Assembles, installs, modifies, and repairs; pipes, fittings, fixtures, various types of valves, backflow preventers, utility systems, disposal systems, sewage systems, water, waste vent and gas distribution systems, oil, compressed air, vacuum, grease trap and acid systems, cooling or heating water systems, drainage systems, hydrants, water closets, tubs, showers, faucets, sinks, commodes, bathtubs, hot water heaters, hot water tanks, garbage disposal units, dishwashers, and water softeners, fire sprinkler systems, and pumps according to specifications and plumbing codes. The Plumber is responsible for routine and non-routine operations, maintenance, and repairs of fire alarm systems, sprinkler control systems, domestic water systems, sanitary systems, steam and other piping distribution systems, and renovations for commercial facilities systems in a large commercial complex with laboratories.