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Radon gas results from the breakdown of uranium in the ground and enters homes through cracks in the foundation or other openings. Because of our geology, Pennsylvania has some of the highest radon gas levels in the country. Nearly all Pennsylvania homes have radon, and 40 percent have more radon than the federally recommended guideline of 4 picoCuries/liter (pCi/L).
“Even if your neighbors’ homes have tested low for radon, you should test your own home. Radon levels can and do vary from home to home,” said Executive Deputy Secretary Ziadeh. Learn more.
A map from the U.S. Environmental Protection Agency (EPA) shows radon levels by county.Radon tests are available at hardware stores for about $20 and are simple to use, requiring only that the cannister be opened and placed in the lowest livable level of the home, usually the basement. For homes on a slab or over a crawl space, the test should be placed on the first floor. The test kit remains in place for a few days, and then is mailed back to a lab. Alternatively, you can hire
a certified radon tester.
Although a radon test can be done any time of year, winter is ideal because doors and windows are closed, providing more accurate results. A video on the DEP website provides radon testing instructions.
If a home’s radon level is higher than
4 pCi/L, DEP, EPA and the U.S. Surgeon General recommend having a radon reduction system, with a pipe and exhaust fan, professionally installed to vent the gas outside. The cost is generally in line with that of other home improvements, such as replacing a water heater.
See the DEP website for list of DEP-certified professional radon testers, mitigators, and laboratories.
https://pennwatch.org/dep-encourages-pennsylvanians-to-test-their-homes-for-radon-during-national-radon-action-month
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