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Radon in Baker County, Oregon

Baker County, Oregon, is in EPA radon Zone 2: predicted average indoor radon screening level from 2 to 4 pCi/L (moderate potential). Radon laboratories reported 28 building tests here for 2008 to 2017: median 2.4 pCi/L, with 37.5% at or above EPA's 4 pCi/L action level (Oregon 25.2%, US 36.5%).

Zone 2
EPA radon zone (1993 county map)
2.4
median lab test, pCi/L (2008-2017)
37.5%
of lab tests at or above 4 pCi/L
28
buildings tested by labs, 2008-2017

Radon test results in Baker County

Radon test results on file for Baker County, OR, with state and national comparison
Test resultsPeriodTestsTypical result4 pCi/L or more
Radon testing laboratories2008-201728median 2.4 pCi/L37.5%
Oregon radon program20237median 1.9 pCi/L9.1%
Oregon, all counties (labs)2008-201717,034n/a25.2%
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
Union County, ORZone 28142%
Washington County, IDZone 35620.9%
Adams County, IDZone 31851.6%
Wallowa County, ORZone 3826.7%
Grant County, ORZone 230%
Payette County, IDZone 2554.9%

The six counties with the nearest centers.

What to do about radon in Baker 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. Oregon'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 Baker County address

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

Radon in Baker County: questions

What is the radon level in Baker County?

The median of the 28 laboratory tests reported for Baker County (2008 to 2017) was 2.4 pCi/L, and 37.5% 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 Baker County in radon Zone 1?

No. EPA's 1993 map puts Baker County in Zone 2 (predicted average indoor radon screening level from 2 to 4 pCi/L (moderate potential)). EPA says homes in every zone can have high radon and should be tested.

How does radon in Baker County compare with Oregon?

37.5% of laboratory tests in Baker County were at or above 4 pCi/L for 2008 to 2017, against 25.2% across Oregon (17,034 tests) and 36.5% nationally. 0 of Oregon's 36 counties are in Zone 1.

Should I test for radon in Baker 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 Baker 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 Oregon county · Radon map of every state

Data compiled 2026-10-20. County FIPS 41001. County-level screening information, not a radon measurement of any building.