Making the Sale Using Certification to American National Standards   Water Quality Products March 2002   By Tom Bruursema, NSF
Dealers of drinking water treatment systems today enjoy a growing market of opportunity. However, accompanying this growth is increasing competition, a tightening economy and a far more informed consumer. All of these require dealers to find better ways to differentiate their products and services.

WQA Announces an Alternative Program for Product Certifications to the ANSI/NSF Standards for Drinking Water Treatment Units   Water Quality Products August 1997   by Joseph Harrison
Following requests from industry members to provide an alternative option for product certifications, the Water Quality Association (WQA) has entered into an agreement for this purpose with Underwriters Laboratories, Inc. (UL) of Northbrook, Illinois.