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About This Item

 

Full Description

The purpose of this Standard is to establish minimum requirements for materials, design and construction, and performance of drinking water treatment systems that are designed to reduce specific health-related contaminants in public or private water supplies.

This Amendment contains the following revisions:
  • Issue 94 - The revision corrects an error recently found in NSF/ANSI 53. When the standard was reformatted several years ago, section 1.3 - Alternate materials, designs, and construction was mistakenly omitted (it is currently still listed in NSF/ANSI 42). This language has been reinserted to its previous location under section 1.
  • Issue 95 - The revision allows for a shorter cycle time for performance indication devices (PID) during the flow test method under section 6.
  • Issue 96 - The revision allows for alternate methods for enumerating the stock oocyst and microsphere suspensions.
  • Issue 97 - The revision removes the reference to using formaldehyde as a disinfectant when perparing oocyts in the procedure under Annex A of NSF/ANSI 53.
 

Document History

  1. NSF/ANSI 53-2020


    Drinking Water Treatment Units - Health Effects

    • Most Recent
  2. NSF/ANSI 53-2019


    Drinking Water Treatment Units - Health Effects

    • Historical Version
  3. NSF 53-2018


    Drinking water treatment units - Health effects

    • Historical Version
  4. NSF 53-2017


    Drinking water treatment units - Health effects

    • Historical Version
  5. NSF 53-2016


    Drinking water treatment units - Health effects

    • Historical Version
  6. NSF 53-2015


    Drinking water treatment units - Health effects

    • Historical Version
  7. NSF 53-2014


    Drinking water treatment units - Health effects

    • Historical Version
  8. NSF 53-2013 Addendum 1

    👀currently
    viewing


    Drinking water treatment units - Health effects - Addendum 1

    • Historical Version
  9. NSF 53-2013


    Drinking water treatment units - Health effects

    • Historical Version
  10. NSF 53-2012


    Drinking water treatment units - Health effects

    • Historical Version
  11. NSF 53-2011a


    Drinking water treatment units - Health effects

    • Historical Version
  12. NSF 53-2011


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  13. NSF 53-2010


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  14. NSF 53-2009e


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  15. NSF 53-2009


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  16. NSF 53-2007a


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  17. NSF 53-2007


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  18. NSF 53-2006


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  19. NSF 53-2005


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  20. NSF 53-2004


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  21. NSF 53-2002e


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  22. NSF 53-2002


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  23. NSF 53-2001


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  24. NSF 53-2000a


    Drinking Water Treatment Units-Health Effects

    • Historical Version
  25. NSF 53-2000


    Drinking Water Treatment Units-Health Effects

    • Historical Version