In a method of treating a substantially continuous flow of liquid waste in a series of decontamination tanks, the flow is directed into a tank and when liquid waste in the tank reaches a desired level the flow is directed into a next tank of the series. Ozone is bubbled through the waste in the tanks and the waste is agitated. When a disinfection period is complete in a tank, the treated liquid waste is drained into a disposal conduit that may be connected to a conventional sewer line. A sufficient number of decontamination tanks is provided such that a tank is available to receive the flow of liquid waste at all times.
