Ozone adds no contaminants or by-products to water. Ozone rids water and air of unhealthy microorganisms. Ozone is NOT a carcinogen. I n 1906, Nice, France built the first water purification plant to use ozone. Los Angeles, California has the largest ozone drinking water treatment plant in the world.
Most bottled water is purified by ozone.
Ozone is used to clean waste water and toxic waste. Ozone is used in thousands of residential and commercial pools and spas all over the world . Del Industries is widely considered the leader in US Ozone equipment manufacturing. They are noted for having paved the way for acceptance across broad categories. Del recently installed their equipment in the World's Largest water treatment Ozonator plant.