Rimkus
Houston, TX
Listed for: Testing
Verified:Illinois state license
Call Rimkus at (800) 580-3228No website listed
Locations and reports
Radon in Houston, Texas
Houston lies in 4 counties, in EPA Zone 3. Homes with elevated levels occur in all three zones, so the only way to know your home's level is to test it.
Data checked By Radon411Methodology
Share at 4+ pCi/L
2.9%
7.3 pts below TX
- Fort Bend
- 2.9%
- Texas
- 10.2%
Fort Bend, 16th of 22 in TX, 2008 to 2017
Median result
0.2pCi/L
Below action level
- Fort Bend
- 0.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Fort Bend's tests, 2008 to 2017
Highest county
3.2%
Montgomery
- Montgomery
- 3.2%
- Harris
- 2.9%
4 counties, 3 with 30+ tests, 2008 to 2017
EPA radon zone
Zone 3
Low potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
Fort Bend; Harris Zone 3, Montgomery Zone 3, Waller Zone 3
Tests reported
105
In Fort Bend
- Fort Bend
- 105
- Harris
- 733
Reported to CDC before any fix, 2008 to 2017
Read a result for Houston
Starts at Fort Bend County's median, 0.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.2 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Fort Bend County's median reported result, 2008 to 2017.
The data
Houston, What is published
What is published for Houston
Information:
Every figure for Houston is a county's
Radon data is published by county, not by city, and Houston reaches into 4 counties: Fort Bend County, Harris County, Montgomery County and Waller County. Each has its own EPA zone and its own CDC test figures, set side by side below and each labelled with its county. Only a test tells you about one home.
About 2,397,315 people live in Houston.
Houston, Counties
Houston's counties, side by side
MeasuredEach county's own EPA zone and its own published CDC figures for 2008 to 2017, laboratory, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.
- Fort Bend County
- EPA zone
- Zone 3: Lower predicted potential
- At or above 4 pCi/L
- 2.9%
- Median result
- 0.2 pCi/L
- Tests reported
- 105 tests
- Annual years on file
- None
- Harris County
- EPA zone
- Zone 3: Lower predicted potential
- At or above 4 pCi/L
- 2.9%
- Median result
- 0.4 pCi/L
- Tests reported
- 733 tests
- Annual years on file
- None
- Montgomery County
- EPA zone
- Zone 3: Lower predicted potential
- At or above 4 pCi/L
- 3.2%
- Median result
- 0.8 pCi/L
- Tests reported
- 188 tests
- Annual years on file
- None
- Waller County
- EPA zone
- Zone 3: Lower predicted potential
- At or above 4 pCi/L
- 0.0%
- Median result
- 0.1 pCi/L
- Tests reported
- 7 tests
- Annual years on file
- None
| County | EPA zone | Reported tests at or above 4 pCi/L | Median reported result | Tests reported | Annual years on file |
|---|---|---|---|---|---|
| Fort Bend County | Zone 3: Lower predicted potential | 2.9% | 0.2 pCi/L | 105 tests | None |
| Harris County | Zone 3: Lower predicted potential | 2.9% | 0.4 pCi/L | 733 tests | None |
| Montgomery County | Zone 3: Lower predicted potential | 3.2% | 0.8 pCi/L | 188 tests | None |
| Waller County | Zone 3: Lower predicted potential | 0.0% | 0.1 pCi/L | 7 tests | None |
Houston spans 4 counties, each with its own EPA zone and its own CDC figure: Fort Bend County (Zone 3, 2.9% of 105 tests), Harris County (Zone 3, 2.9% of 733 tests), Montgomery County (Zone 3, 3.2% of 188 tests) and Waller County (Zone 3, 0.0% of 7 tests).
Fort Bend County ranks 16th of 22 Texas counties with 30 or more tests for that period, 7.3 points below the 10.2% pooled across Texas's counties, 32.8 points below the national pool of 35.7%. Of the city's other counties, Harris County reported 2.9%, Montgomery County reported 3.2% and Waller County reported 0.0%.
Around Fort Bend County, one of the counties Houston lies in, the nearest counties with a CDC figure for 2008 to 2017, laboratory are Brazoria County (30 miles, 6.3% of 32 tests), Galveston County (50 miles, 0.0% of 73 tests) and Brazos County (84 miles, 0.0% of 47 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 0.0% to 23.3%; the farthest of them, Bexar County, is 166 miles away at 6.5%.
The directory lists 1 business with an address in Houston, 1 for testing. Texas's other cities with a page of their own: Austin and San Antonio.
Against Texas and its other counties
Shares of tests people chose to run and report, by county (2008 to 2017, laboratory); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.
The counties around Houston
By distance from Fort Bend County; counties with 30 or more tests.
The median reported pre-mitigation result for 2008 to 2017, laboratory was 0.2 pCi/L in Fort Bend County, 0.4 pCi/L in Harris County, 0.8 pCi/L in Montgomery County and 0.1 pCi/L in Waller County.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2008 to 2017, laboratory.
Houston, Homes
Homes in Houston
Houston has 1,023,112 homes, and many share a building: 44% are in buildings of five or more, 43% are detached houses, against 84% across Fort Bend County. The homes are older than Fort Bend County's as a whole: half were built before 1981 (2004 for Fort Bend County), and 17% date from before 1960. Most occupied homes here are rented: owners live in 42% (Fort Bend County: 77%). A tenant can run a test; a fix is the landlord's to make.
| Homes | Houston | Fort Bend County | Texas |
|---|---|---|---|
| Housing units | 1,023,112 | 293,694 | 11,890,808 |
| Detached houses | 43% | 84% | 65% |
| In buildings of 5 or more | 44% | 10% | 21% |
| Mobile homes | 1% | 3% | 7% |
| Built before 1960 | 17% | 2% | 13% |
| Built since 2000 | 28% | 59% | 37% |
| Middle year built | 1981 | 2004 | 1990 |
| Owner-occupied | 42% | 77% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Houston, Professionals
Radon professionals listed in Houston
Businesses whose listed city is Houston, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Houston: 1 of 1
1 listing with Houston as the city. See radon testing in Houston, or all radon professionals in Texas.
Houston, Local resources
Local resources for Houston
Who to ask in Texas: its radon program, test kits and professionals.
What it means
Houston, Questions
Questions about radon in Houston
What radon zone is Houston in?
All 4 counties Houston reaches into (Fort Bend County, Harris County, Montgomery County and Waller County) are in Zone 3, the map's lowest class: a predicted county average under 2 pCi/L. EPA zones counties, not cities, so that is the zone for every part of Houston.
What are radon levels in Houston?
Reported levels around Houston run low: 2.9% of 105 tests from Fort Bend County for 2008 to 2017 (laboratory totals) reached 4 pCi/L. The median reported result was 0.2 pCi/L. Low is not none. Harris County reported 2.9% of 733 tests, Montgomery County reported 3.2% of 188 tests and Waller County reported 0.0% of 7 tests; the counties are kept apart.
Should I test my home in Houston?
Yes, even here. Fort Bend County reported 3 of 105 tests at or above 4 pCi/L. That is below Texas' pooled 10.2%, and still not a reason to skip it, and ranks Fort Bend County 16th of the 22 Texas counties with 30 or more tests. Testing found those homes; the county's low share did not. How to test a home.
Is radon higher in the counties around Houston?
It depends which way you go. 5 of the 8 nearest counties with a figure report a larger share than Fort Bend County's 2.9% and 3 a smaller one: from Galveston County (0.0%, 50 miles off) to McLennan County (23.3%, 164 miles off).
Who tests for or fixes radon in Houston?
Houston is the address of one business in Radon411's directory, listed for testing, none for mitigation. Each entry names the public list it came from. Radon professionals in Houston.
The answers use the published figures of Fort Bend County, Harris County, Montgomery County and Waller County, the counties Houston lies in.
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