11 Equipment for use in water treatment and purification in municipal, industrial, or beverage facilities, including wastewater, sludge, wastewater re-use, and drinking water treatment applications, namely, headworks and separations equipment, filters, biological process and disinfection equipment, sludge incineration systems, systems for biological or UV treatment of water and wastewater; electric pumps sold as a component of water treatment units, filtration and aeration machines, mixers, decanters for separating treated water from solids and sediment