11
Agricultural, industrial, and domestic irrigation units and systems comprised of pumps, fittings, flanges, cones, hoses, wheel lines, hand lines, mainlines, hose reels, pipes, valves, filters, nozzles, sprinklers, regulators, and wiring; water filtering units, waste water treatments tanks, water purification tanks, water storage tanks, and plumbing fittings, namely, bibs, cocks, traps, valves, flange, cones, for domestic use; Water treatment equipment, namely, water softeners, water filtering units for agricultural, industrial, and domestic use, iron removal units, reverse osmosis units, ultraviolet light, sterilization units, electrolytic chlorinator units for disinfecting or sanitizing wastewater, water sterilizers, and water conditioning units for water treatment; livestock water systems, namely, mechanized livestock waters and non-mechanized livestock watering units
37
Installation, repair, and maintenance of agricultural, industrial, and domestic irrigation systems, water systems, water treatment systems, drainage systems, and deep well pump systems
42
Design and consultation of agricultural, industrial, and domestic irrigation systems, water systems, water treatment systems, drainage systems, and deep well pump systems; Water testing services, namely, water analysis