Locations and reports
Radon in Colorado Springs, Colorado
EPA puts El Paso County, where Colorado Springs is, in Zone 1, its highest radon zone, and 34.4% of its 1,844 reported radon tests (2023) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
34.4%
4.5 pts below CO
- El Paso
- 34.4%
- Colorado
- 38.9%
El Paso, 31st of 38 in CO, 2023
Median result
2.5pCi/L
Below action level
- El Paso
- 2.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of El Paso's tests, 2023
Nearest county
56.8%
Teller, 22 miles
- Teller
- 56.8%
- El Paso
- 34.4%
162 tests, 2023
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
El Paso, where Colorado Springs is
Tests reported
1,844
In El Paso
- El Paso
- 1,844
- Teller
- 162
Reported to CDC before any fix, 2023
Read a result for Colorado Springs
Starts at El Paso County's median, 2.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.5 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. El Paso County's median reported result, 2023.
The data
Colorado Springs, What is published
What is published for Colorado Springs
Every figure for Colorado Springs is a county's
Radon data is published by county, not by city, so for Colorado Springs it is El Paso County's: its EPA zone (Zone 1) and the 1,844 tests reported to CDC for 2023. Only a test tells you about one home.
Colorado Springs covers 195 square miles of land, all of it in El Paso County. About 494,743 people live there, 2,532 to the square mile.
Colorado Springs, Counties
The county Colorado Springs lies in
MeasuredEl Paso County's EPA zone and the figures CDC publishes for it, 2023.
El Paso CountyZone 1Highest predicted potential
- 34.4%
- Reported tests at or above 4 pCi/L
- 2.5 pCi/L
- Median reported result
- 1,844 tests
- Tests reported to CDC
- 10
- Annual years on file
El Paso County ranks 31st of 38 Colorado counties with 30 or more tests for that period, 4.5 points below the 38.9% pooled across Colorado's counties, 1.0 points above the national pool of 33.4%.
The counties nearest Colorado Springs with a CDC figure for 2023, measured from the middle of the city: Teller County (22 miles, 56.8% of 162 tests), Douglas County (33 miles, 35.8% of 1,635 tests) and Elbert County (44 miles, 45.8% of 120 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 35.8% to 57.5%; the farthest of them, Arapahoe County, is 59 miles away at 37.9%.
No business in the directory gives Colorado Springs as its address; the Colorado list covers it. Colorado's other cities with a page of their own: Fort Collins, Grand Junction, Aurora and Longmont.
The counties around Colorado Springs
By distance from the middle of Colorado Springs; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.
Colorado Springs, Geology
The ground under Colorado Springs
PredictedUSGS's geologic map puts all of Colorado Springs' mapped land in one class: high radon potential. The map puts 78.4% of Colorado Springs in the area it calls High Plains and 18.7% in Dawson Arkose, with one smaller area beside them. USGS gives the first a radon index of 12 and the second 14, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| High Plains | Quaternary deposits and Cretaceous marine shales that locally have a high radiometric signature. | High | 12 | 78.4% |
| Dawson Arkose | Consolidated alluvial fan and river deposits sourced in the granite mountains to the west. | High | 14 | 18.7% |
| Rocky Mountains | Precambrian granites, gneiss, amphibolite, variable uranium content, abundant shear zones.Sedimentary rocks shed from the granitic highlands. | High | 15 | 2.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Colorado Springs beside its county and Colorado
All of Colorado Springs, like all of El Paso County, is rated high. Colorado Springs has more high-potential ground than Colorado as a whole: 100% of its land against 74.8%.
The map rates the ground, not the air in any home.
Colorado Springs, Homes
Homes in Colorado Springs
Of Colorado Springs' 207,078 homes, 61% are detached houses, against 67% across El Paso County; 23% are in buildings of five or more homes. Half of its homes were built before 1986, close to El Paso County's 1988: 14% date from before 1960 and 28% from 2000 or later. 61% of occupied homes are lived in by their owner (El Paso County: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Colorado Springs | El Paso County | Colorado |
|---|---|---|---|
| Housing units | 207,078 | 296,753 | 2,545,124 |
| Detached houses | 61% | 67% | 62% |
| In buildings of 5 or more | 23% | 17% | 22% |
| Mobile homes | 2% | 3% | 4% |
| Built before 1960 | 14% | 12% | 16% |
| Built since 2000 | 28% | 33% | 31% |
| Middle year built | 1986 | 1988 | 1987 |
| Owner-occupied | 61% | 66% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Colorado Springs, Local resources
Local resources for Colorado Springs
Who to ask in Colorado: its radon program, test kits and professionals.
- Colorado's radon programColorado Department of Public Health and Environment.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Order a discounted radon test kit
- Compare kits
- Professionals in ColoradoRadon testers and mitigators in Colorado, each with how its listing was checked.
The program's own words on licensing and disclosure are on the Colorado page.
What it means
Colorado Springs, Questions
Questions about radon in Colorado Springs
What radon zone is Colorado Springs in?
EPA's map puts El Paso County, and with it Colorado Springs, in Zone 1, the map's highest class: a predicted county average above 4 pCi/L.
What are radon levels in Colorado Springs?
A high result is no surprise around Colorado Springs: 34.4% of 1,844 tests reported from El Paso County for 2023 reached 4 pCi/L or more. The median reported result was 2.5 pCi/L.
Should I test my home in Colorado Springs?
Yes. About 634 of the 1,844 tests reported from El Paso County were at or above 4 pCi/L. That is below Colorado's pooled 38.9%, and still not a reason to skip it, and ranks El Paso County 31st of the 38 Colorado counties with 30 or more tests. No map says which homes those are. How to test a home.
What ground is Colorado Springs built on, as far as radon goes?
78.4% of Colorado Springs sits on what USGS's map calls "High Plains", rated high for radon potential, radon index 12; another 18.7% is "Dawson Arkose", in the same class. One smaller area makes up the rest.
Is radon higher in the counties around Colorado Springs?
Yes, in every direction measured. Each of the 8 nearest counties with a figure reports a larger share of high tests than El Paso County's 34.4%; the highest is Park County (57.5%, 54 miles off).
The answers use the published figures of El Paso County, the county Colorado Springs lies in.
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