Ozone Wastewater Treatment 1) Ozone is over 3000 times faster to purify water. 2) Unlike chlorine, ozone leaves no harmful chlorinated by-products in the water, ozone quickly reverts back to pure Oxygen if unused. 3) Chemical water treatment leaves long-term chemical effects on the environment, some of which are negative. Ozone does not. 4) Ozone is the strongest, fastest, commercially available disinfectant and oxidant for water treatment. 5) Ozone oxidation reactions take place several thousan