EPA Seeks Public Input on Its Draft Toxicity Assessment for Genx Chemicals

The U.S. Environmental Protection Agency (EPA) is now seeking public input on draft toxicity assessments for GenX chemicals and perfluorobutane sulfonic acid (PFBS), members of a larger group of per- and polyfluoroalkyl substances (PFAS).

The draft assessments are part of EPA’s efforts to increase the amount of research and information that is publicly available on chemicals in the PFAS family.

“EPA is delivering on its commitment to provide our state and local partners the tools and information they need to address PFAS,” says EPA Acting Administrator Andrew Wheeler. “The draft toxicity assessments are part of our forthcoming management plan, but we are releasing the draft assessments now to provide this information and give the public the opportunity to provide input as soon as possible. These draft toxicity assessments reflect the best available science, as well as our extensive community engagement, and are critical to our efforts to help communities impacted by PFAS.”

EPA continues to work to develop a PFAS Management Plan that will outline the agency’s approach to addressing the PFAS challenge. The agency is working to release the plan as soon as possible, according to Wheeler. While the draft toxicity assessments are part of the management plan, the agency is releasing them now to ensure that communities across the country have access to this information as soon as it is available.

Once final, states, tribes and communities can use the information the agency is providing to assess risks, which will help them develop risk management plans and protect their residents.

To develop these draft toxicity assessments, the agency relied on the best available science, including input from independent peer reviewers, according to EPA officials. The agency also says it engaged with federal and state partners throughout the development of the draft assessments.

When issued, these toxicity assessments may be used by federal partners, states, tribes and local communities — along with specific exposure and other relevant information to determine, under the appropriate regulations and statutes — if and when it is necessary to take action to address potential risk associated with human exposures to these PFAS chemicals.

EPA will accept public comments on the GenX chemicals and PFBS draft toxicity assessments for 60 days after they are published in the Federal Register. EPA will then consider the public comments, revise the documents and consider the need for additional review.



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