Certification of Water Treatment
(For Private Water and Health Regulated Public Water Supplies)
What Is Certification?
Certification is an approval process that products undergo indicating they
have met the design, material and performance requirements specified by
national standards. Certification includes extensive product testing and
unannounced audits of production facilities.
Certification is performed by non-governmental agencies through tests that
verify that the products meet recognized standards. Once certified, the seal
or mark of approval of the certifying body is placed on the water treatment
The primary non-governmental agencies that have established standards for
water treatment devices are the National Sanitation Foundation (NSF) and
the American National Standards Institute (ANSI). The main agencies
responsible for testing and certifying water treatment devices include
National Sanitation Foundation (NSF International), Water Quality
Association (WQA), Underwriters Laboratories (UL), and Canadian
Standards Association (CSA).
What Does Certification Mean?
Certification by an entity other than the manufacturer indicates a product is
safe, effective and can perform to the specific standard when used for its
designed purpose. Certification only validates the safety and effectiveness
of a product when it is used for the purpose for which it is designed by the
manufacturer. It is recommended that when purchasing a water treatment
device it is certified for the specific purpose for which it will be used. It is
noted that not all certification indicates compliance to a standard related to
What Are The NSF/ANSI Standards For Water Treatment
The following is a list of the NSF/ANSI standards used for the evaluation of
drinking water treatment units, drinking water systems and drinking water
additives. Devices certified to a specific standard may not be capable at
removing all contaminants listed within t