Radon Levels in New Mexico

33 counties — 7 high risk, 26 moderate, 0 low risk

7
26
Zone 1 High (21.2%) Zone 2 Moderate (78.8%) Zone 3 Low (0.0%)

New Mexico Radon Zone Map

Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.

Highest-Risk Counties

Bernalillo27.4% above action level
ColfaxZone 1 — High
MoraZone 1 — High
Rio ArribaZone 1 — High
San MiguelZone 1 — High
Santa Fe28.6% above action level
TaosZone 1 — High

Check Your New Mexico ZIP Code

All 33 Counties — By Radon Risk

CountyEPA ZoneTests% Above 4 pCi/L
Bernalillo High 106 27.4%
Colfax High 4 —
Mora High — —
Rio Arriba High 7 —
San Miguel High 4 —
Santa Fe High 28 28.6%
Taos High 7 —
Catron Moderate — —
Chaves Moderate 10 —
Cibola Moderate — —
Curry Moderate 6 —
De Baca Moderate — —
Doña Ana Moderate 25 36%
Eddy Moderate 9 44.4%
Grant Moderate 5 —
Guadalupe Moderate — —
Harding Moderate — —
Hidalgo Moderate — —
Lea Moderate 9 —
Lincoln Moderate 4 —
Los Alamos Moderate 4 —
Luna Moderate 4 —
McKinley Moderate 7 —
Otero Moderate 9 44.4%
Quay Moderate — —
Roosevelt Moderate — —
San Juan Moderate 13 46.2%
Sandoval Moderate 27 22.2%
Sierra Moderate — —
Socorro Moderate — —
Torrance Moderate 4 —
Union Moderate — —
Valencia Moderate 13 46.2%

Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network

Frequently Asked Questions

How many counties in New Mexico have high radon risk?

New Mexico has 7 counties classified as EPA Zone 1 (high radon risk), 26 as Zone 2 (moderate), and 0 as Zone 3 (low risk).

Is radon a problem in New Mexico?

New Mexico has 7 high-risk counties where elevated radon is likely. The EPA recommends all homes in New Mexico be tested for radon, regardless of which zone they're in.

How do I check radon levels for my New Mexico address?

Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.