2012 Edition

national industry 221310

Water Supply and Irrigation Systems


This industry comprises establishments primarily engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses.

The immediate parent of national industry 221310 is international industry 22131: Water Supply and Irrigation Systems


The NAICS editions in which this code was present are indicated below. In the event that a code was changed from the prior edition the equivalent value in that edition is provided for reference.

Edition Value
2002 221310 -
2007 221310 -
2012 221310 -
2017 221310 -

Standard Industrial Classification (SIC) Mappings

  1. 4941 - Water Supply
  2. 4971 - Irrigation Systems

Insurance Industry Mappings

The US Property and Casualty Insurance Industry may use the following classification descriptions which might encompass national industry 221310, Water Supply and Irrigation Systems:

  1. irrigation or drainage system
  2. irrigation system
  3. irrigation work
  4. irrigation work operation
  5. irrigation work operation with dam
  6. irrigation work operation without dam
  7. office water company condominium office
  8. office water company office
  9. pipeline operation non flammable
  10. pipeline operation non flammable utility
  11. utility
  12. water company
  13. water company condominium office
  14. water company general liability is not available
  15. water company office
  16. water sewage and other system
  17. water supply
  18. water supply and irrigation system
  19. water treatment plant
  20. waterwork
  21. waterwork operation


What's the difference between HD and SD? See our methodology.