American Aqua Systems, Inc. began building point of use drinking water systems about 10 years ago utilizing the same high purity methods we use in a our medical and research water systems. Below is our AAS, Inc. Pure Water Dispenser complete with a 4 stage reverse osmosis system, ozone sterilizer, leak detection with alarm and hot, cold and room temperature options. These units are very popular for their ease of use and long term value over the 5 gallon jug style water coolers.