Radon Testing in York, PA
Pennsylvania doesn't mandate radon testing for existing homes, but with York County's Zone 1 status and 68% of surveyed homes over the EPA action level, testing is the only way to know your actual exposure.
Radon is colorless, odorless, and undetectable without a test — which is exactly why York County's high average readings don't automatically mean your house is affected. Testing settles the question with a number, not a guess. If results come back high, have a mitigation system installed through a certified pro.
Buying a home in York County
Yes — testing before you buy is strongly recommended in York County, where a state-run survey found 68% of homes tested above the EPA's 4 pCi/L action level. Pennsylvania's Seller Disclosure Law requires sellers to disclose known radon test results and any installed mitigation system, but doesn't require the seller to have tested in the first place — so an independent test as part of your purchase process is the only way to be sure. More on disclosure rules on our FAQ.
New construction in York County suburbs
Yes — new homes still need radon testing. Radon-resistant construction features reduce risk but don't eliminate it, and they aren't a substitute for a post-occupancy test. PA DEP's certification exemption for new-construction radon-resistant features covers installation before occupancy only — it doesn't cover testing or mitigation needs that arise afterward.
What a test tells you
Standard short-term tests measure indoor radon in picocuries per liter (pCi/L). EPA's guidance: results at or above 4 pCi/L call for fixing; 2–4 pCi/L is worth considering; below 2 pCi/L is lower risk but not zero. Given York County's average reading of 15.5 pCi/L across a 68-home state-run survey, testing here carries real odds of landing at or above the action level — see the county data on radon levels. See Short-Term vs. Long-Term Radon Tests: Which Do You Need?.
Get connected to a tester
We connect York County homeowners with PA DEP-certified radon professionals for both testing and, if needed, radon mitigation in York, PA.
Frequently asked questions
Do homes in York need to be tested for radon?
Pennsylvania doesn't mandate radon testing for existing homes, but with York County's Zone 1 status and 68% of surveyed homes over the EPA action level, testing is the only way to know your actual exposure.
Should I test for radon if I'm buying a home in York?
Yes — testing before you buy is strongly recommended in York County, where a state-run survey found 68% of homes tested above the EPA's 4 pCi/L action level.
Do new homes in York County suburbs still need Radon Mitigation?
Yes — new homes still need radon testing. Radon-resistant construction features reduce risk but don't eliminate it, and they aren't a substitute for a post-occupancy test.
Get a Free Radon Estimate — testing included.