Perfluorooctanoic acid (PFOA), an emerging drinking water contaminant: a critical review of recent literature.

It is suggested that continued human exposure to even relatively low concentrations of PFOA in drinking water results in elevated body burdens that may increase the risk of health effects, and the human dose-response curve for several effects appears to be steepest at the lower exposure levels, including the general population range, with no apparent threshold for some endpoints.