1、NSF International Standard / American National StandardNSF/ANSI 58 - 2017 Reverse Osmosis Drinking WaterTreatment Systems NSF/ANSI 58 2017 Reverse osmosis drinking water treatment systems NSF International Standard/ American National Standard NSF International, an independent, not-for-profit, non-go
2、vernmental organization, is dedicated to being the leading global provider of public health and safety-based risk management solutions while serving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may re
3、quest clarifications and interpretations, or propose revisions by contacting: Chair, Drinking Water Treatment Units c/o NSF International 789 North Dixboro Road, P. O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org W
4、eb: http:/www.nsf.orgi NSF/ANSI 58 2017 NSF International Standard/ American National Standard for Drinking Water Treatment Units Reverse osmosis drinking water treatment systems Standard Developer NSF International Designated as an ANSI standard June 13, 2017 American National Standards Institute i
5、i Recommended for adoption by The NSF Joint Committee on Drinking Water Treatment Units The NSF Council of Public Health Consultants Adopted by The NSF Board of Directors November 1986 Revised May 1990 Revised December 2003 Revised November 2016 Revised November 1992 Editorial revision March 2004 Re
6、vised November 2017 Revised January 1996 Revised March 2004 Revised September 1996 Revised June 2005 Revised September 1996 Revised March 2006 Revised September 1997 Revised October 2007 Revised September 1999 Revised August 2009 Revised May 2000 Addendum May 2011 Revised November 2000 Revised Febru
7、ary 2012 Revised January 2001 Revised December 2012 Revised January 2002 Revised December 2013 Addendum June 2002 Revised November 2014 Addendum October 2002 Revised October 2015 Published by NSF International P. O. Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making in
8、quiries with regard to this Standard, please reference the designation “NSF/ANSI 58 2017.” Copyright 2017 NSF International Previous editions 2016, 2015, 2014, 2013, 2012, 2011, 2009, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1997, 1996, 1992, 1990, 1986 Unless otherwise specified, no pa
9、rt of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1NSF, in performing its functions in accorda
10、nce with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. NSF shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shal
11、l not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. NSF Standards provide basic criteria to promote sanitation and protection of the public health. Provisions for mechan
12、ical and electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements. Participation in NSF Standards development activities by regulatory agency representatives (federal, local, state) shall not
13、 constitute their agencys endorsement of NSF or any of its Standards. Preference is given to the use of performance criteria measurable by examination or testing in NSF Standards development when such performance criteria may reasonably be used in lieu of design, materials, or construction criteria.
14、 The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for a specific product or unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall no
15、t be used to justify improper or incomplete design and construction. Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1The informatio
16、n contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Disclaimer may contain material that has not been subjected to public review or a consensus process. In addition, it does n
17、ot contain requirements necessary for conformance to the Standard. This page is intentionally left blank.v Contents 1 General . 1 1.1 Purpose 1 1.2 Scope . 1 1.3 Chemical and mechanical reduction performance claims . 1 1.4 Treatment train . 1 2 Normative references . 1 3 Definitions . 2 4 Materials
18、. 2 4.1 Materials in contact with drinking water . 2 4.2 Membrane preservatives 3 4.3 Temperature resistance . 3 4.4 Materials evaluation . 4 4.5 Gas chromatography/mass spectroscopy (GC/MS) analysis 5 5 Structural performance . 12 5.1 Structural integrity 12 6 Minimum performance requirements 17 6.
19、1 General. 17 6.2 Flow control 17 6.3 Reject water connections . 17 6.4 Storage tank capacity . 18 6.5 Product water dispensing outlets . 18 6.6 Drinking fountain outlets. 18 6.7 Performance indication 18 6.8 Hazards 19 6.9 TDS reduction, recovery rating, and efficiency rating claims . 19 6.10 Alter
20、nate air gap device test method . 25 7 Elective performance claims test methods 28 7.1 Chemical reduction claims . 28 7.2 Mechanical filtration claims 40 7.3 Data transfer protocol (DTP) 45 8 Instructions and information . 48 8.1 Installation, operation, and maintenance instructions 48 8.2 Data plat
21、e . 51 8.3 Performance data sheet . 52 Annex A Key elements of a certification program for drinking water treatment systems and components 58 Annex B Example fact sections for pentavalent arsenic treatment systems 62 Annex C. 64 Annex D Methods and procedures to minimize premature filter plugging 66
22、 Annex E Evaluation methods for systems with multiple technologies - treatment train 68 Interpretations Annex 72 This page is intentionally left blank.vii Foreword2The purpose of this Standard is to establish minimum requirements for materials, design and construction, and performance of point-of-us
23、e reverse osmosis drinking water treatment systems. NSF/ANSI 58 also specifies minimum product literature requirements that manufacturers must provide to authorized representatives and owners. Minimum service related obligations for manufacturers to extend to system owners are also specified in this
24、 Standard. Water contact materials in Drinking Water Treatment Units listed under NSF/ANSI 42, 44, 53, 55, 58, and 62 are tested and evaluated under a separate protocol from NSF/ANSI 61 with criteria that were developed specifically for the intended end-use. NSF/ANSI 61 listing should not be additio
25、nally required for acceptance of these listed units for water contact application. This edition of the Standard contains the following revisions: Issue 74 Sampling procedures for the evaluations of the minimum performance and elective performance claims were revised to ensure consistency among labs.
26、 Issue 78 Normative references were updated. Issue 79 Evaluation criteria columns from tables 4.1, 4.2, and 4.3 were removed and now reference the evaluation criteria in Annex D, Table D.1 in NSF/ANSI 61. Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Cont
27、inuous Maintenance schedule and can be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Drinking Water Treatment Units at standardsnsf.org, or c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2The information conta
28、ined in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain
29、requirements necessary for conformance to the Standard. This page is intentionally left blank. 1 2017 NSF NSF/ANSI 58 2017 NSF/ANSI Standard for Drinking Water Treatment Units Reverse osmosis drinking water treatment systems 1 General 1.1 Purpose The purpose of this Standard is to establish minimum
30、requirements for materials, design and construction, and performance of reverse osmosis drinking water treatment systems. This Standard also specifies the minimum product literature that manufacturers shall supply to authorized representatives and owners, as well as the minimum service-related oblig
31、ations that manufacturers shall extend to system owners. 1.2 Scope The point-of-use reverse osmosis drinking water treatment systems addressed by this Standard are designed to be used for the reduction of specific substances that may be present in drinking water supplies (public or private) consider
32、ed to be microbiologically safe and of known quality (except that claims for the reduction of filterable cysts may be permitted). Systems covered by this Standard are intended for reduction of total dissolved solids (TDS) and other contaminants specified herein. Systems with components or functions
33、covered under other NSF or NSF/ANSI Standards or Criteria shall conform to the applicable requirements therein. 1.3 Chemical and mechanical reduction performance claims 1.3.1 All NSF/ANSI 58 performance claims shall be verified and substantiated by test data generated under the requirements of NSF/A
34、NSI 58. 1.3.2 When performance claims are made for substances not specifically addressed in the scope of this Standard 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 Treatmen
35、t train A system that contains multiple, sequential treatment technologies for a performance claim under this Standard shall meet the applicable requirements as described in Annex E. 2 Normative references The following documents contain provisions that constitute requirements of this Standard. At t
36、he time of publication, the indicated editions were valid. All standards are subject to revision, and parties are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. The most recent published edition of the document shall be used for undat
37、ed references. 2017 NSF NSF/ANSI 58 - 2017 2 21 CFR . Parts 170-199. Food and Drugs3APHA, Standard Methods for the Examination of Water and Wastewater, twentieth edition4NSF/ANSI 53. Drinking water treatment units Health effects NSF/ANSI 61. Drinking water system components Health effects Ontario Mi
38、nistry of the Environment 1977. An Interim Method for Determination of Asbestos Fibre Concentration in Water by Transmission Electron Microscopy5 SAE J726 Air Cleaner Test Code, June 19936USEPA-600/4-84-053. Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, June 19847USEP
39、A600/4B79/020. Methods for the Chemical Analysis of Water and Wastes, March 19837 USEPA600/RB93/100. Methods for the Determination of Inorganic Substances in Environmental Samples, August 19937USEPA600/R94/111. Methods for the Determination of Metals in Environmental Samples, Supplement 1, May 19947
40、USEPA600/490/020. Methods for the Determination of Organic Compounds in Drinking Water, Supplement 1, July 19907 USEPA National Primary Drinking Water Regulations, 40 CFR Part 1418USEPA National Secondary Drinking Water Regulations, 40 CFR Part 14383 Definitions Terms used in this Standard that have
41、 a specific technical meaning are defined in NSF/ANSI 330. 4 Materials 4.1 Materials in contact with drinking water 4.1.1 Acceptance criteria 4.1.1.1 Materials in contact with drinking water shall not impart levels of target compounds or Tentatively Identified Compounds (TICs) that exceed the Total
42、Allowable Concentration (TAC), Maximum Contaminant Levels (MCL), or Maximum Acceptable Concentration (MAC) criteria specified in NSF/ANSI 61 Annex D, 3USFDA CFR Code of Federal Regulations Title 21 . 4American Public Health Association (APHA), 1015 Fifteenth Street, NW, Washington, DC 20005 . 5Ontar
43、io Ministry of the Environment, Toronto, Canada M4V 1P5 . 6Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, PA 15096 . 7U. S. Environmental Protection Agency (USEPA), Environmental Monitoring and Support Laboratory, Cincinnati, OH 45268 . 8Superintendent of Documents, U. S.
44、 Government Printing Office, Washington, DC 20402 . 2017 NSF NSF/ANSI 58 - 2017 3 Table D.1. Any extractable contaminants not listed in the referenced tables shall be reviewed and shall not exceed criteria developed in accordance with NSF/ANSI 61 Annex A. 4.1.1.2 TIC identification and quantitation
45、shall be conducted in accordance with section 4.5.1.2. Additional TIC identification and quantitation should be verified using a standard of the compound in question or an alternate approved analytical method. Additional TIC identification and quantitation is recommended when the contaminant is a he
46、alth risk or when the “Probability Based Matching” process in section 4.5.1.2 is inconclusive. When possible, the product manufacturer should assist and support the testing laboratory in the identification of a standard for the compound and an appropriate analytical method, if applicable, so that co
47、nfirmatory identification and quantification can be performed. If a standard and an adequate alternative analytical method are not available to verify the identification and quantitation of the compound, the TIC shall be evaluated according to section 4.5.1.2. NOTE Manufacturers may not be privy to
48、formulation information, so they may not be able to assist a testing laboratory to identify a standard for the compound that extracted. Refer to Section 4.5.1.2 when the manufacturer does not have material formulation information. 4.1.1.3 Unknown contaminants detected by GC/MS analysis for which ide
49、ntification is unable to be made after performing the steps in 4.5.1 shall be reported in accordance to 4.1.2.2. 4.1.1.4 Whole-system or component assembly extraction testing may be waived if components, when separately tested, meet the requirements of this Standard and are assembled in a manner that does not introduce any new components or materials, increase the surface area-to-volume ratio of previously evaluated components, or present potential concern based on cumulative factors. The reported extractable concentrations for components shall be arithm
