Protecting the public health and ensuring water is safe to drink is the highest goal of water system managers. Negative health effects are indicated from exposure to per- and polyfluoroalkyl substances (PFAS), such as perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonate (PFOS). Based on lab studies, the U.S. EPA has issued a health advisory for PFOA and PFOS in drinking water of 70 parts per trillion. While health advisories are not enforceable, they offer a margin of safety for consumers.
Water utilities finding high levels of PFOA and PFOS in the water are taking steps to reduce those contaminants. Finding the best and most cost-effective solution for PFAS removal can be challenging.
Calgon Carbon has been a leader in the water treatment industry for 75 years, originating innovative technologies for drinking water. Water Online spoke with experts from Calgon Carbon to discuss and compare two technologies used to remove these contaminants.