Interim Recommendations for Addressing Groundwater Contamination with PFOA and PFOS

The United States Environmental Protection Agency (U.S. EPA) recently released interim recommendations for screening levels and preliminary remediation goals to inform the development of final cleanup levels for PFOA and/or PFOS groundwater contamination at sites being evaluated and addressed under federal cleanup programs, including CERCLA and RCRA.

The recommendations are consistent with existing EPA guidance and standard practices, in addition to applicable statutes and regulations. The recommendations may be useful for state, tribal, or other regulatory authorities.

In a news release, U.S. EPA Administrator Andrew Wheeler stated, “The interim recommendations will provide clear and consistent guidance for federal cleanup programs and will help protect drinking water resources in communities across the country. This is a critical tool for our state, tribal, and local partners to use to protect public health and address these chemicals.”

U.S. Federal agencies and states have asked the U.S. EPA to provide guidance on this issue. After reviewing public comments on the agency’s April 2019 draft guidance, the U.S. EPA is finalizing these interim recommendations based on the available data and scientific information on PFAS toxicity. The U.S. EPA acknowledges that the scientific information on these compounds continues to evolve. As part of the PFAS Action Plan, the U.S. EPA is continuing to develop and assess toxicity information, test methods, laboratory methods, analytical methods, exposure models, and treatment methods, among other research efforts to improve the knowledge about this class of chemicals. As new information becomes available on other PFAS chemicals, the agency will consider additional recommendations as the agency advances its knowledge of these other substances.