Ozone has been widely used in Europe for many years to disinfect water. Ozone is a viable means of disinfecting water for aquaculture. It has been proven effective against fish and human pathogens at very low dosage rates. Ozone is not as restricted as chlorination or ultraviolet radiation in the quality of water that can be treated. On-site production of oxygen will double the capacity of ozone generators and reduce costs accordingly as compared with compressed air systems. It will also eliminate the buildup of nitrous oxide and reduce annual maintenance. The aquatector could improve efficiency and eliminate the need for a contact chamber. Packed columns and stripping towers remove residual ozone and eliminate the cost of detention tanks.