Water Quality Certifications


Watts Premier 4SV Reverse Osmosis System


Water Quality

The Water Quality Association (WQA) is a not-for-profit international trade association representing the residential, commercial and industrial water treatment industry. WQA is a resource and information source, a voice for the industry, an educator for professionals, a laboratory for product testing, and a communicator to the public. WQA maintains a close dialogue with other organizations representing different aspects of the water industry in order to best serve consumers, government officials, and industry members.



The Water Quality Association’s Gold Seal Certification Program is dedicated to providing public health and safety services throughout the USA and globally, while maintaining expert service, superior reputation, and fair pricing. The Gold Seal Program offers certification of all products and chemicals that contact drinking water.



    Standards for Drinking Water Treatment

Standard Description
NSF/ANSI 42 - Drinking Water Treatment Units, Aesthetic Effects is within WQA's ANSI and SCC approved scope of accreditation. Filters are certified to reduce aesthetic impurities such as chlorine and taste/odor. These can be point-of-use (under the sink, water pitcher, etc.) or point-of-entry (whole house) treatment systems.
NSF/ANSI 53 - Drinking Water Treatment Units - Health Effects is within WQA's ANSI and SCC approved scope of accreditation. Filters are certified to reduce a contaminant with a health effect. Health effects are set in this standard as regulated by the U.S. Environmental Protection Agency (EPA) and Health Canada. Both standards 42 and 53 cover adsorption/filtration which is a process that occurs when liquid, gas or dissolved/suspended matter adheres to the surface of, or in the pores of, an adsorbent media. Carbon filters are an example of this type of product.
NSF/ANSI 44 - Residential Cation Exchange Water Softeners is within WQA's ANSI and SCC approved scope of accreditation. Water softeners use a cation exchange resin that is regenerated with sodium or potassium chloride. The softener reduces hardness caused by calcium and magnesium ions and replaces them with sodium or potassium ions.
NSF/ANSI 58 - Reverse Osmosis Drinking Water Treatment Systems* is within WQA's ANSI and SCC approved scope of accreditation. Reverse Osmosis Systems incorporate a process that uses reverse pressure to force water through a semi-permeable membrane. Most reverse osmosis systems incorporate one or more additional filters on either side of the membrane. These systems reduce contaminants that are regulated by Health Canada and EPA.


NSF Logo

NSF is known as The Public Health and Safety Company, NSF International has established an independent reputation as a leader in standards development, product certification, training and education, and risk management. NSF’s main mission is to protect and improve human health on a global scale. To help fulfill this mission, NSF conducts business in over 100 countries and continues to expand to meet the growing needs of clients worldwide.


    The Importance of NSF Certification

    In the last decade, interest in home water treatment products has grown tremendously. Unfortunately, it is not always easy for you to know whether or not a particular product will actually be as safe and effective as a it claims when reducing various contaminant's from your drinking supply. In order to assist you, a set of national public health standards was developed in order to establish minimum requirements for water treatment products.

    Products that meet these strict standards will be certified by NSF International and will bear the NSF Mark. NSF a third party, not-for profit organization, has a long history of developing and running independent product testing and certification programs. NSF is the leading independent tester of home water treatment products on the market today. Their state of-the-art laboratories and highly skilled staff have the knowledge and expertise to effectively evaluate water treatment products, including:

  • • Reverse Osmosis Systems
    • Water Softeners
    • Absorption Filters (i.e. Carbon, Charcoal, Ceramic)
    • Distillation Systems
    • Ultraviolet Disinfection Products


    Additionally, NSF Certification is not a one-time evaluation. All NSF Certified products are required to meet annual re-certification requirements. These requirements include unannounced plant inspections as well as periodic re-testing of all NSF Certified products. This unique requirement ensures that all NSF Certified products continue to meet all stated requirements year after year.

    Only products that bear the NSF Mark meet the strict requirements of the standard. Products stating that they "are made of","meet the requirements of" or "have been tested to" NSF standards have not invested the confidence in their product to have it evaluated by an independent third party certification organization like NSF.

    Premier is committed to quality and customer satisfaction. This is why our products meet these strict standards and proudly carry the NSF Certification Mark.

    For additional information regarding NSF, visit http://www.nsfconsumer.org or call 1-877-8-NSF-HELP (1-877-867-3435).


    Only NSF Makes the Following Statement of Certification!

NSF Certified

• Containment reduction claims are tested to demonstrate proper performance.
• The system is tested to show nothing harmful is added tot he water.
• The system is pressure tested to show it is structurally sound.
• Advertising, literature and labeling are not misleading.


Watts Premier Systems are Certified by WQA to NSF Standards

• Arsenic • Lead • Chormium (Chromium 6)
• Radium • Barium • Cysts (including Cryptospridium, Giardia, Toxoplasma, and Entamoeba)
• Cadmium • Fluoride • Trivalent Chromium
• Copper • Turbidity • Hexavalalent
• TDS • Selenium


**See individual product pages or the Product Guidefor certification details.




NSF/ANSI - This standard establishes a standardized methodology for the determination and verification of product compliance with a maximum weighted average lead content requirement of 0.25 percent as required by the U.S. Safe Drinking Water Act. Currently eight states reported requirements for compliance with NSF/ANSI 372 and two additional states have regulations or legislation requiring certification or conformance to a 0.25 percent weighted average lead content for products conveying or dispensing drinking water.



    **The wetted surface of our Lead Free products contacted by consumable water contains less than 0.25% of lead by weight.