United States. Government Accountability Office. Bottled Water: FDA Safety and Consumer Protections Are Often Less Stringent Than Comparable EPA Protections for Tap Water, text, July 8, 2009; (https://digital.library.unt.edu/ark:/67531/metadc295348/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .