The relative sizes of the symbols correspond to the actual measured water concentration. The legends show exemplar concentrations. Data were extracted from EPA’s UCMR-3 (2013-2015) database (US EPA 2017). Plotted: log_10 (concentration), excluding data below minimum reporting levels.
Click legend to toggle PFAS chemicals. Hover over symbols to see concentration data at specific locations.
US EPA (US Environmental Protection Agency). 2017. The Third Unregulated Contaminant Monitoring Rule (UCMR 3): Data Summary, January 2017. https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule#3
Map by Josh Naiman, BA., Associate, LaKind Associates, LLC