NSF 58-2017

http://www.pdfengineers.org/164047-nsf-58-2017-.html

1 General1.1 PurposeThe purpose of this Standard is to establish minimum requirements for materials, design and construction,and performance of reverse osmosis drinking water treatment systems. This Standard also specifies theminimum product literature that manufacturers shall supply to authorized representatives and owners, aswell as the minimum service-related obligations that manufacturers shall extend to system owners.1.2 ScopeThe point-of-use reverse osmosis drinking water treatment systems addressed by this Standard aredesigned to be used for the reduction of specific substances that may be present in drinking water supplies(public or private) considered to be microbiologically safe and of known quality (except that claims for thereduction of filterable cysts may be permitted). Systems covered by this Standard are intended for reductionof total dissolved solids (TDS) and other contaminants specified herein. Systems with components orfunctions covered under other NSF or NSF/ANSI Standards or Criteria shall conform to the applicablerequirements therein.

1.3 Chemical and mechanical reduction performance claims1.3.1 All NSF/ANSI 58 performance claims shall be verified and substantiated by test data generatedunder the requirements of NSF/ANSI 58.1.3.2 When performance claims are made for substances not specifically addressed in the scope of thisStandard or for those substances not specifically addressed but falling under the scope of NSF/ANSI 58,claims not specifically addressed in the Standard shall be so identified.1.4 Treatment trainA system that contains multiple, sequential treatment technologies for a performance claim under thisStandard shall meet the applicable requirements as described in Annex E.2 Normative referencesThe following documents contain provisions that constitute requirements of this Standard. At the time ofpublication, the indicated editions were valid. All standards are subject to revision, and parties areencouraged to investigate the possibility of applying the most recent editions of the standards indicatedbelow. The most recent published edition of the document shall be used for undated references.