Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Wise County, Texas
EPA puts Wise County in Zone 3, its lowest radon zone, and only 4 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
10.6%
Tarrant County
- Tarrant
- 10.6%
- Denton
- 7.2%
2 of 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
7.2%
Denton County, 31 miles
- Denton
- 7.2%
- Texas
- 10.4%
Share at 4+ pCi/L, 181 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Wise
- 0.0%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
4
Too few for a share
- Wise
- 4
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Wise 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
Wise County, At a glance
Wise County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Wise County, 2008 to 2017, laboratory
CDC holds 4 reported tests for Wise County over the 2008 to 2017 laboratory totals, with a median of 0.9 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Wise County beside the counties around it is how this page reads it.
What these figures count
Only 4 tests were reported to CDC for Wise County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Wise County, Compared
Wise County radon figures, compared
Calculated by Radon411CDC's largest figure for Wise County rests on 4 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 25.0 points and no rank or comparison is drawn from it. Results reached as high as 1.2 pCi/L, with a middle value of 0.9 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Tarrant County reported the largest share at or above 4 pCi/L, 10.6%, and Denton County the smallest, 7.2%. Farther out, Dallas County (60 miles away) at 8.7%, Collin County (63 miles away) at 7.7% and McLennan County (118 miles away) at 17.1% have figures too. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Randall County reported the highest share (71.4%) and Nueces County the lowest (0.0%). EPA's 1993 map puts Wise County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Wise County, Geology
The ground under Wise County
PredictedUSGS's geologic map puts all of Wise County's mapped land in one class: low radon potential. The map puts 91.3% of Wise County in the area it calls Central Texas/Gulf Coast Plain and 8.7% in Central Texas. USGS gives both a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Texas/Gulf Coast Plain | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 91.3% |
| Central Texas | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 8.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Wise County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Wise County's is. Of the 6 counties that border it, 3 have more moderate-potential ground, Denton County the most at 51.0%.
The map rates the ground, not the air in any home.
Local help
Wise County, Local resources
Radon testing and mitigation in Wise County
- Texas Radon GroupTexas Radon Group, run by Texas Tech University, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Texas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
- Compare kits
- Professionals in Texas7 professionals are listed in Texas.
What Texas's program says
- Licensing of radon professionals
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.
What it means
Wise County, Questions
Questions about radon in Wise County
Are radon levels high in Wise County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Wise County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.9 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Tarrant County reported the largest share at or above 4 pCi/L, 10.6%, and Denton County the smallest, 7.2%.
Which counties border Wise County?
Wise County borders 6 counties: Montague County, Jack County, Denton County, Cooke County, Parker County and Tarrant County.
Products
Wise County, Products
Testing a home in Wise County
No CDC figure names Wise County; the nearest county with one, Denton County (31 miles away), reported 7.2% of its tests at or above 4 pCi/L over the 2007 to 2016 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Wise County.
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
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Wise County, Bordering counties
Counties bordering Wise County
Calculated by Radon411- Radon levels in Montague CountyEPA zone 3
12.5%at or above 4 pCi/L
Median 0.1 pCi/L · 16 tests
- Radon levels in Tarrant CountyEPA zone 3
10.6%at or above 4 pCi/L
Median 0.9 pCi/L · 312 tests
- Radon levels in Parker CountyEPA zone 3
10.0%at or above 4 pCi/L
Median 1.0 pCi/L · 20 tests
- Radon levels in Denton CountyEPA zone 3
7.2%at or above 4 pCi/L
Median 0.9 pCi/L · 181 tests
- Radon levels in Jack CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Cooke CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Wise County, Cities and towns
Cities and towns in Wise County
Wise County is growing: the Census Bureau puts it at 83,778 residents on July 1, 2025, up 21.5% from 68,931 in 2020. That works out to 93 people per square mile of land. Fort Worth, the largest place on its list (1,028,117 residents in all), extends beyond Wise County, so no share of the total is worked out for it. Reported testing is thin here: 4 tests over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.
From Fort Worth to Lake Bridgeport, CDC publishes no figure by town: each reads Wise County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Fort Worthextends beyond Wise County | 1,028,117 | +11.3% | Counted whole |
| Decatur | 9,029 | +35.5% | 10.8% |
| Bridgeport | 6,915 | +16.4% | 8.3% |
| Springtownextends beyond Wise County | 5,204 | +68.4% | Counted whole |
| Boyd | 2,546 | +78.7% | 3.0% |
| Runaway Bay | 2,212 | +42.2% | 2.6% |
| Rhome | 1,961 | +19.5% | 2.3% |
| Alvord | 1,675 | +23.4% | 2.0% |
| New Fairviewextends beyond Wise County | 1,666 | +22.6% | Counted whole |
| Aurora | 1,643 | +17.9% | 2.0% |
| Newarkextends beyond Wise County | 1,307 | +19.4% | Counted whole |
| Chico | 1,116 | +17.4% | 1.3% |
- Paradise
- Lake Bridgeport
14 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Wise County is counted whole, so it has no share.
Wise County, Homes
Homes in Wise County
Of Wise County's 27,196 homes, 71% are detached houses, against 65% across Texas; 23% are mobile homes. Half of its homes were built before 1994, close to Texas' 1990: 12% date from before 1960 and 39% from 2000 or later. Owners live in 83% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Wise County | Texas |
|---|---|---|
| Housing units | 27,196 | 11,890,808 |
| Detached houses | 71% | 65% |
| In buildings of 5 or more | 2% | 21% |
| Mobile homes | 23% | 7% |
| Built before 1960 | 12% | 13% |
| Built since 2000 | 39% | 37% |
| Middle year built | 1994 | 1990 |
| Owner-occupied | 83% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.