Skip to content
RADON411

Locations and reports

New Mexico Radon Map and Levels by County

New Mexico's counties span EPA Zones 1 and 2. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    29.7%

    6.2 pts below U.S.

    New Mexico
    29.7%
    U.S.
    36.0%

    4,643 tests across 30 counties, 2005 to 2014

  • Rank among states

    23 of 47

    Middle of the states

    New Mexico
    29.7%
    Nebraska
    60.4%

    By share, every state pooled the same way, 2005 to 2014

  • Counties in EPA Zone 1

    7 of 33

    Some at highest potential

    Zone 1
    7
    Zone 2
    26

    Most counties sit in Zone 2; Zone 1 is the highest potential

  • Highest county

    69.2%

    Taos County

    Taos
    69.2%
    Otero
    11.3%

    Counties with 30+ tests, 2005 to 2014

Read a result for New Mexico

Starts at EPA's action level

4.0pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 4.0 pCi/L

At or above 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. 29.7% of New Mexico's reported tests reached 4 pCi/L, 2005 to 2014.

Interpret this readingWhat a fix costs

The data

New Mexico, At a glance

New Mexico at a glance

Predicted: EPA radon zone

33 of 33 counties classified

EPA classifies counties, not states. Of the 33 counties in New Mexico with a zone, 7 are in Zone 1 and 26 in Zone 2.

  • Zone 1: Highest predicted potentialgreater than 4 pCi/L7 of 33 counties · 21.2%
  • Zone 2: Moderate predicted potential2 to 4 pCi/L26 of 33 counties · 78.8%

An EPA radon zone predicts a whole county. It is not intended to determine whether any individual home should be tested: homes with elevated levels occur in all three zones, and EPA recommends testing every home regardless of zone.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, county by county

CDC publishes New Mexico's radon test figures by county: 30 of its 33 counties have one. Each one's share is in the county list.

How to read these figures

New Mexico, Compared

New Mexico radon figures, compared

Calculated by Radon411
New Mexico, 2005 to 2014, laboratory
29.7%
of 4,643 tests at or above 4 pCi/L, pooled
Against the U.S.
−6.2points
36.0% pooled
Rank among the states
23 of 47
1 is the highest share
Counties with 30 or more tests
13
Highest
69.2%
Taos County
Lowest
11.3%
Otero County

About 3 in 10 of the 4,643 tests reported for New Mexico over the 2005 to 2014 laboratory totals came back at or above 4 pCi/L (29.7%, 30 counties pooled). That is 23rd of 47 states with county figures for the period; Virginia (30.3%) above it and Washington (27.2%) below.

By band, 1 county at 50% or more, 4 counties at 30% to 50%, 4 counties at 15% to 30%, 4 counties at 5% to 15%. Its 13 counties with 30 or more tests run from 11.3% in Otero County to 69.2% in Taos County; in 1 of them half or more of the reported tests reached 4 pCi/L.

EPA's 1993 map puts 7 of its 33 classified counties in Zone 1; against that, 29.7% of the tests reported since reached 4 pCi/L. The national pool for the same period is 36.0%, so New Mexico runs 6.2 points below the country.

Across its 4 overlapping ten-year totals, the share went from 29.7% (2005 to 2014) to 28.5% (2008 to 2017), within 2 points, with 2006 to 2015 the highest at 30.3%.

New Mexico ranked among 47 states by pooled share of tests at or above 4 pCi/L, 2005 to 2014, laboratory
StateRankCountiesTestsAt or above 4 pCi/L
Maine18 of 47168,95136.6%
Tennessee19 of 479523,04133.2%
Missouri20 of 4711542,53032.4%
New Hampshire21 of 471019,18131.8%
Virginia22 of 4713239,39130.3%
New Mexico23 of 47304,64329.7%
Washington24 of 47386,61727.2%
Oregon25 of 473417,18327.2%
Connecticut26 of 47823,28026.5%
Michigan27 of 4783105,40326.2%
New York28 of 476276,23125.2%
New Mexico's highest counties with 30 or more tests, by share at or above 4 pCi/L, 2005 to 2014, laboratory
CountyRankTestsAt or above 4 pCi/L
Taos County1 of 139169.2%
McKinley County2 of 134546.7%
San Miguel County3 of 133740.5%
San Juan County4 of 135933.9%
Santa Fe County5 of 132,31431.9%
Bernalillo County6 of 131,35825.7%
Los Alamos County7 of 139225.0%
Sandoval County8 of 1316823.2%
Lincoln County9 of 133619.4%
Doña Ana County10 of 1311614.7%
New Mexico's counties with 30 or more tests, by their own share at or above 4 pCi/L, 2005 to 2014, laboratory
ShareCountiesTheir testsFor example
50% or more191Taos County
30% to 50%42,455McKinley County, San Miguel County, San Juan County
15% to 30%41,654Bernalillo County, Los Alamos County, Sandoval County
5% to 15%4235Doña Ana County, Valencia County, Lea County
Under 5%00None
New Mexico ten-year laboratory totals, pooled, against the United States
PeriodCountiesTestsAt or above 4 pCi/LUnited StatesChange from the row before
2008 to 2017293,72128.5%35.7%−1.6 points
2007 to 2016293,91530.0%35.8%−0.2 points
2006 to 2015304,25130.3%36.3%+0.5 points
2005 to 2014304,64329.7%36.0%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period. CDC publishes no state or national figure.

New Mexico, Counties

New Mexico counties by EPA zone

Predicted

All 33 counties, grouped by the zone EPA predicts and ordered by their reported share at or above 4 pCi/L, under New Mexico's map. Each county has a page of its own.

New Mexico radon map by county: EPA radon zones. Map of New Mexico's 33 counties shaded by EPA radon zone: Zone 1 in red-orange, Zone 2 in amber. 7 in Zone 1, 26 in Zone 2, 0 in Zone 3.
New Mexico radon map by countyEPA radon zones for New Mexico's counties: 7 counties in Zone 1, 26 counties in Zone 2, 0 counties in Zone 3.A prediction for each county, not a reading of any home; elevated homes occur in all three zones.

The 12 highest in New Mexico, 2005 to 2014

Zone 1: highest predicted potential7

Local help

New Mexico, Local resources

Local resources in New Mexico

Who to ask in New Mexico: its radon program, test kits and professionals.

What New Mexico's program says
Phone
(505) 476-8600
Email
radon.questions@env.nm.gov
Licensing of radon professionals
There is not currently a certification program within the state.

What it means

New Mexico, Questions

Questions about radon in New Mexico

Is radon a problem in New Mexico?

Of the 33 counties in New Mexico that EPA's Map of Radon Zones classifies, 7 carry Zone 1 (the highest predicted potential), 26 Zone 2 and 0 Zone 3. Pooled from 30 counties, 29.7% of the 4,643 radon tests reported to CDC over the 2005 to 2014 laboratory totals were at or above 4 pCi/L, 23rd of 47 states.

Which New Mexico counties are in EPA radon Zone 1?

7 counties are in Zone 1: Bernalillo County, Colfax County, Mora County, Rio Arriba County, San Miguel County, Santa Fe County, Taos County.

Which New Mexico counties have the highest radon?

By the share of reported tests at or above 4 pCi/L, 2005 to 2014, laboratory: Taos County 69.2% (91 tests), McKinley County 46.7% (45 tests), San Miguel County 40.5% (37 tests), San Juan County 33.9% (59 tests), Santa Fe County 31.9% (2,314 tests).

Which EPA region is New Mexico in?

New Mexico is in EPA Region 6: South Central.

Products

New Mexico, Products

Testing a home in New Mexico

29.7% of the 4,643 tests reported to CDC for New Mexico over the 2005 to 2014 laboratory totals reached 4 pCi/L: a short-term kit (2 to 90 days) gives a first answer in days, a long-term test the year-round average. A short-term kit (2 to 90 days) is the quick first check for a home in New Mexico; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for New Mexico homes, compared

Explore

Cities in New Mexico with their own page

Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.