New radon testing regulations for commercial buildings implemented by EPA

On March 21, 2025, the Pennsylvania Legislature introduced Senate Bill 497, aimed at addressing public health concerns related to radon exposure in commercial buildings. The bill mandates comprehensive testing and reporting protocols for radon levels, a naturally occurring radioactive gas linked to serious health risks, including lung cancer.

Key provisions of Senate Bill 497 require commercial building owners to conduct initial radon tests and publicly disclose the results, including the date of testing and the highest radon level recorded. If a building is found to have radon levels exceeding four picocuries per liter, a threshold deemed potentially dangerous by the United States Environmental Protection Agency (EPA), the bill prohibits public access until remediation measures are implemented and a follow-up test confirms safe levels.

The legislation also stipulates that commercial building owners must conduct subsequent radon tests every five years to ensure ongoing safety. Test results must be maintained on file and made available for public review, enhancing transparency and accountability.

Debate surrounding Senate Bill 497 has highlighted concerns about the financial burden on small business owners and the feasibility of compliance with the testing and remediation requirements. Proponents argue that the health benefits of reducing radon exposure far outweigh the costs, while opponents caution about the potential economic impact on businesses.

The implications of this bill are significant, as it seeks to protect public health by reducing radon exposure in commercial spaces, particularly in areas known for higher radon levels. Experts suggest that if enacted, the legislation could lead to increased awareness of radon risks and encourage more proactive measures in residential settings as well.

As the bill progresses through the legislative process, stakeholders will be closely monitoring its developments, particularly regarding any amendments that may address concerns raised during discussions. The outcome of Senate Bill 497 could set a precedent for similar health-focused legislation in other states, emphasizing the importance of environmental safety in public spaces.