In July 2021, the California Office of Environmental Health Hazard Assessment (OEHHA) published, for review and comment, draft Public Health Goals (PHGs) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS).
Last week, OEHHA released a second draft of the proposed PHGs. The proposed PHGs just released are the same as published in 2021, and are presented below:
PFOA – 0.007 parts per trillion (ppt)
PFOS – 1 ppt
The deadline to submit public comments is August 14, 2023.
The proposed PHGs are based on the one in a million cancer risk estimates. According to information posted by OEHHA, the PFOA proposed PHG is based on kidney cancer in humans, and the PFOS proposed PHG is based on liver and pancreatic cancer in animal studies.
OEHHA’s announcement (https://wqts.com/wp-content/uploads/2023/08/PFAS-PHGs-OEHHA-Announcement.pdf ).
OEHHA’s second draft Technical Support document for the proposed PHGs can be found at the following link: