates a metering or reporting obligation you'd be inheriting.

The Aamodt Basin: four well categories, a closed basin, and an optional regional system now under construction

If you're evaluating land in the Pojoaque, Nambé, Tesuque, or San Ildefonso river basin area in the county's north (roughly northwest of the city of Santa Fe), the water picture gets more specific still. This area sits inside the Aamodt case -- filed in 1966, at one point the oldest active federal court case in the country, reaching a multi-party settlement agreement in 2006, codified by Congress as the Aamodt Litigation Settlement Act of 2010, and finalized with a court decree in 2017 establishing the priority and scope of water rights among the four Pueblos, the State, the City of Santa Fe, Santa Fe County, and individual non-Pueblo water users in the basin.

One direct practical consequence: the settlement closed the Pojoaque Basin to new water right development following court approval. Existing non-Pueblo domestic wells in the basin fall into one of four documented categories, each with a different allowed annual use: Pre-basin wells (drilled before November 29, 1956); "72-12-1" wells (permitted before the state's January 13, 1983 moratorium on new domestic wells in the basin); Post-Moratorium wells that are party to the Post-1982 Well Agreement approved October 4, 1999; and Post-Moratorium wells that are not party to that agreement. Allowed use across these categories has ranged from about half an acre-foot up to 3 acre-feet per year, with several hundred post-1983 wells specifically limited to indoor use and capped at less than one acre-foot. Which category an existing well falls into is not always obvious from a property listing -- it has to be traced through the well's permit history, and it materially affects how much water the property is actually entitled to use.

Because the basin is now closed to new development, a buyer looking at raw, never-permitted land in this specific area should not assume a straightforward new domestic well permit is available the way it would be almost anywhere else in the county -- confirm directly with OSE's Aamodt Legal Department and District VI office whether any well right currently exists on the parcel and what category and allocation would attach to it, rather than assuming a new permit is a formality.

Separately, the Pojoaque Basin Regional Water System (PBRWS) -- the signature infrastructure piece of the Aamodt settlement, a joint project of Santa Fe County, the State, the U.S. Department of the Interior, and the four Pueblos -- is now in active construction, with service-connection work beginning in 2026 and a projected Phase 2 completion around 2029; it's designed to deliver up to 2,500 acre-feet of treated drinking water annually to the four Pueblos and Santa Fe County. As of early 2026, roughly 375 non-Pueblo households in the basin had filed acceptance forms or well elections to receive PBRWS water once service becomes available, and Santa Fe County has committed to pay up to $10,000 per household toward the connection cost through a dedicated connection fund (aided by $4 million in state settlement funding). Connecting to PBRWS is optional, not mandatory, for an eligible household -- but if you're buying land in this basin, ask directly whether the specific parcel has an existing well election or acceptance form on file, since that affects both its current water source and its eventual access to the regional system.

What to actually check, in order

1. Confirm whether the parcel falls inside the Santa Fe County water utility's service area (Utilities Division) -- this determines whether a County domestic well permit, on top of the state OSE permit, would be required for a new well, or whether the county could instead require connection to its own system.
2. Confirm the parcel's existing water right and well status directly with OSE District VI, including any recorded permit number, priority date, and annual allocation -- do not assume a "well on the property" automatically carries an unrestricted right to use it at full capacity.
3. If the parcel is in the Pojoaque, Nambé, Tesuque, or San Ildefonso basin area, determine which of the four Aamodt well categories (if any) applies, whether the basin's general closure to new development affects the parcel, and whether a PBRWS well election or acceptance form already exists for the property.
4. Ask whether an existing well is enrolled in the county's Domestic Well Use Metering Program and whether metering/reporting obligations are current -- an unmet obligation here transfers to a new owner along with the property.
5. For a shared or community well, obtain the well-sharing agreement, recent assessment notices, and any bylaws governing maintenance cost allocation and usage limits among the parties.