Can PFAS be removed from fish?

Can You Remove PFAS From Fish?

Unfortunately, no. Once PFAS—often called "forever chemicals"—are present in a fish’s tissue, they can’t be removed by any preparation method. These chemicals bind to proteins in the meat, meaning cutting away skin or fat, rinsing, or cooking won’t make a difference. Unlike bacteria or parasites, which can be reduced with proper handling or heat, PFAS are chemically stable and persist through all forms of cooking.

PFAS enter fish through contaminated water. Because they break down extremely slowly, they accumulate over time, especially in species higher up the food chain. This process, known as bioaccumulation, means older, larger fish—like bass, pike, or walleye—often carry higher concentrations.

There is no safe way to “clean” an infected fish, and health officials warn against relying on home preparation techniques to reduce exposure. The only real solution lies upstream: reducing PFAS pollution at the source. Until then, the best advice for anglers and consumers is to stay informed about local fish advisories and follow guidelines from environmental and health agencies.

In areas with known contamination, authorities often recommend limiting or avoiding the consumption of certain fish altogether. While it’s disappointing that something like grilling or filleting can’t make a contaminated fish safe, awareness and caution remain the most effective tools. Simply put: if the fish has PFAS, the chemicals stay—with the fish, and potentially, with you.