UL 979-2005
UL Standard for Safety for Water Treatment Appliances First Edition

Standard No.

UL 979-2005

Release Date

2005

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2010-06

Replace By

UL 979 BULLETIN-2005

Latest

UL 979-2021

Scope

1.1 These requirements cover electrically operated water treatment appliances for household and commercial use. These appliances are intended for installation and use in accordance with the National Electrical Code, NFPA 70, and are rated 600 V or less.1.2 These requirements cover appliances utilizing features that treat water through the use of cation exchange water softeners, ionization, filters, ultraviolet radiation, ozone generation, and reverse osmosis. 1.3 These requirements do not cover water treatment appliances for use with pools or spas, water distillers, aquariums, or other equipment connected to plumbing that is covered by individual requirements. 1.4 These requirements do not cover appliances for use in hazardous locations as defined in the National Electrical Code, NFPA 70. 1.5 These requirements do not cover the aesthetic effects or the effectiveness of water treatment.

UL 979-2005 history

• 1970 UL 979-2021 UL Standard for Safety Water Treatment Appliances
• 2019 UL 979 BULLETIN-2019 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: April 3@ 2019)
• 2017 UL 979 BULLETIN-2017 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: October 9@ 2017)
• 2016 UL 979 CRD-2016 UL Standard for Safety Water Treatment Appliances - Section / Paragraph Reference: 25.3 Subject: Alternate requirements for parts subjected only to pump generated water pressure (Edition 2: September 29@ 2016)
• 2016 UL 979 BULLETIN-2016 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: NOVEMBER 3@ 2016)
• 2016 UL 979-2016 UL Standard for Safety Water Treatment Appliances (Second Edition; Reprint with revisions through and including November 8@ 2017)
• 2015 UL 979 BULLETIN-2015 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: OCTOBER 12@ 2015)
• 2013 UL 979 BULLETIN-2013 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: DECEMBER 26@ 2013)
• 2012 UL 979 BULLETIN-2012 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: October 01@ 2012)
• 2009 UL 979 BULLETIN-2009 UL Standard for Safety Water Treatment Appliances (COMMENTS DUE: June 29@ 2009)
• 2005 UL 979 BULLETINS-2005 5/11/2005/(2p)
• 2005 UL 979 BULLETIN-2005 UL Standard for Safety Water Treatment Appliances
• 2005 UL 979-2005 UL Standard for Safety for Water Treatment Appliances First Edition
• 2004 UL 979 BULLETIN-2004 UL Standard for Safety Water Treatment Appliances