Why Treatment is Needed?
Because PFOS and PFOA compounds were produced and used in large quantities, many humans have been exposed to them. Consumer products and food are the most typical sources of exposure to these chemicals as well as drinking water from sources with contaminated water supplies. Additionally, PFCs have been found in air, water, and soil at locations where they were produced or used across the United States.
Today there are a limited number of ongoing uses of PFCs and related chemicals as most of the major manufacturers of the chemicals voluntarily phased out production in response to concerns from the U.S. Environmental Protection Agency (USEPA).
A Harvard study published in August 2016 found elevated levels of these two chemicals in 194 out of 4,864 water supplies in 33 states. The study found that the drinking water supplies of six million U.S. residents exceed the USEPA’s lifetime health advisory for contamination of PFOS and PFOA, and that nearly 17 million U.S. residents had PFASs in their water at or above the maximum EPA limit (data interpreted by CNN).
Currently, many municipal water systems are undergoing aggressive testing and treatment for PFOA and PFOS. Water sources near military bases, manufacturing sites, and other places where these chemicals have been made or used, or wherever else contamination is possible, are most at risk.