If a test result is 4 pCi/L or higher, what should be done next?
The EPA has stated that in order for a home to be deemed safe, the radon levels should not exceed 4 pCi/L. You may want to consider a follow-up test should your test results come back slightly elevated in order to confirm whether radon levels are high enough to warrant mitigation. If the average of the initial test and the second test results are equal to or greater than 4 pCi/L, then radon mitigation is highly recommended. If the average of the two test results are less than 4 pCi/L, consider testing again sometime in the future.
