11 Machines that create or generate a fluid chemical biocide or that are used, in connection with a fluid chemical biocide, to cleanse, disinfect, sterilize or wash; residential, municipal and agricultural potable and non-potable water, supply systems, water treatment systems and water filtration systems, namely, drinking water, pool water, process water, waste water, waste water treatment systems, air conditioners and cooling tower filtration systems and pool filtration systems; and air emission control equipment, namely, air scrubbing and odor control equipment and machinery