WQA-certified NSF/ANSI 42+53; reduces chlorine, mercury, copper, zinc, cadmium
Brita's own published performance data sheet states the Standard filter (Model OB03) is certified by WQA against NSF/ANSI Standards 42 and 53, reducing chlorine taste and odor, mercury, copper, zinc, and cadmium, and lasts about 40 gallons or two months


