Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Lake County, Oregon
EPA puts Lake County in Zone 2, its middle radon zone, and only 3 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
6.7%
Deschutes County
- Deschutes
- 6.7%
1 of 5 neighbours have 30+ tests, 2016
Nearest county
6.7%
Deschutes County, 88 miles
- Deschutes
- 6.7%
- Oregon
- 21.5%
Share at 4+ pCi/L, 45 tests, 2016
Ground above low
85.8%
23.5 pts above Oregon
- Lake
- 85.8%
- Oregon
- 62.3%
Share of land USGS rates moderate or high potential
Tests reported
6
Too few for a share
- Lake
- 6
- Needed
- 30
2007 to 2016, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Lake County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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.
The data
Lake County, At a glance
Lake County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Lake County is a
USGS geologic potential: Moderate across 86% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Lake County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2015 | 0.0% |
| 2016 | 0.0% |
| 2017 | 0.0% |
| 2018 | 0.0% |
| 2021 | 25.0% |
| 2022 | 0.0% |
2022: 0.0%. Across these years the share ran from 0.0% to 25.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 3 tests were reported to CDC for Lake County over 2022, 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: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).
Lake County, Compared
Lake County radon figures, compared
Calculated by Radon411CDC's largest figure for Lake County rests on 6 tests over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 1.0 pCi/L, with a middle value of 0.2 pCi/L.
Deschutes County, the one bordering county with a figure in 2016, reported 6.7% of its tests at or above 4 pCi/L. Farther out, Lane County (147 miles away) at 7.5%, Linn County (159 miles away) at 9.4% and Wasco County (168 miles away) at 10.0% have figures too. Pooled across 35 Oregon counties, 21.5% of reported tests reached that level; across every county in the country with a figure, 31.2%.
Statewide for the same period, Union County reported the highest share (39.1%) and Deschutes County the lowest (6.7%). EPA's 1993 map puts Lake County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 86% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Lake County, Geology
The ground under Lake County
PredictedMost of the ground under Lake County is one class on USGS's geologic map: 85.8% of its land is moderate radon potential, with 14.2% low. The map puts 85.7% of Lake County in the area it calls Northern Basin and Range and 13.9% in High Lava Plains. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Basin and Range | Basalt, andesite, rhyolite, tuffaceous sedimentary rocks. Low soil uranium content in the western part, uranium-bearing volcanic rocks and uranium deposits in the eastern part of the province. | Moderate | 9 | 85.7% |
| High Lava Plains | Tertiary and Quaternary basalt flows and Tertiary silicic ash-flow tuff. | Low | 7 | 13.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lake County beside the ground around it
Lake County has more moderate-potential ground than Oregon as a whole: 85.8% of its land against 62.3%. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Klamath County comes nearest at 71.6%.
The map rates the ground, not the air in any home.
Local help
Lake County, Local resources
Radon testing and mitigation in Lake County
- Oregon Radon Awareness ProgramOregon Radon Awareness Program, run by Oregon Health Authority, offers free or discounted test kits, and answers questions about testing and mitigation in Oregon.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Oregon Radon Awareness Program provides a FREE short-term radon test kit to those living in areas of Oregon where little radon testing has been done.
- Compare kits
- Professionals in Oregon38 professionals are listed in Oregon.
What Oregon's program says
- Radon.program@dhsoha.state.or.us
What it means
Lake County, Questions
Questions about radon in Lake County
Are radon levels high in Lake County?
In 2022, 0.0% of the radon tests reported to CDC for Lake County, Oregon were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.3 pCi/L. Deschutes County, the one bordering county with a figure in 2016, reported 6.7% of its tests at or above 4 pCi/L.
Which counties border Lake County?
Lake County borders 5 counties: Klamath County, OR, Harney County, OR, Modoc County, CA, Deschutes County, OR and Washoe County, NV.
Products
Lake County, Products
Testing a home in Lake County
No CDC figure names Lake County; the nearest county with one, Deschutes County (88 miles away), reported 6.7% of its tests at or above 4 pCi/L in 2016, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Lake County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
RadonEye RD200 plug-in continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Lake County, Bordering counties
Counties bordering Lake County
Calculated by Radon411- Radon levels in Klamath County, OREPA zone 2
42.9%at or above 4 pCi/L
Median 1.6 pCi/L · 7 tests
- Radon levels in Deschutes County, OREPA zone 3
6.7%at or above 4 pCi/L
Median 0.8 pCi/L · 45 tests
- Radon levels in Harney County, OREPA zone 2
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 4 tests
- Radon levels in Modoc County, CAEPA zone 3
No CDC figure for 2016; its page reads it against its own neighbours.
- Radon levels in Washoe County, NVEPA zone 2
No CDC figure for 2016; its page reads it against its own neighbours.
Lake County, Cities and towns
Cities and towns in Lake County
Lake County's population has barely moved since 2020: 8,187 residents on July 1, 2025 against 8,170 then, by the Census Bureau's estimates. Spread over its land, that is 1.0 people to the square mile. Its largest town, Lakeview, has 2,419 residents, 29.5% of the total. Together its 2 incorporated places hold 32.6% of those residents; the other 67.4% live outside any of them. Reported testing is thin here: 6 tests over 2007 to 2016, or 0.7 for every 1,000 residents (2025 estimate), where Oregon as a whole comes to 5.2.
From Lakeview to Paisley, CDC publishes no figure by town: each reads Lake County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Lakeview | 2,419 | −0.4% | 29.5% |
| Paisley | 248 | +0.8% | 3.0% |
2 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).
Lake County, Homes
Homes in Lake County
Lake County is a place of houses on their own lots: 75% of its 4,223 homes are detached single-family houses, against 63% across Oregon. The homes are older than Oregon's as a whole: half were built before 1972 (1980 for Oregon), and 35% date from before 1960. 62% of occupied homes are lived in by their owner (Oregon: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Lake County | Oregon |
|---|---|---|
| Housing units | 4,223 | 1,838,631 |
| Detached houses | 75% | 63% |
| In buildings of 5 or more | 3% | 17% |
| Mobile homes | 19% | 8% |
| Built before 1960 | 35% | 23% |
| Built since 2000 | 12% | 24% |
| Middle year built | 1972 | 1980 |
| Owner-occupied | 62% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.