Can PFAS from food packaging end up in your blood through tap water?
Yes. People who drank tap water with higher PFAS levels had measurably higher PFAS in their blood, confirming drinking water is a major exposure route.
What's actually in it
PFAS get into drinking water from industrial discharge, firefighting foam runoff, and contaminated groundwater. Standard water treatment doesn't remove most PFAS. They pass right through the treatment plant and into your tap.
Every glass of water, pot of coffee, and bowl of soup made with tap water delivers a dose. Over months and years, PFAS accumulate in your blood because your body can't break them down.
What the research says
A 2026 study in J Expo Sci Environ Epidemiol compared PFAS levels in public water systems to PFAS levels in the blood of adults who drank that water. The study covered Southern California communities.
People drinking water with higher PFAS concentrations had higher blood PFAS levels. The relationship was direct and dose-dependent.
Multiple PFAS types were found in both the water and the blood. PFOS, PFOA, and PFHxS were the most common, all coming from nonstick products, food packaging, and industrial sources.
A home water filter with activated carbon or reverse osmosis removes most PFAS from tap water. It's one of the most effective steps you can take to lower your daily PFAS exposure.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Associations between PFAS in public water system drinking water and serum among Southern California adults. | J Expo Sci Environ Epidemiol | 2026 |
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