What are PFAS?
Per- and polyfluoroalkyl substances (PFAS) is a group of synthesized chemicals. These chemicals have been used since the 1950s due to their waterproof, non-stick, and stain-resistant properties.
Common uses include cookware (non-stick coating), food packaging (non-stick coating), water-resistant clothing, cosmetics and personal care products, firefighting foam (AFFF), and textiles, leather, and paper.
Why are PFAS a concern for drinking water?
PFAS may affect the reproductive system, cause cancer, suppress the immune system, and cause thyroid problems.
Why PFAS are called ‘forever chemicals’
PFAS bonds are among the strongest in organic chemistry, so these compounds resist breakdown by water, heat, and biological processes. Once released into the environment, they persist for decades.
Effective Methods for Removing PFAS from Drinking Water
Activated carbon filtration, reverse osmosis, and ion exchange resins have all been shown to reduce PFAS. Point-of-use systems protect individual taps; whole-house systems treat all incoming water. Filter media must be replaced on schedule to maintain performance.
Rajah Filter double-action process
Our PFAS-targeted media combines physical adsorption on high-surface-area coconut carbon with chemical adsorption on functionalized sites, achieving effluent concentrations below the 20 ppt threshold defined by NSF/ANSI 53.
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