Water treatment systems take oxygen or dry air and convert the oxygen present into ozone. This ozone is then mixed with water for the specific water treatment application. There are a number of factors that can cause these systems to fail. The potential for back flow exists since the gas must flow from the generator into the water, so there is a pathway for water to back flow into the generator. This is compounded because ozone can be injected, via a venturi, into water that is at a higher pressure than that inside of the ozone generator.