The Importance of NSF 61 Certification for Waterstop
NSF/ANSI Standard 61 was developed to establish minimum requirements for the chemical contaminants and impurities that are indirectly imparted to drinking water from products, components, and materials used in drinking water systems.
Standard 61 is intended to cover specific materials or products that come into contact with drinking water, drinking water treatment chemicals, or both. The focus of Standard 61 is evaluation of contaminants or impurities imparted indirectly to drinking water.
In the U.S., 47 of 50 states have legislation that requires compliance with NSF/ANSI Standard 61. Products that are NSF Certified against NSF/ANSI Standard 61 demonstrate compliance with both Canadian and U.S. Plumbing Codes. NSF Certification and Testing is widely accepted. NSF data is recognized by ASSE, BOCA, IAPMO, ICBO-ES, SBCCI, City of Los Angeles and many others.
Earth Shield® Thermoplastic Vulcanizate Waterstop by J P Specialties, Inc. was the first commercial waterstop to achieve NSF 61 certification, and maintains this certification annually. Therefore, for your drinking water applications there is no more suitable product than Earth Shield® TPV Waterstop. Most commercially available waterstops do not have NSF 61 certification, so the designer should be wary in specifying these non-certified products.