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Radon Levels in Washington County, Texas

EPA puts Washington County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
Zone 3Lower predicted potential
Measured
1building tested and reported to CDC (2008 to 2017), with no share or median published
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

Washington County, At a glance

Washington County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

This is a county-level geologic prediction. It is not a measurement of any address, and houses with elevated radon are found in all three zones.

What EPA predicts hereScreening level, geology

EPA predicts an average indoor of less than 2 pCi/L (less than 75 Bq/m³) across the county as a whole.

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 Washington County, 2008 to 2017, laboratory

Buildings tested
1
At or above 4 pCi/L
Not available
Median result
Not available

No CDC share or median is on file for Washington County, Texas, its state or the country, so there is nothing to compare yet.

What these figures count

Distribution of radon tests reported to CDC, not this house. People testing before a sale, or because they suspect a problem, are over-represented in any reported testing data.

The figure at the top is a count for 2008 to 2017 (laboratory totals): 1 building tested and reported to CDC. CDC published no share of tests by result band and no median for Washington County for that period, so none is shown here.

It is not a count of homes in Washington County, and it is not a random sample: it counts only the buildings people chose to test and that were reported.

Washington County's own published CDC figures beside those of the counties that border it, for the same period.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

Radon Action Brief

National Radon Action MonthPre-sale

Washington County's radon brief, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get the Washington County BriefSee a free sample

Area data, not a test of the building.

Local help

Washington County, Local resources

Radon testing and mitigation in Washington County

Who tests and fixes radon in Washington County: listed businesses, Texas's radon program and test kits.

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

Washington County, Questions

Questions about radon in Washington County

Common questions

8 questions, answered from the figures above

Are radon levels high in Washington County?

Over the 2008 to 2017 laboratory totals, CDC published only a count for Washington County, Texas, with no share of tests at or above 4 pCi/L and no median. EPA places Washington County in Zone 3, lower predicted potential, a predicted average indoor screening level less than 2 pCi/L. Homes with elevated levels occur in all three zones, so the figures describe the area, not your house. Testing is the only way to know the radon level in a specific building.

Radon levels: what a result meansWhat is radon?Radon levels in Texas

How do I get a radon test in Washington County?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. No radon testing business listed on Radon411 has an address in Washington County or names it as a service area yet. The Texas radon program is the place to ask about certified testers and any test kit offer it runs.

Radon testing: how to test a homeRadon test kits comparedFree and low-cost kits by stateRadon Action Month checklistTexas radon program

Who does radon mitigation in Washington County?

No listed mitigator names Washington County as a service area yet; the Texas directory lists 7 companies. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional. Your state radon program is the place to check whether Texas requires one.

Radon mitigation: how it worksRadon mitigation costRadon mitigation systemsMitigators in Texas

What EPA radon zone is Washington County in?

EPA places Washington County, Texas in Zone 3, which EPA describes as lower predicted potential for the area. A zone is a prediction for the whole county and never determines whether a particular home should be tested. EPA recommends testing every home regardless of zone.

Should I test my home in Washington County?

Yes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. How to test a home.

When is the best time of year to test?

EPA says short-term tests stay in the home from 2 to 90 days and that all radon tests should run a minimum of 48 hours; long-term tests stay more than 90 days. EPA's guides do not name a best season: they say radon levels tend to vary from day to day and season to season, so a long-term test is more likely than a short-term test to tell you the year-round average.

What does it cost to test?

EPA's Citizen's Guide calls testing easy and inexpensive, and EPA's Home Buyer's and Seller's Guide says passive short-term and long-term devices are generally inexpensive, while active devices may cost more. No national average price is published for this, so Radon411 does not give one. What testing costs.

Which counties border Washington County?

Washington County borders 7 counties, derived from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county's report can be relevant.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

The EPA zone on this page describes Washington County as a whole. It is a prediction for an area, and it does not measure your building.

Washington County in figures

The figures above, said in words

What the published data says about Washington County, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places Washington County in Zone 3, lower predicted potential, as it does 214 other counties of Texas's 254.

      Of the 7 bordering counties, EPA places Austin County, Brazos County, Burleson County, Fayette County, Grimes County, Lee County and Waller County in Zone 3.

  • Reported tests

    Measured

    CDC has no annual testing figure for Washington County on file here.

  • Local record

    Texas's radon program is the Texas Radon Group, run by Texas Tech University; its contacts are under Local resources.

    The county's largest incorporated places are Brenham and Burton; the figures here cover them as part of the county.

Products

Washington County, Products

Testing and mitigation products

Whatever the figures for Washington County show, only a test tells you about one home.

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for Washington County homes, compared

Testing

5

Mitigation

3

Explore

Washington County, Bordering counties

Counties bordering Washington County

Calculated by Radon411
Why bordering counties matter

7 counties share a boundary with Washington County, computed from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county’s report can be worth reading alongside this one.

Washington County, Cities and towns

Cities and towns in Washington County

The radon figures on this page are for Washington County as a whole. They do not differ by city or town.

  • Brenham
  • Burton

2 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files.

Washington County, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.