22 00 00 Plumbing
22 01 00 Operation and Maintenance of Plumbing
22 01 10Operation and Maintenance of Plumbing Piping and Pumps22 01 10.16Video Piping Inspections22 01 10.51Plumbing Piping Cleaning22 01 10.61Plumbing Piping Repairs22 01 10.62Plumbing Piping Relining22 01 30Operation and Maintenance of Plumbing Equipment22 01 40Operation and Maintenance of Plumbing Fixtures22 01 50Operation and Maintenance of Pool and Fountain Plumbing Systems22 01 60Operation and Maintenance of Laboratory and Healthcare Systems