Radon by ZIP

Radon zones in New Mexico

Last updated

EPA’s Map of Radon Zones places 33 New Mexico counties in its three radon potential zones: 7 in Zone 1 (highest), 26 in Zone 2 (moderate), and 0 in Zone 3 (low).

7Zone 1 · Highest potential
26Zone 2 · Moderate potential
0Zone 3 · Low potential

What this means for New Mexico homes

Most New Mexico counties fall in Zone 2. EPA predicts moderate average indoor levels (2 to 4 pCi/L) across much of New Mexico. Many homes will be below the action level, but many will not, and only a test can tell which.

EPA’s guidance is the same everywhere: test your home, fix it if the level is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L. The zone map is from 1993 and should not be used to decide whether a single home needs testing.

New Mexico radon program

EPA lists the following state contact for New Mexico: the state radon program, phone 505-476-8608. Website: www.env.nm.gov/rcb/indoor-radon-outreach-program. State programs can tell you about local testing data, free or discounted test kits, disclosure rules for home sales, and credentialed radon professionals.

New Mexico counties and their EPA radon zones

CountyEPA radon zone
Bernalillo CountyZone 1
Catron CountyZone 2
Chaves CountyZone 2
Cibola CountyZone 2
Colfax CountyZone 1
Curry CountyZone 2
De Baca CountyZone 2
Doña Ana County (zone of Dona Ana County)Zone 2
Eddy CountyZone 2
Grant CountyZone 2
Guadalupe CountyZone 2
Harding CountyZone 2
Hidalgo CountyZone 2
Lea CountyZone 2
Lincoln CountyZone 2
Los Alamos CountyZone 2
Luna CountyZone 2
McKinley CountyZone 2
Mora CountyZone 1
Otero CountyZone 2
Quay CountyZone 2
Rio Arriba CountyZone 1
Roosevelt CountyZone 2
San Juan CountyZone 2
San Miguel CountyZone 1
Sandoval CountyZone 2
Santa Fe CountyZone 1
Sierra CountyZone 2
Socorro CountyZone 2
Taos CountyZone 1
Torrance CountyZone 2
Union CountyZone 2
Valencia CountyZone 2

County names follow the 2020 Census. Zones from the EPA Map of Radon Zones (text version). Rows marked “zone of” use the zone EPA gave the predecessor or surrounding county.

Next steps: read how to test your home, check a result with the level calculator, or look up a single address by ZIP code.

Sources

  1. U.S. EPA, EPA Map of Radon Zones (text version)
  2. U.S. EPA, EPA Map of Radon Zones and Supplemental Information (state radon contacts)
  3. U.S. EPA, EPA Maps of Radon Zones and Supporting Documents by State