The National Advertising Division (NAD) in the U.S. has recommended that Sawyer Products discontinue certain claims for the company's point-of-use water filter products. The claims included: 1 Million Gallons Guaranteed; Cartridge Life: 1,000,000 gallons; Tested and Verified by the United Nations; and The Sawyer Hollow Filter Membrane filter is the only filter on the market that easily and effectively removes Bacteria (such as Salmonella, Cholera, and E. coli) and Protozoa (such as Cryptosporidium and Giardia) without adding harmful chemicals to the water. These claims, made by the advertiser on its website and on product packaging, were challenged by Katadyn North America, maker of competing products. However, the NAD found that the company could support the claim that its product “exceeds EPA recommendations for removal rates” of bacteria and protozoa. EPA is the acronym for the Environmental Protection Agency.