Katadyn began business in Switzerland since 1928. With their easy to use products, you can have safe and convenient drinking water whenever safe drinking water isn’t available. Whether you are traveling, backpacking, camping, or yachting. Or you may be in the military, have an emergency or working in humanitarian operations. You can be assured that you are drinking safe water when using Katadyn. Katadyn® Micro Microfilter Bottle - Water Filter. This meets EPA standards. Katadyn® Micropur MP1 Water Purification Tablets are easy to use with no unpleasant taste. The water tastes fresh and is effective against viruses, bacteria, cryptosporidium, and Giardia. Katadyn® Pocket Microfilter is long lasting with continuous use even under extreme circumstances.