The state Department of Environmental Protection is proposing to set maximum contaminant levels for two forms of per and polyfluoroalkyl substances (PFAS). The proposed rule will affect water systems. The proposal would rule will set limits that are 4 times stricter that than the Federal EPA’s Health Advisory Level (HAL) for perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) from the current HAL of 70 parts per trillion (ppt) to 14 ppt for PFOA, and 18 ppt for PFOS. Once the proposed rule is published in the Pennsylvania Bulletin, there will be a 60-day public comment period. Click here for more.