Science Advisory Board (SAB) criticizes draft EPA PFAS documents over lack of transparency

Read the full story at Products Finishing.

In the first week of January 2022, the Science Advisory Board (SAB) PFAS Panel reviewed draft documents for deriving a maximum contaminant level goal (MCLG) for perfluorooctanoic acid (PFOA) or perfluorooctanesulfonic acid (PFOS) as well as an analysis of cardiovascular disease (CVD) risk reduction as a result of reduced PFOA and PFOS exposure in drinking water.  EPA uses health-based MCLGs to set enforceable drinking water standards after taking into consideration cost and technology concerns.  EPA will use the CVD document in its cost-benefit analysis for the enforceable drinking water standard…

EPA science advisors criticized several aspects of the draft documents the agency plans to use to set enforceable drinking water limits, saying that even when the agency’s approach appears to be reasonable, EPA has failed to adequately explain its rationale.  The criticisms follow, and in some cases echo, concerns a variety of public commenters have raised about the documents, where state health officials, industry groups and drinking water officials have said the documents contain numerous errors and inconsistencies. Specifically, the panel reviewed a draft framework for estimating noncancer risks associated with PFAS mixtures, raising concerns it could hamper ongoing state efforts to control the chemicals.

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