Both GAC and IX have proven effective methods of PFAS treatment. While each water supply is unique, there are advantages and disadvantages to each treatment media. IX systems have smaller footprint than a comparable GAC system as they can handle higher loading rates (gallons per square foot) and have shorter contact times than GAC. IX media is more expensive to purchase and is currently considered one-time use and then it has to be removed/disposed, while GAC can be reactivated and reused. IX systems require additional pre-treatment considerations (e.g. dechlorination and bag filtration) as opposed to GAC systems.