Skip to content
RADON411

Locations and reports

Radon in Loveland, Colorado

EPA puts Larimer County, where Loveland is, in Zone 1, its highest radon zone, and high results are common there: 49.4% of the 1,902 radon tests reported to CDC (2023) came back 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    49.4%

    10.5 pts above CO

    Larimer
    49.4%
    Colorado
    38.9%

    Larimer, 9th of 38 in CO, 2023

  • Median result

    3.8pCi/L

    Below action level

    Larimer
    3.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of Larimer's tests, 2023

  • Nearest county

    34.2%

    Boulder, 27 miles

    Boulder
    34.2%
    Larimer
    49.4%

    1,963 tests, 2023

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    Larimer, where Loveland is

  • Tests reported

    1,902

    In Larimer

    Larimer
    1,902
    Boulder
    1,963

    Reported to CDC before any fix, 2023

Read a result for Loveland

Starts at Larimer County's median, 3.8 pCi/L

3.8pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 3.8 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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. Larimer County's median reported result, 2023.

Interpret this readingWhat a fix costs

The data

Loveland, What is published

What is published for Loveland

Information:

Every figure for Loveland is a county's

Radon data is published by county, not by city, so for Loveland it is Larimer County's: its EPA zone (Zone 1) and the 1,902 tests reported to CDC for 2023. Only a test tells you about one home.

Loveland covers 34.4 square miles of land, all of it in Larimer County. About 81,387 people live there, 2,365 to the square mile.

Loveland, Counties

The county Loveland lies in

Measured

Larimer County's EPA zone and the figures CDC publishes for it, 2023.

Larimer CountyZone 1Highest predicted potential

49.4%
Reported tests at or above 4 pCi/L
3.8 pCi/L
Median reported result
1,902 tests
Tests reported to CDC
10
Annual years on file

Larimer County ranks 9th of 38 Colorado counties with 30 or more tests for that period, 10.5 points above the 38.9% pooled across Colorado's counties, 16.0 points above the national pool of 33.4%.

The counties nearest Loveland with a CDC figure for 2023, measured from the middle of the city: Boulder County (27 miles, 34.2% of 1,963 tests), Broomfield County (32 miles, 36.9% of 758 tests) and Weld County (37 miles, 46.0% of 663 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 26.4% to 46.0%; the farthest of them, Clear Creek County, is 59 miles away at 41.2%.

No business in the directory gives Loveland as its address; the Colorado list covers it. Colorado's other cities with a page of their own: Colorado Springs, Fort Collins, Grand Junction and Aurora.

The counties around Loveland

By distance from the middle of Loveland; counties with 30 or more tests.

Nearest counties to Loveland with 30 or more tests
CountyDistanceTestsAt or above 4 pCi/LMedian
Boulder County27 mi1,96334.2%2.5 pCi/L
Broomfield County32 mi75836.9%2.3 pCi/L
Weld County37 mi66346.0%3.5 pCi/L
Gilpin County46 mi12926.4%1.1 pCi/L
Denver County46 mi2,27735.4%2.8 pCi/L
Adams County54 mi1,19136.6%2.3 pCi/L
Jefferson County58 mi3,06841.8%3.2 pCi/L
Clear Creek County59 mi5141.2%3.0 pCi/L

Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.

Loveland, Geology

The ground under Loveland

Predicted

USGS's geologic map puts all of Loveland's mapped land in one class: high radon potential. The map puts 50.0% of Loveland in the area it calls High Plains and 50.0% in Rocky Mountains. USGS gives the first a radon index of 12 and the second 15, both in the high band (12 to 17).

USGS's geologic areas under Loveland
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
High PlainsQuaternary deposits and Cretaceous marine shales that locally have a high radiometric signature.High1250.0%
Rocky MountainsPrecambrian granites, gneiss, amphibolite, variable uranium content, abundant shear zones.Sedimentary rocks shed from the granitic highlands.High1550.0%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Loveland beside its county and Colorado

The ground under Loveland is close to Larimer County's as a whole: 100% rated high against 98.4%. Loveland has more high-potential ground than Colorado as a whole: 100% of its land against 74.8%.

Share of land by USGS radon potential: Loveland, the county it lies in and Colorado
AreaEPA zoneLow potentialModerate potentialHigh potential
LovelandBy countyNoneNone100%
Larimer CountyZone 1None1.6%98.4%
Colorado64 counties, pooled by land areaVariesNone25.2%74.8%

The map rates the ground, not the air in any home.

Loveland, Homes

Homes in Loveland

Of Loveland's 35,330 homes, 63% are detached houses, against 65% across Larimer County; 19% are in buildings of five or more homes. Half of its homes were built before 1993, close to Larimer County's 1993: 11% date from before 1960 and 37% from 2000 or later. 62% of occupied homes are lived in by their owner (Larimer County: 64%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Loveland, Larimer County, Colorado, 2019 to 2023
HomesLovelandLarimer CountyColorado
Housing units35,330161,8822,545,124
Detached houses63%65%62%
In buildings of 5 or more19%18%22%
Mobile homes2%3%4%
Built before 196011%10%16%
Built since 200037%37%31%
Middle year built199319931987
Owner-occupied62%64%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

Loveland, Local resources

Local resources for Loveland

Who to ask in Colorado: its radon program, test kits and professionals.

The program's own words on licensing and disclosure are on the Colorado page.

What it means

Loveland, Questions

Questions about radon in Loveland

What radon zone is Loveland in?

Loveland has no zone of its own: it shares Larimer County's, Zone 1, the map's highest class: a predicted county average above 4 pCi/L.

What are radon levels in Loveland?

49.4% of the 1,902 tests reported from Larimer County for 2023 were at or above 4 pCi/L, the level at which EPA says to fix a home: high results are ordinary around Loveland. The median reported result was 3.8 pCi/L.

Should I test my home in Loveland?

Yes. About 940 of the 1,902 tests reported from Larimer County were at or above 4 pCi/L. That is above Colorado's pooled 38.9%, and ranks Larimer County 9th 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 Loveland built on, as far as radon goes?

50.0% of Loveland sits on what USGS's map calls "High Plains", rated high for radon potential, radon index 12; another 50.0% is "Rocky Mountains", in the same class.

Is radon higher in the counties around Loveland?

No. Larimer County's 49.4% is above every one of the 8 nearest counties with a figure: the closest share to it is Weld County (46.0%, 37 miles off), the lowest Gilpin County (26.4%, 46 miles off).

The answers use the published figures of Larimer County, the county Loveland lies in.

Explore