March 9, 2018
Dr. Jennifer Guelfo's new article, Evaluation of a national data set for insights into sources, composition, and concentrations of per- and polyfluoroalkyl substances (PFASs) in U.S. drinking water, has been published in Environmental Pollution.
This study uses a nationwide dataset of 36,139 samples to investigate the occurrence, sources, and implications of six per- and polyfluoroalkyl substances (PFASs) in drinking water in the U.S.. An important finding is that large (>10,000 customers) public water systems (PWSs) were 5.6 times more likely than small PWSs (10,000 customers) to exhibit PFAS detections; however, when detected, median total PFAS concentrations were higher in small PWSs than in large. Given that only a subset of small PWSs in the U.S. were sampled, these results raise questions regarding the potential for higher per capita PFAS exposure in the remainder of small systems.
This article can be read here.