An ozone delivery system, method, and apparatus are disclosed. Ozonated water can be used to disinfect and clean various surfaces, equipment, and animals in a dairy setting. Animals can be disinfected and protected from disease through the use of wash-pen and sprayer injections, and other footbath products. Ozone can be educted into a drop hose and a pre-dip line at periodic intervals and into a foot bath to provide refreshed ozonated water. The ozone delivery system and method sterilizes all equipment and floor surfaces without damaging diary equipment components. The system can incorporate computer-controlled options such as maintaining off gas levels, maintaining cleaning and disinfecting records, monitoring ozonated water levels, monitoring concentrations of ozone in said ozonated water, controlling entry and exit gates, controlling a drainage system, and monitoring and educting ozone in a foot bath and wash pen.