NSF/ANSI/CAN 50-2021 Historical

Document History

1. NSF/ANSI/CAN 50-2025

   October 2025
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   •  Most Recent

2. NSF/ANSI/CAN 50-2024

   July 2024
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   • Historical Version

3. NSF/ANSI/CAN 50-2023e

   November 2023
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   • Historical Version

4. NSF/ANSI/CAN 50-2023

   October 2023
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   • Historical Version

5. NSF/ANSI/CAN 50-2021

   👀 currently
   viewing

   November 2021
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   • Historical Version

6. NSF/ANSI/CAN 50-2020

   June 2021
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

   • Historical Version

7. NSF/ANSI/CAN 50-2019

   December 2019
   Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities (NSF/ANSI/CAN 50-2019)

   • Historical Version

8. NSF 50-2017

   August 2017
   Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

   • Historical Version

9. NSF 50-2016a

   December 2016
   Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

   • Historical Version

10. NSF 50-2016

    February 2016
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

11. NSF 50-2015

    January 2015
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

12. NSF 50-2014

    June 2014
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

13. NSF 50-2013

    December 2013
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

14. NSF 50-2012

    September 2012
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

15. NSF 50-2011 Addendum

    November 2011
    Addendum: Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

16. NSF 50-2011

    August 2011
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version

17. NSF 50-2010

    August 2010
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities

    • Historical Version

18. NSF 50-2009a

    May 2009
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities

    • Historical Version

19. NSF 50-2009

    February 2009
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities

    • Historical Version

20. NSF 50-2008

    February 2008
    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities

    • Historical Version

21. NSF 50-2007

    April 2007
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

22. NSF 50-2005 Addendum 1.0

    December 2006
    Addendum 1: Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

23. NSF 50-2005

    November 2005
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

24. NSF 50-2004

    March 2004
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

25. NSF 50-2001

    May 2001
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

26. NSF 50-2000

    May 2000
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version

27. NSF 50-1985

    January 1985
    Circulation System Components for Swimming Pools, Spas, or Hot Tubs

    • Historical Version

28. NSF 50-1979

    January 1979
    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs - WITHDRAWN - See current edition

    • Historical Version