Monitoring and Occurrence of PFAS in Drinking Water | AAAS EPI Center
PFAS levels at these sites with raw (untreated) water entering the WTP. Consulting with PFAS experts in the water industry or other utilities experienced in PFAS contamination issues is advised. Figure 5 - Example of a PFAS Sampling Approach
Analytical Methods for PFAS Measurement Are Available Measuring PFAS levels in water presents several analytical challenges, including different degrees of accuracy. Analytical methods vary with respect to the number and type of PFAS that can be measured, detection limits (i.e., the lowest levels of PFAS that can be reliably measured), applicable sample matrices (i.e., materials, such as water or soil), and cost. EPA-validated methods are available for measuring PFAS levels in drinking water, surface water, groundwater, and wastewater. While reliable methods are also available (or in development) for other materials possibly contaminated with PFAS (including wastewater, landfill leachate, biosolids, soil, and materials such as concrete), these methods are not yet EPA-validated. Accurately measuring PFAS concentrations at the ng/L (ppt) level requires expensive laboratory equipment and careful sample preparation. More extensive preparation procedures and more complicated laboratory methods are necessary for samples of solid materials (e.g., soil). At
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