On today’s episode of The Confluence: The state has begun to regulate harmful PFAS chemicals, but plans for federal regulation could alter the trajectory; a Duquesne professor weighs in on how K-12 schools can support students’ mental health at a time when pediatric and child psychiatric groups are declaring a state of emergency; and we visit an illegal dumpsite in the east hills with a crew of “DumpBusters” ready to clean it up.