Certain perfluorinated chemicals (PFCs) are regularly found to be contaminants in surface water. Some of these compounds have been found to be toxic in laboratory animals, meaning they could also affect resident fish populations. EPA researchers participate in a collaborative effort to investigate PFC levels in surface waters and their resident fish populations. Consumption of water and fish containing PFCs are thought to be possible contributors to the amount of PFCs found in humans.

EPA researchers are working to determine the link between water concentrations of PFCs and fish populations. The data produced from this research will support policies related to fish consumption, adding to the protection of human health. The data will also be used to compare surface water tested to other waters throughout the nation in an effort to establish ways to mitigate risks.