An ozonated liquid dispensing unit , comprising: a liquid input port to receive water into the unit from a water supply; a first dielectric cell to produce ozone gas; the first dielectric cell comprising an output trap connected to an output end of the first dielectric cell ; a second dielectric cell for producing ozone gas; the output trap of the first dielectric cell in communication with an input trap of the second dielectric cell for supplying the second dielectric cell with a supply gas comprising ozone gas generated from the first dielectric cell , and the second dielectric cell produces additional ozone gas from the supply gas; an injector in fluidic communication with the liquid input port ; the injector in supply communication with the second dielectric cell for receiving the ozone gas from the first and second dielectric cells , wherein the injector mixes the ozone gas from the first and second dielectric cells with the water from the liquid input port to produce an ozonated liquid; and, a reaction vessel , the reaction vessel comprising a housing , the housing defining an interior; a first end comprising an entry port for the ozonated liquid; a second end comprising an exit port for the ozonated liquid; a cone positioned in the interior of the housing between the entry port and the exit port; and a liquid output port to discharge the ozonated liquid from the unit ; wherein the cone comprises a first cone end and a second cone end , wherein the first cone end has a smaller external diameter than the second cone end , and wherein the entry port directs the ozonated fluid toward the first cone end . a liquid input port to receive water into the unit from a water supply; a first dielectric cell to produce ozone gas; the first dielectric cell comprising an output trap connected to an output end of the first dielectric cell ; a second dielectric cell for producing ozone gas; the output trap of the first dielectric cell in communication with an input trap of the second dielectric cell for supplying the second dielectric cell with a supply gas comprising ozone gas generated from the first dielectric cell , and the second dielectric cell produces additional ozone gas from the supply gas; an injector in fluidic communication with the liquid input port ; the injector in supply communication with the second dielectric cell for receiving the ozone gas from the first and second dielectric cells , wherein the injector mixes the ozone gas from the first and second dielectric cells with the water from the liquid input port to produce an ozonated liquid; and, a reaction vessel , the reaction vessel comprising a housing , the housing defining an interior; a first end comprising an entry port for the ozonated liquid; a second end comprising an exit port for the ozonated liquid; a cone positioned in the interior of the housing between the entry port and the exit port; and a liquid output port to discharge the ozonated liquid from the unit ; wherein the cone comprises a first cone end and a second cone end , wherein the first cone end has a smaller external diameter than the second cone end , and wherein the entry port directs the ozonated fluid toward the first cone end . <EOS>