SP129 Water Filtration System with 32-ounce Pouch. About Sawyer. Sawyer Products PointOne Water Filter. Sawyer PointOne screw-on water filter. This makes it impossible for harmful bacteria, protozoa, or cysts like E. coli, Giardia, Vibrio cholerae, and Salmonella typhi (which cause Cholera and Typhoid) to pass through the filter.
