:INFO PFAS: 80 Years of "Forever" and the 2026 Science That May End Them Per- and polyfluoroalkyl substances (PFAS) are a family of roughly 15,000 synthetic chemicals built around one of the strongest bonds in chemistry: the carbon-fluorine bond. They do not break down naturally. They accumulate in soil, water, and human tissue. They have been detected in the blood of 97 percent of Americans, in Arctic wildlife, in rainfall above the Himalayas, in deep-sea fish. The same properties that made them invaluable to industry, heat resistance, non-stick surfaces, waterproofing, fireproofing, are the properties that make them almost impossible to destroy. In 2026, three separate research teams changed that sentence to "almost." :STATS :QUOTE [quotetype:plain, subtitle:US Environmental Protection Agency] No level of PFAS in drinking water is without risk. We are establishing the first enforceable federal limits to protect communities across the country. :JOURNEY How Scientists Are Killing Forever Chemicals 1 Photolysis 2 Filtration 3 Chemical degradation 4 Sonochemistry 5 Status :CHECKLIST Where PFAS Come From: The Everyday Sources [ ] - [x] Non-stick cookware (PTFE coatings, though most PFAS were phased out of new pans by 2015, older ones still leach) [ ] - [x] Food packaging (microwave popcorn bags, fast-food wrappers, pizza boxes) [ ] - [x] Firefighting foam (AFFF used at airports and military bases is the source of many of the worst groundwater plumes) [ ] - [x] Waterproof clothing and outdoor gear (Gore-Tex and similar membranes) [ ] - [x] Stain-resistant carpets and upholstery (treated fabrics shed PFAS over time) [ ] - [x] Dental floss (some brands use PTFE coating, confirmed to raise blood PFAS levels) [ ] - [x] Cosmetics (particularly mascaras, foundations, and waterproof products) :NOTE The 4-parts-per-trillion EPA drinking water limit for PFOA and PFOS, established in 2024, is among the most stringent environmental standards ever set. To put that in perspective: 4 ppt is roughly one drop of water in 15 Olympic swimming pools. Many US municipal water systems do not yet meet the standard. :NOTE PFAS were first synthesised in the 1930s. DuPont commercially adopted polytetrafluoroethylene (Teflon) in 1946. 3M manufactured PFOS for decades before phasing it out in 2002 after internal studies revealed it accumulating in human blood. Both companies faced major litigation settlements. DuPont's Camp Lejeune-era exposure cases are still being litigated in 2026. :INFO What the 2026 Methods Cannot Yet Do None of the 2026 breakthroughs removes PFAS from the environment wholesale. They treat water that passes through a system. They do not clean contaminated soil, which holds the largest reservoirs of PFAS near military bases, airports, and industrial sites. Soil remediation would require extracting the groundwater, treating it, and reinjecting it, a process called pump-and-treat that can take decades. The science of breaking the carbon-fluorine bond is solved in principle. The engineering, the cost, and the scale are still the hard part. :LINK https://www.epa.gov/pfas US EPA PFAS information and 2024 drinking water standards :LINK https://pubs.acs.org/journal/esthag Environmental Science and Technology (Aarhus University UV study, April 2026)