Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Valencia County, New Mexico
EPA puts Valencia County in Zone 2, its middle radon zone, and only 20 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
12.9%
16.8 pts below NM
- Valencia
- 12.9%
- New Mexico
- 29.7%
31 tests, 2005 to 2014
Median result
1.7pCi/L
Below action level
- Valencia
- 1.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2005 to 2014
Tests reported
31
13th of 13 by tests
- Valencia
- 31
- Santa Fe
- 2,314
Reported to CDC before any fix, 2005 to 2014
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in New Mexico
11 of 13
Lowest quarter
- Valencia
- 12.9%
- Taos
- 69.2%
By share, of 13 with 30+ tests
Read a result for Valencia County
Starts at Valencia County's median, 1.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.7 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Valencia County's median reported result, 2005 to 2014.
The data
Valencia County, At a glance
Valencia County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Valencia County is a
USGS geologic potential: Moderate across 91% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Valencia County, 2008 to 2017, laboratory
CDC holds 20 reported tests for Valencia County over the 2008 to 2017 laboratory totals, with a median of 2.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Valencia County beside the counties around it is how this page reads it.
What these figures count
Only 20 tests were reported to CDC for Valencia County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Valencia County, Compared
Valencia County radon figures, compared
Calculated by Radon411Valencia County reports fewer high tests than New Mexico overall. 12.9% of its 31 tests over the 2005 to 2014 laboratory totals were at or above 4 pCi/L. That is 16.8 points below the 29.7% pooled from 30 New Mexico counties.
The newest figure, over the 2008 to 2017 laboratory totals, counts only 20 tests (20.0% at or above 4 pCi/L), too few to compare, so this reading uses the 31-test figure.
Ordered from highest share down, it comes 11th of 13 New Mexico counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 36.0%; Valencia County sits 23.1 points below it.
Bernalillo County, the one bordering county with a figure for the same period, reported 25.7%. Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 12.9% share point the same way here.
Half the tests came in under 1.7 pCi/L and half over it; the single highest reached 6.3 pCi/L. The rest split 54.8% under 2 pCi/L and 32.3% from 2 to 4 (New Mexico: 38.8% and 31.4%).
CDC's ten-year totals for Valencia County went from 31 tests (2005 to 2014) to 20 (2008 to 2017), the share going from 12.9% to 20.0%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Valencia County, Geology
The ground under Valencia County
PredictedMost of the ground under Valencia County is one class on USGS's geologic map: 90.9% of its land is moderate radon potential, with 9.1% high. The map puts 90.9% of Valencia County in the area it calls Southern Colorado Plateau and 9.1% in Rocky Mountains (southern extension). USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Southern Colorado Plateau | Cretaceous marine sandstone, shale. | Moderate | 10 | 90.9% |
| Rocky Mountains (southern extension) | Sandstone, siltstone, shale, volcanic sediments, and valley-fill alluvium. | High | 12 | 9.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Valencia County beside the ground around it
New Mexico as a whole has more high-potential ground than Valencia County: 19.2% of its land, against 9.1% here. Every one of the 4 counties that border it has more high-potential ground, Bernalillo County the most at 32.3%.
The map rates the ground, not the air in any home.
Local help
Valencia County, Local resources
Radon testing and mitigation in Valencia County
- New Mexico Indoor Radon Outreach ProgramNew Mexico Indoor Radon Outreach Program, run by New Mexico Environment Department, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in New Mexico.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The New Mexico Environment Department seasonally distributes free radon testing kits to the public on a first-come, first-served basis.
- Compare kits
- See the New Mexico directoryNo professionals are listed in New Mexico yet. The state program can point you to registered testers and mitigators.
What New Mexico's program says
- Phone
- (505) 476-8600
- radon.questions@env.nm.gov
- Licensing of radon professionals
There is not currently a certification program within the state.
What it means
Valencia County, Questions
Questions about radon in Valencia County
Are radon levels high in Valencia County?
Over the 2008 to 2017 laboratory totals, 20.0% of the radon tests reported to CDC for Valencia County, New Mexico were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of 13 New Mexico counties with 30 or more tests for the same period, 10 reported a higher share; pooled, the state comes to 29.7%.
Which counties border Valencia County?
Valencia County borders 4 counties: Bernalillo County, Socorro County, Torrance County and Cibola County.
Products
Valencia County, Products
Testing a home in Valencia County
In Valencia County, 12.9% of 31 tests reported to CDC over the 2005 to 2014 laboratory totals reached 4 pCi/L, against 29.7% pooled across New Mexico. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Valencia County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorAEGTEST
HOUND-3699 radon monitor with a 2.1-inch touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
First reading: Within 1 hour
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Valencia County, Bordering counties
Counties bordering Valencia County
Calculated by Radon411- Radon levels in Cibola CountyEPA zone 2
40.0%at or above 4 pCi/L
Median 3.5 pCi/L · 20 tests · 27.1 points above Valencia County
- Radon levels in Bernalillo CountyEPA zone 1
25.7%at or above 4 pCi/L
Median 2.2 pCi/L · 1,358 tests · 12.8 points above Valencia County
- Radon levels in Torrance CountyEPA zone 2
7.7%at or above 4 pCi/L
Median 0.8 pCi/L · 13 tests · 5.2 points below Valencia County
- Radon levels in Socorro CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 8 tests · 12.9 points below Valencia County
Valencia County, Cities and towns
Cities and towns in Valencia County
Valencia County is growing: the Census Bureau puts it at 82,013 residents on July 1, 2025, up 7.2% from 76,495 in 2020. That works out to 77 people per square mile of land. Its largest town, Los Lunas, has 20,572 residents, 25.1% of the total. Together its 5 incorporated places hold 49.7% of those residents; the other 50.3% live outside any of them. Reported testing is thin here: 31 tests over 2005 to 2014, or 0.4 for every 1,000 residents (2025 estimate), where New Mexico as a whole comes to 2.2.
From Los Lunas to Peralta, CDC publishes no figure by town: each reads Valencia County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Los Lunas | 20,572 | +17.9% | 25.1% |
| Belen | 7,589 | +3.3% | 9.3% |
| Rio Communities | 4,953 | +0.4% | 6.0% |
| Bosque Farms | 4,174 | +3.7% | 5.1% |
| Peralta | 3,499 | +4.2% | 4.3% |
5 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Valencia County, Homes
Homes in Valencia County
Of Valencia County's 30,396 homes, 62% are detached houses, against 65% across New Mexico; 31% are mobile homes. Half of its homes were built before 1989, close to New Mexico's 1984: 8% date from before 1960 and 24% from 2000 or later. Owners live in 82% of the occupied homes (New Mexico: 69%), so for most households a test and a fix are their own to order.
| Homes | Valencia County | New Mexico |
|---|---|---|
| Housing units | 30,396 | 949,524 |
| Detached houses | 62% | 65% |
| In buildings of 5 or more | 3% | 10% |
| Mobile homes | 31% | 16% |
| Built before 1960 | 8% | 17% |
| Built since 2000 | 24% | 24% |
| Middle year built | 1989 | 1984 |
| Owner-occupied | 82% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.