What Is The Highest Acceptable Radon Level?

Environmental Protection Agency (EPA) in the US has set an acceptable radon level of 4 picocuries per liter (pCi/L). Radon is an naturally occurring gas that seeps into homes from underground, potentially leading to health concerns like lung cancer if levels exceed this limit.

While no level of exposure to radon is considered completely safe, the Environmental Protection Agency has set forth the Action Level of 4 pCi/L as the point at which homeowners should begin taking measures to lower levels in their home. They advise all households be tested for radon levels and that action be taken if levels surpass this recommended action level.

If a home tests above 4 pCi/L for radon levels, steps should be taken to mitigate it. Radon mitigation typically includes installing an effective ventilation system such as sub-slab depressurization system that uses fans to pull radon out from underneath foundation and vent it outdoors.

Noting the dangers posed by even lower levels of radon is important; even lower concentrations pose health risks and should be minimized as soon as possible. To achieve maximum protection, taking steps to lower them as much as possible may be beneficial.

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