My understanding is that just because you live in a blue area of the map doesn't mean you have contaminated water. Also, note that this paper only looks at pub

My understanding is that just because you live in a blue area of the map doesn't mean you have contaminated water. Also, note that this paper only looks at public water supply testing data, not private well water. From the linked article: "From the authors of the study: We have mapped watersheds in the United States that have potentially high concentrations of PFASs based on U.S. EPA data. This does not mean that all drinking water supplies within the highlighted regions contain high PFAS concentrations, but that at least one sample from at least one water supply was reported to be at or above levels considered safe by the U.S. EPA between 2013 and 2015. However, no measurements have been made in many water supplies across the country. We recommend increased monitoring of these contaminants in our drinking water. For more information, please contact the EPA: Cathy Milbourn, Milbourn.cathy@Epa.gov, or Monica Lee, Lee.monica@Epa.gov." I'll follow up with my colleague to see if she has any thoughts.