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Radon in Pueblo County, Colorado

Pueblo County, Colorado, is in EPA radon Zone 1: predicted average indoor radon screening level greater than 4 pCi/L (highest potential). Radon laboratories reported 2,202 building tests here for 2008 to 2017: median 6.2 pCi/L, with 70.1% at or above EPA's 4 pCi/L action level (Colorado 46.6%, US 36.5%).

Zone 1
EPA radon zone (1993 county map)
6.2
median lab test, pCi/L (2008-2017)
70.1%
of lab tests at or above 4 pCi/L
2,202
buildings tested by labs, 2008-2017

Radon test results in Pueblo County

Radon test results on file for Pueblo County, CO, with state and national comparison
Test resultsPeriodTestsTypical result4 pCi/L or more
Radon testing laboratories2008-20172,202median 6.2 pCi/L70.1%
Colorado radon program2023200median 3.5 pCi/L44.4%
Colorado, all counties (labs)2008-201769,620n/a46.6%
United States (labs)2008-20171,408,802n/a36.5%

Test results describe buildings whose owners chose to test and whose results reached the lab or agency, not a random sample; small counts swing widely. State and US shares are computed from county counts and percents. The laboratory data comes from national radon testing laboratories and supplements EPA's zone map.

Radon in nearby counties

CountyEPA zoneLab tests4 pCi/L or more
Crowley County, COZone 12100%
Huerfano County, COZone 14753.7%
Otero County, COZone 13657.9%
El Paso County, COZone 16,65542.1%
Custer County, COZone 17754.8%
Fremont County, COZone 123158.1%

The six counties with the nearest centers.

What to do about radon in Pueblo County

Test the building. EPA recommends fixing a home at 4 pCi/L or more and considering a fix between 2 and 4 pCi/L, and says there is no known safe level of exposure. Colorado's state radon program can point you to testers and test kits.

Buying here? The Environmental Records Report lists this county's radon zone and test results with the flood zone, mapped faults, power lines and federal contamination records near the address.

Check one Pueblo County address

Environmental Records Report, $29. PDF and JSON, usually ready in about a minute.

Radon in Pueblo County: questions

What is the radon level in Pueblo County?

The median of the 2,202 laboratory tests reported for Pueblo County (2008 to 2017) was 6.2 pCi/L, and 70.1% of them were at or above 4 pCi/L. These are results of tested buildings; a single home can be far above or below them.

Is Pueblo County in radon Zone 1?

Yes. EPA's 1993 Map of Radon Zones puts Pueblo County in Zone 1, the counties with a predicted average indoor radon screening level above 4 pCi/L.

How does radon in Pueblo County compare with Colorado?

70.1% of laboratory tests in Pueblo County were at or above 4 pCi/L for 2008 to 2017, against 46.6% across Colorado (69,620 tests) and 36.5% nationally. 53 of Colorado's 64 counties are in Zone 1.

Should I test for radon in Pueblo County?

Yes. EPA recommends testing every home whatever its zone: "This map should not be used to determine if individual homes need to be tested." Fix the home at 4 pCi/L or more and consider a fix between 2 and 4 pCi/L; EPA says there is no known safe level of radon exposure.

More for Pueblo County

Other free hazard lookups

All of these, plus wetlands, FEMA hazard ratings and the federal contamination lists, are in the Environmental Records Report for any US address ($29).

Radon in every Colorado county · Radon map of every state

Data compiled 2026-10-20. County FIPS 08101. County-level screening information, not a radon measurement of any building.