Assemble and install valves and fittings; install, repair and maintain water treatment equipment, piping and controls, underground storm sanitary and water piping systems, sinks, tubs, toilets, water heaters, conditioners, plumbing fixtures, appliances and trim. As the Plumbing Service Apprentice, you will play a critical role in supporting experienced Plumbing Service Professionals by assisting with the installation, maintenance, and repair of plumbing systems.