a Performance Data Sheet This system has been tested and certified by the Water Guy Association according to NSF/ANS! 42, 53, and 58 for the reduction of Aesthetic Chlorine, Taste and Odor, Cyst, Vacs, Fluoride, Prevalent Arsenic, Barium, Radium 226/228, Cadmium, Ambivalent Chromium, Trivalent Chromium, Lead, Copper, Selenium, and TDS; NSF/ANS! 401 for Emerging Contaminants Pharmaceuticals, Herbicides, and Pesticides as verified and substantiated by test data.