According to The Rural Blog, almost 42,000 water sources in the United States are potentially polluted with per- and poly-fluoroalkyl substances (PFAs), chemicals found in everyday items.

From the story: “Nearly 42,000 locations in the U.S. may be sources of water pollution from long-lasting toxic chemicals called per- and poly-fluoroalkyl substances, or PFAs, according to new research from the Environmental Working Group, a nonprofit advocacy organization.

PFAs are sometimes called “forever chemicals” because they build up in organisms and never break down in the environment. They are linked to birth defects, cancers, infertility and reduced immune responses, but most water systems lack the technology and funds to filter them out, and there are little or no legal requirements for them to do so.”

PFAs have been found in greater concentrations around military bases and airports, including manufacturing facilities that create products containing PFAs.

To read the rest of the story and see the interactive map labeling PFA concentrations, click here.