NSF Accepts New Stainless Steel Materials in Drinking Water Systems
February 23, 2006
NSF International announced that NSF/(American National Standards Institute) ANSI Standard 61 - Drinking Water System Components - Health Effects allows additional types of stainless steel as acceptable materials for use in the manufacturing of drinking water equipment.
NSF/ANSI Standard 61 is the American National Standard that ensures pipes, tubes, storage tanks and other products that come in contact with drinking water do not contribute levels of contaminants that could cause serious health problems. Forty-five U.S. states and two Canadian provinces require drinking water system components to comply with NSF/ANSI Standard 61 requirements.
The standard verifies that stainless steels are highly resistant to leaching of contaminates into potable water. Duplex stainless steel grades 2205, 2304, 2101 and 2003 have been incorporated into the standard. These are in addition to types 304, 304L, 316 and 316L, which had previously been accepted.
The modification of the standard was approved by the NSF Joint Committee on Drinking Water Additives and the NSF Council of Public Health Consultants, an independent advisory group of professional and regulatory officials that reviews all NSF standards to ensure they provide public health protection. The additional section can be found in Annex C of NSF/ANSI Standard 61: 2005.
Source: NSF International.