![PFAS: How Scientists Are Finally Killing Forever C](https://cdn.slatesource.com/1/b/5/1b5a43ff-2a6b-4022-a3b2-f62b5db7d13b.webp) # PFAS: How Scientists Are Finally Killing Forever C - [Made in Slatesource](https://slatesource.com/@steph/pfas-how-scientists-are-finally-killing-forever-c) - By [Steph](https://slatesource.com/@steph) - Created on Jul 20, 2026 ## PFASPFAS: 80 YearsYears of "ForeverForever" and the 20262026 ScienceScience That MayMay EndEnd Them PerPer\- and polyfluoroalkylpolyfluoroalkyl substancessubstances (PFASPFAS) are a familyfamily of roughlyroughly 15,000000 syntheticsynthetic chemicalschemicals builtbuilt aroundaround oneone of the strongeststrongest bondsbonds in chemistrychemistry: the carbon-fluorinecarbon-fluorine bondbond. They do not breakbreak downdown naturallynaturally. They accumulateaccumulate in soilsoil, waterwater, and humanhuman tissuetissue. They have been detecteddetected in the bloodblood of 97 percentpercent of AmericansAmericans, in ArcticArctic wildlifewildlife, in rainfallrainfall aboveabove the HimalayasHimalayas, in deep-seadeep-sea fishfish. The samesame propertiesproperties that mademade them invaluableinvaluable to industryindustry, heatheat resistanceresistance, non-sticknon-stick surfacessurfaces, waterproofingwaterproofing, fireproofingfireproofing, are the propertiesproperties that makemake them almostalmost impossibleimpossible to destroydestroy. In 20262026, threethree separateseparate researchresearch teamsteams changedchanged that sentencesentence to "almostalmost." Known PFAS compounds ~15,000 Share of US adults with detectable PFAS in blood 97% Drinking water safety limit (EPA, 2024) 4 parts per trillion Years PFAS resist natural degradation effectively indefinite Countries with significant PFAS groundwater contamination 49+ > 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·5 Methods # How Scientists Are Killing Forever Chemicals Breakthrough / Method "Researchers at Aarhus University discovered that intense UV light at wavelengths below 300 nanometres generates hydrogen radicals from water itself. Those radicals strip fluorine atoms from PFAS chains one by one, a process called defluorination. No added chemicals required. The compounds break down into smaller, less persistent molecules. Published in Environmental Science and Technology, April 2026. "A team at Flinders University in South Australia engineered molecular cages sized to snap around PFAS molecules, including the short-chain varieties that conventional activated-carbon filters cannot capture. In lab tests, the cages eliminated up to 98 percent of PFAS from water samples and remained effective after multiple uses. The cages are reusable and recyclable. "Scientists at Oxford and Colorado State University combined PFAS with potassium phosphate salts, then milled the mixture using ball bearings under controlled conditions. The mechanical energy broke the carbon-fluorine bonds and liberated fluorine in a recoverable form. The result: PFAS destroyed, useful fluorine compounds recovered for industrial reuse. A rare win-win. "A fourth approach uses ultrasound to create and collapse microscopic bubbles in water. The collapse generates intense local heat, thousands of degrees for a microsecond, enough to snap carbon-fluorine bonds at the hot spot. The process is energy-intensive but scalable and requires no added reagents. "None of the four methods has yet been deployed at municipal water-treatment scale. Costs remain high, throughput is limited, and regulatory frameworks for disposing of degradation by-products are still being written. The EPA issued interim guidance on PFAS destruction and disposal in April 2026. Researchers at multiple institutions describe the next two years as the critical scale-up window. Where PFAS Come From: The Everyday Sources 0% \- \[x\] 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) 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. 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. ## What the 20262026 MethodsMethods CannotCannot YetYet Do NoneNone of the 20262026 breakthroughsbreakthroughs removesremoves PFASPFAS from the environmentenvironment wholesalewholesale. They treattreat waterwater that passespasses throughthrough a systemsystem. They do not cleanclean contaminatedcontaminated soilsoil, whichwhich holdsholds the largestlargest reservoirsreservoirs of PFASPFAS nearnear militarymilitary basesbases, airportsairports, and industrialindustrial sitessites. SoilSoil remediationremediation wouldwould requirerequire extractingextracting the groundwatergroundwater, treatingtreating it, and reinjectingreinjecting it, a processprocess calledcalled pump-and-treatpump-and-treat that can taketake decadesdecades. The sciencescience of breakingbreaking the carbon-fluorinecarbon-fluorine bondbond is solvedsolved in principleprinciple. The engineeringengineering, the costcost, and the scalescale are stillstill the hardhard partpart. [US EPA PFAS information and 2024 drinking water standards](https://www.epa.gov/pfas?utm_source=slatesource) [Environmental Science and Technology (Aarhus University UV study, April 2026)](https://pubs.acs.org/journal/esthag?utm_source=slatesource)