More people are drinking toxic “forever chemicals” than ever, EPA report finds

On Wednesday, the Environmental Protection Agency released newly-acquired data showing that over 143 million Americans are exposed to so-called “forever chemicals,” or PFAS. The source of this exposure is their drinking water — and as more data comes in, that number is expected to rise.

In the analysis, the EPA learned that 11 million more people are exposed to PFAS (per- and polyfluoroalkyl substances) in their drinking water than was previously reported. The EPA performs an annual set of studies known as the Unregulated Contaminant Monitoring Rule, of which this was the fifth iteration. The UCMR mandates that water utilities across the U.S. test drinking water for 29 different PFAS compounds. PFAS are linked to health problems like high blood pressure, liver disease, lowered sperm count, and various cancers.

The EPA believes that pesticides are a major source of this PFAS contamination. In a paper cited by the EPA in their research, scientists publishing in the journal Environmental Health Perspectives recommended “a more stringent risk assessment approach for fluorinated pesticides, transparent disclosure of ‘inert’ ingredients on pesticide labels, a complete phase-out of post-mold fluorination of plastic containers, and greater monitoring in the United States.”

A March report by the nonprofit Center for Biological Diversity (CBD) reached a similar conclusion. After discovering that pesticides are filled with PFAS, the center urged the EPA “to take control of this situation and remove pesticide products that are contaminated with these extremely dangerous, persistent chemicals.”

PFAS go by the nickname “forever chemicals” because they never organically degrade. The chemicals are fluorinated to prevent many microorganisms from breaking down the strong carbon-fluorine bonds. These bonds tend to be very chemically inert, which makes it difficult for biological systems to interact with them — but also makes them uniquely able to repel oil, water and stains. This is why they are popular in a wide range of consumer products from umbrellas and clothing to furniture, cookware and food packaging.