How was NSF/ANSI Standard 61 developed? How is it maintained?
NSF/ANSI Standard 61 is overseen by the NSF Drinking Water Additives Joint Committee. This committee has a balance of 1/3 public health regulatory members, 1/3 product manufacturer members, and 1/3 product user representatives. Any proposal to revise the standard is typically assigned to a task group composed of joint committee members and external experts. Task group members are assigned by the chairman of the joint committee.One standing group is the Health Advisory Board. This group consists of toxicologists from USEPA, Health Canada, state and provincial agencies, as well as toxicologists from industry, and private consulting firms. This group is responsible for reviewing and approving all allowable contaminant concentrations that are published in NSF/ANSI Standard 61.Any revision that is proposed by a task group must receive majority approval from the joint committee.
