O3 Water Systems is a premier water treatment solutions manufacturer. Founded in 1994 by Gabe and Diane Ergler, the company has continued to grow and now manufactures Cascadian® Water branded pre-engineered residential and light commercial water filtration equipment. We now do business as Cascadian Water. We offer a Integrated Cartridge Solutions (ICS)® line of products that highlights our propriety PolyHalt® media. For information on these products and the rest of our product offering please visit our websites.