PFAS in Drinking Water Is a Bigger Problem Than You Think
Dec 17, 2025•8 min
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Episode description
- Per- and polyfluoroalkyl substances (PFAS) are a large class of synthetic compounds built around extremely strong carbon-fluorine bonds. They're used to make products nonstick, waterproof, and stain-resistant
- A California biomonitoring study of 563 adults found that even low, detectable PFAS levels in public water systems were linked to 30% to 80% higher PFAS in blood
- PFAS aren't just in water — testing has found very high PFAS markers in soft contact lenses, wild freshwater fish, and some activewear leggings
- Health concerns linked to PFAS exposure include liver toxicity, immune and hormone disruption, cancer, high cholesterol, and developmental and reproductive effects
- You can reduce your personal exposure to PFAS by filtering your tap water, steering clear of most nonstick and stain-resistant products, and selecting PFAS-free personal care items
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