No Federal MCL for Perchlorate, SAB Review PFAS Health Effects

March 31, 2022, EPA announced they have concluded their review of the July 2020 decision not to regulate perchlorate in drinking water. EPA concluded: “….the 2020 decision is supported by the best available peer reviewed science. EPA’s determination under the Safe Drinking Water Act does not impact any state standards.” This decision was released as part of a larger plan to address perchlorate contamination, please see the enclosed EPA document.

Link to EPA website for additional information on perchlorate:

SAB Meeting on PFOA and PFOS Health Effects
In April 1, 2022 Federal Register EPA announced that on May 3rd (noon to 5:00 pm, ET) and May 6th, (1:00 pm to 5:00 pm, ET), 2022 the Science Advisory Board (SAB) will meet to discuss their review of EPA’s documents regarding: (1) the health effects data to inform the derivation of proposed Maximum Contaminant Level Goals (MCLG) for PFOA and PFOS; (2) the analysis of health risk reduction benefits of potential decreases in drinking water concentrations of PFOA and PFOS and (3) approaches to assess the cumulative risk among mixtures of PFAS.

Copies of the draft EPA documents can be found at the following location:,19:P19_ID:970#doc