non-potable PFAS sampling

To Grab or to Composite...That is the PFAS Question!

The debate regarding the most appropriate method to collect non-potable liquids—specifically POTW influents and effluents—continues. Last month California State Water Quality Control Board (SWQCB) staff appeared to walk back parts of the original Phase III PFAS monitoring orders, directing the responsibility for making decisions regarding sampling techniques back to the agency and their laboratory. October is upon us and water treatment professionals are wondering…