radon zone 1 Pennsylvania 3

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If you live in radon zone 1 Pennsylvania, that means the ground beneath your home has the highest potential for elevated radon levels. This odorless, radioactive gas seeps from soil into basements and crawlspaces, and long-term exposure is the second leading cause of lung cancer. Many homes in zone 1 have levels above the EPA action limit of 4 picocuries per liter, whether they're new or old. Testing is simple with a kit from a hardware store, and mitigation systems can reduce levels effectivel…