Perfluoroalkyl and polyfluoroalkyl substances (PFAS), dubbed "forever chemicals," are remarkably useful yet pose one of the planet's most significant pollution threats. Their exceptionally strong carbon-fluorine bonds bind to proteins, accumulating in human organs and blood for centuries. These chemicals, first developed for the Manhattan Project in the 1940s, were known to be dangerous from their inception. Early industrial workers and surrounding communities experienced severe health issues, including chemical burns and birth defects, yet this information was suppressed.
Post-war, companies like 3M and DuPont mass-produced PFAS for commercial use in products ranging from cookware to clothing. By the 1960s, these manufacturers were aware of the chemicals' toxicity and their presence in human blood worldwide. Studies linked PFAS exposure to various cancers, organ damage, and birth defects. Internal documents reveal a cold calculation by DuPont to continue exposure rather than incur additional liability costs.
Despite the known risks and the inability to establish a safe exposure level, regulatory oversight lagged. The chemical industry actively lobbied to downplay scientific findings and influence policy. Even the shift to shorter-chain fluorocarbons, like Gen X, has proven equally or more problematic, as these chemicals are more mobile and difficult to remove from water.
Combating PFAS contamination requires regulating them as a class, not individually. While some regions are implementing class-wide bans, the industry continues to fight for loopholes. Europe's potential ban offers a significant opportunity to curb the widespread pollution of these persistent chemicals.