CSI/NAICS Codes

Code	Description
220000	Plumbing
220100	Operation and Maintenance of Plumbing
220140	Operation and Maintenance of Plumbing Fixtures
220500	Common Work Results for Plumbing
220529	Hangers & Supports for Plumbing Piping & Equip.
220576	Facility Drainage Piping Cleanouts
220700	Plumbing Insulation
220716	Plumbing Equipment Insulation
221100	Facility Water Distribution
221114	Solar Electric Power Generation
221116	Domestic Water Piping
221123.13	Domestic-Water Packaged Booster Pumps
221200	Facility Potable-Water Storage Tanks
221300	Facility Sanitary Sewerage
221310	Water Supply and Irrigation Systems
221316	Sanitary Waste and Vent Piping
221320*	Sewage Treatment Facilities
221343	Facility Packaged Sewage Pumping Stations
221413	Facility Storm Drainage Piping
221423	Storm Drainage Piping Specialties
221426.19	Facility Trench Drains
223000	Plumbing Equipment
223333	Light-Comm. Electric Domestic Water Heaters
223336.16	Comm. Storage Electric Domestic Water Htrs
223436	Commercial Gas Domestic Water Heaters
224000	Plumbing Fixtures
224300	Healthcare Plumbing Fixtures