PFAS Found in Water Filters After Marketed As PFAS-Free

New studies in the lab demonstrate that certain water filters said to be PFAS-free have the same chemicals in them that they say they remove

Tuesday, August 19, 2025 - Many people have bought special water filters that say PFAS-free because they are worried about PFAS contamination in their drinking water. However, new research shows that some of those filters might not work as well as they say they do. Several filter items that were claimed as being fully free of PFAS have been found to include trace amounts of the chemicals in independent lab tests and reports from consumer watchdog groups. The filters might still get rid of some PFAS from the water, but the way they are made or built might be adding the chemicals back into the water supply. One PFAS cancer lawyer thinks that this revelation might lead to a water contamination lawsuits over PFAS in drinking water, especially if it turns out that companies lied about the chemicals or were careless when making them. People who thought they were doing things to protect their health may have unwittingly come into contact with the toxins they were attempting to avoid. PFAS, or per- and polyfluoroalkyl compounds, are chemicals that can cause cancer, thyroid problems, developmental delays, and other health problems. PFAS are called forever chemicals because they don't break down in the environment. They can be found in everything from cosmetics to cookware to groundwater. The increase in filtration solutions was supposed to make people feel better, but now that trust is being questioned.

The U.S. Environmental Protection Agency (EPA) says that PFAS contamination is so common that even products made to get rid of it could be contaminated by other things. Some filters use membranes or activated carbon that are made in places where PFAS may be present. Even the way things are packaged or stored can leave behind small amounts of residue. Analysts in the industry are increasingly asking for third-party certifications and clearer information on the ingredients in water filtration devices. People can't be confident their filters are really PFAS-free unless someone else checks them. As new federal limits on PFAS in drinking water go into effect, retailers and manufacturers may have to follow stricter rules regarding what they may say in advertisements. Public health experts tell people to do their homework on companies and look for certifications like NSF/ANSI 53 or 58, which assess how well they remove contaminants. In the meantime, a number of class action lawsuits are already being filed against companies that are accused of making fraudulent claims and not doing a good job of quality control. Lawyers think that demonstrating injury will be hard but not impossible, especially if it can be demonstrated that people made health-conscious choices for themselves or their family based on the PFAS-free designation.

It's ironic that PFAS may be found in products that are supposed to get rid of them. This shows how deeply these chemicals have gotten into our environment and even our efforts to clean it. People should not have to be scientists to know what's in their water or how safe their filters are.

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