1、NSF International Standard / American National StandardNSF/ANSI 58 - 2015 Reverse Osmosis Drinking WaterTreatment Systems NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based risk managem
2、ent 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 request clarifications and interpretations, or propose revisions by contacting: Chair, Drinking Water Treatment Units c/o N
3、SF 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 Web: http:/www.nsf.orgi NSF International Standard/ American National Standard for Drinking Water Treatment Units Reverse
4、osmosis drinking water treatment systems Standard Developer NSF International NSF International Designated as an ANSI standard April 26, 2015 American National Standards Institute ii Recommended for adoption by The NSF Joint Committee on Drinking Water Treatment Units The NSF Council of Public Healt
5、h Consultants Adopted by The NSF Board of Directors November 1986 Revised May 1990 Revised December 2003 Revised November 1992 Editorial revision March 2004 Revised January 1996 Revised March 2004 Revised September 1996 Revised June 2005 Revised September 1996 Revised March 2006 Revised September 19
6、97 Revised October 2007 Revised September 1999 Revised August 2009 Revised May 2000 Addendum May 2011 Revised November 2000 Revised February 2012 Revised January 2001 Revised December 2012 Revised January 2002 Revised December 2013 Addendum June 2002 Revised November 2014 Addendum October 2002 Revis
7、ed October 2015 Published by NSF International P. O. Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 58 2015.” Copyright 2015 NSF International Previous editions 2014, 2013, 2012, 201
8、1, 2009, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1997, 1996, 1992, 1990, 1986 Unless otherwise specified, no part 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
9、 from NSF International. Printed in the United States of America. iii Disclaimers1 NSF, in performing its functions in accordance 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 p
10、rofessional judgment. NSF shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shall 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 S
11、tandard. NSF Standards provide basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements
12、. Participation in NSF Standards development activities by regulatory agency representatives (federal, local, state) shall not 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 Stand
13、ards development when such performance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for
14、 a specific product or unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall not 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 annexe
15、s are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1 The information 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, t
16、his Disclaimer may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. iv This page is intentionally left blank.v Contents 1 General 1 1.1 Purpose. 1 1.2 Scope 1 1.3 Chemical an
17、d mechanical reduction performance claims. 1 1.4 Treatment train . 1 2 Normative references . 1 3 Definitions 2 4 Materials 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 spectros
18、copy (GC/MS) analysis . 5 5 Structural performance . 14 5.1 Structural integrity 14 6 Minimum performance requirements . 19 6.1 General . 19 6.2 Flow control 19 6.3 Reject water connections 19 6.4 Storage tank capacity 20 6.5 Product water dispensing outlets 20 6.6 Drinking fountain outlets 20 6.7 P
19、erformance indication 20 6.8 Hazards. 21 6.9 TDS reduction, recovery rating, and efficiency rating claims 21 6.10 Alternate air gap device test method . 27 7 Elective performance claims test methods 29 7.1 Chemical reduction claims 29 7.2 Mechanical filtration claims . 39 7.3 Data transfer protocol
20、(DTP) . 44 8 Instructions and information . 47 8.1 Installation, operation, and maintenance instructions . 47 8.2 Data plate . 50 8.3 Performance data sheet 51 Annex A . A1 Annex B . B1 Annex C . C1 Annex D . D1 Annex E . E1 Interpretations Annex 1 vi This page is intentionally left blank.vii Forewo
21、rd2 The purpose of this Standard is to establish minimum requirements for materials, design and construction, and performance of point-of-use reverse osmosis drinking water treatment systems. NSF/ANSI 58 also specifies minimum product literature requirements that manufacturers must provide to author
22、ized representatives and owners. Minimum service related obligations for manufacturers to extend to system owners are also specified in this 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
23、protocol from NSF/ANSI 61 with criteria that were developed specifically for the intended end-use. NSF/ANSI 61 listing should not be additionally required for acceptance of these listed units for water contact application. Issue 68 This revision added clarification regarding the maximum number of sa
24、mples exposed in the Materials evaluation under Section 4. Issue 69 This revision added the option for a higher influent challenge concentration for nitrate. Issue 70 This revision added criteria for utilizing a treatment train approach for the evaluation of a system containing multiple, sequential
25、treatment technologies. Issue 71 This revision replaced the term “warning device” with “performance indication device” to harmonize NSF/ANSI 53 and 58 and add a reference to NSF/ANSI 53 for the performance indication device requirements for VOC reduction claims based on the performance of an activat
26、ed carbon postfilter. Issue 73 This revision clarified the sampling requirements for the cyst reduction tests under NSF/ANSI 53 and 58. Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous Maintenance schedule and can be opened for comment at any time
27、. 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. 2 The information contained in this Foreword is not part of this American National Standard
28、 (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 requirements necessary for conformance to the Standard. viii This pa
29、ge is intentionally left blank. 1 2015 NSF NSF/ANSI 58 2015 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 requirements for materials, design and construction, and perfor
30、mance 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 obligations that manufacturers shall extend to system owners. 1.2 Sc
31、ope 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) considered to be microbiologically safe and of known quality (except th
32、at 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 covered under other NSF or NSF/ANSI Standards or Criteria shall
33、 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/ANSI 58. 1.3.2 When performance claims are made for substances n
34、ot 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 Treatment train A system that contains multiple, sequential treatment t
35、echnologies 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 the time of publication, the indicated editions were valid. All
36、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 undated references. 2015 NSF NSF/ANSI 58 - 2015 2 APHA, Standard Met
37、hods for the Examination of Water and Wastewater, twentieth edition3 NSF/ANSI 53. Drinking water treatment units Health effects NSF/ANSI 61. Drinking water system components Health effects Ontario Ministry of the Environment 1977. An Interim Method for Determination of Asbestos Fibre Concentration i
38、n Water by Transmission Electron Microscopy4 SAE J726 Air Cleaner Test Code, June 19935 USEPA-600/4-84-053. Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, June 19846 USEPA600/4B79/020. Methods for the Chemical Analysis of Water and Wastes, March 19836 USEPA600/RB93/100
39、. Methods for the Determination of Inorganic Substances in Environmental Samples, August 19936 USEPA600/R94/111. Methods for the Determination of Metals in Environmental Samples, Supplement 1, May 19946 USEPA600/490/020. Methods for the Determination of Organic Compounds in Drinking Water, Supplemen
40、t 1, July 19906 USEPA National Primary Drinking Water Regulations, 40 CFR Part 1417 USEPA National Secondary Drinking Water Regulations, 40 CFR Part 1437 USFDA Code of Federal Regulations, Title 21, (Food and drugs) Direct Food Additive Substances parts 170 through 199, April 1, 19927 3 Definitions
41、Terms used in this Standard that have 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 Co
42、mpounds (TICs) that exceed the Total Allowable Concentration (TAC), Maximum Contaminant 3 American Public Health Association (APHA), 1015 Fifteenth Street, NW, Washington, DC 20005 . 4 Ontario Ministry of the Environment, Toronto, Canada M4V 1P5 . 5 Society of Automotive Engineers (SAE), 400 Commonw
43、ealth Drive, Warrendale, PA 15096 . 6 U. S. Environmental Protection Agency (USEPA), Environmental Monitoring and Support Laboratory, Cincinnati, OH 45268 . 7 Superintendent of Documents, U. S. Government Printing Office, Washington, DC 20402 . 2015 NSF NSF/ANSI 58 - 2015 3 Levels (MCL), or Maximum
44、Acceptable Concentration (MAC) criteria specified in tables 1, 2 and 3 or specified in NSF/ANSI 61 Annex D and E. 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 identificat
45、ion and quantitation 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 th
46、e contaminant is a health 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 a
47、pplicable, so that confirmatory 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
48、 may not be privy to 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 a
49、nalysis for which identification 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 component
