1、NSF International Standard / American National StandardNSF/ANSI 62 - 2015Drinking Water Distillation SystemsNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global supplier of public health and safety-based risk management services s
2、erving 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, Joint Committee on Drinking Water Treatment Units c/o NSF
3、 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.org NSF/ANSI 62 2015 i NSF International Standard/ American National Standard for Drinking Water Treatmen
4、t Units Drinking water distillation systems Standard Developer NSF International NSF International Board of Directors Designated as an ANSI Standard April 26, 2015 Designated as an American National Standard ii Prepared by The NSF Joint Committee on Drinking Water Treatment Units Recommended for Ado
5、ption by The NSF Council of Public Health Consultants Adopted by The NSF Board of Directors May 1989 Revised November 1992 Revised September 1997 Revised September 1999 Addendum, June 2002 Revised February 2004 Revised October 2007 Revised August 2009 Revised February 2012 Revised December 2013 Revi
6、sed January 2015 Revised 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 refer to the designation “NSF/ANSI 62 2015.” Copyright 2015 NSF International Previous edition 2
7、014, 2013, 2012, 2009, 2007, 2004, 1999, 1997, 1992, 1989 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 from NSF International. Printed i
8、n 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 professional judgment. NSF shall no
9、t 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 Standard. NSF Standards provide bas
10、ic 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. Participation in NSF Standards d
11、evelopment 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 Standards development when such perform
12、ance 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 a specific product or unit, nor d
13、o 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 annexes are provided as general guidelin
14、es 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, this Disclaimer may contain materia
15、l that has not been subjected to public review of 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 Scope . 1 1.2 Minimum requirements 1 1.3 Chemical and microbiological
16、 reduction performance claims . 1 1.4 Treatment train 1 1.5 Reviews and revisions. 1 2 Normative references 2 3 Definitions . 2 4 Materials . 2 4.1 Materials in contact with drinking water . 2 4.2 Materials evaluation 3 4.3 Gas chromatography/mass spectroscopy (GC/MS) analysis 5 5 Structural perform
17、ance 14 5.1 Structural integrity . 14 6 Minimum performance requirements 19 6.1 Total dissolved solids (TDS) reduction. 19 6.2 Performance indication 23 6.3 Flow control 27 6.4 Storage tanks 27 6.5 Evaporator chamber 27 6.6 Openings and rims (product water zone) . 27 6.7 Entry ports 27 6.8 Waste con
18、nections 28 6.9 Product water dispensing outlets . 28 6.10 Active agents and additives . 28 7 Elective performance claims test methods 29 7.1 Inorganic chemical reduction claims qualified by TDS surrogate testing . 29 7.2 Inorganic chemical reduction . 29 7.3 In-place sanitization of the product wat
19、er zone 33 7.4 Microbiological reduction . 35 8 Instruction and information . 39 8.1 Installation, operation, and maintenance instructions . 39 8.2 Data plate . 40 8.3 Replacement components . 41 8.4 Performance data sheet 41 Annex A . A1 Annex B . B1 Annex C . C1 Annex D . D1 vi This page is intent
20、ionally left blank.vii Foreword2 The purpose of this Standard is to establish minimum requirements for the materials, design and construction, and performance of point-of-use and point-of-entry drinking water distillation systems that are designed to reduce specific chemical and microbiological cont
21、aminants in public or private water supplies. NSF/ANSI 62 also specifies minimum product literature requirements that manufacturers must provide to authorized representatives and consumers. Water contact materials in drinking water treatment units listed under NSF/ANSI 42, 44, 53, 55, 58, and 62 are
22、 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 additionally required for acceptance of these listed units for water contact application. This edition of the Standard contains
23、 the following revisions: Issue 26 This revision added clarification regarding the maximum number of samples exposed in the Materials evaluation under section 4. Issue 27 This revision added criteria for utilizing a treatment train approach for the evaluation of a system containing multiple, sequent
24、ial treatment technologies. 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. Comments should be sent to Chair, Joint Committee on Drinking Water Treatment Units at standardsnsf.org, c
25、/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 (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Foreword ma
26、y contain material that has not been subjected to public review of a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. viii This page is intentionally left blank. 1 2015 NSF NSF/ANSI 62 2015 NSF/ANSI Standard for Drinking Water Treatment Unit
27、s Drinking water distillation systems 1 General 1.1 Scope This standard establishes minimum materials, design and construction, and performance requirements for point-of-use and point-of-entry drinking water distillation systems and the components used in these systems. Distillation systems covered
28、by this standard are designed to reduce specific chemical contaminants from potable drinking water supplies. Systems covered under this standard may also be designed to reduce microbiological contaminants, including bacteria, viruses, and cysts, from potable drinking water supplies. It is recognized
29、 that a system may be effective in controlling one or more of these contaminants, but systems are not required to control all. Systems covered by this standard are not intended for the treatment of water that is visually contaminated (turbid) or has an obvious contamination source, such as raw sewag
30、e, nor are systems covered by this standard intended to convert wastewater to microbiologically potable water. 1.2 Minimum requirements A system as defined in this standard shall meet the applicable requirements of Sections 4, 5, 6, and 8. A component as defined in this standard shall meet the requi
31、rements of 4 and 8. If the component is pressure bearing, it shall also meet the applicable requirements of 5. 1.3 Chemical and microbiological reduction performance claims 1.3.1 All NSF/ANSI 62 performance claims shall be verified and substantiated by test data generated under the requirements of N
32、SF/ANSI 62. 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 62, those claims not specifically addressed in the Standard shall be so identified. 1.
33、4 Treatment 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 D. 1.5 Reviews and revisions This Standard shall be reviewed at least every five years. The review is to be co
34、nducted by the NSF Joint Committee on Drinking Water Treatment Units. 2015 NSF NSF/ANSI 62 2015 2 2 Normative references The following documents contain requirements which, by reference in this text, constitute requirements of this standard. At the time of publication, the indicated editions were va
35、lid. All standards are subject to revision and parties are encouraged to investigate the possibility of applying the recent editions of the standards indicated below. The most recent published edition of the document shall be used for undated references. NSF/ANSI 61 Drinking water system components
36、Health effects APHA, Standard Methods for the Examination of Water and Wastewater, twentieth edition, 19983 USEPA600/4-79-020, Methods for the Chemical Analysis of Water and Wastes, March 19834 USEPA-600-4-84-053, Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, June 198
37、44 USEPA600/4-88/039, Methods for the Determination of Organic Compounds in Drinking Water, December 19884 USEPA-600/4-90/020, Methods for the Determination of Organic Compounds in Drinking Water -Supplement 1, July 19904 USEPA600/4-91/010, Methods for the Determination of Metals in Environmental Sa
38、mples, June 19914 USEPA National Primary Drinking Water Regulations, 40 CFR Part 1415US EPA National Secondary Drinking Water Regulations, 40 CFR Part 1434 USEPA National Secondary Drinking Water Regulations, 56 CFR Part 35734 US FDA Code of Federal Regulations, Title 21, (Food and Drugs) Direct Foo
39、d Additive Substances Parts 170 through 199, April 1, 19926 3 Definitions 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 POE drinking water treatment units shall conform to the protocol an
40、d criteria in NSF/ANSI 61. 4.1.2 POU drinking water treatment units shall conform to the protocol and criteria in this section. 3 American Public Health Association (APHA), 1015 Fifteenth Street, NW, Washington, DC 20005 . 4 US Environmental Protection Agency (USEPA), Environmental Monitoring and Su
41、pport Laboratory, Cincinnati, OH 45268 . 5 Superintendent of Documents, US Government Printing Office, Washington, DC 20402 . 6 US Food and Drug Administration (US FDA), 5600 Fishers Lane, Rockville, MD 20857 . 2015 NSF NSF/ANSI 62 2015 3 4.1.3 Acceptance criteria 4.1.3.1 Materials in contact with d
42、rinking water shall not impart levels of target compounds or Tentatively Identified Compounds (TICs) that exceed the Total Allowable Concentration (TAC), Maximum Contaminant Levels (MCL), or Maximum Acceptable Concentration (MAC) criteria specified in tables 1, 2 and 3 or specified in NSF/ANSI 61 An
43、nex 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. 4.1.3.2 TIC identification and quantitation shall be conducted in accordance with section 4.3.1.2. Additional TIC identifica
44、tion 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 health risk or when the “Probability Based Matching” process in section 4.3.1.2 is
45、 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 confirmatory identification and quantification can be performed. If a standard and
46、 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 4.3.1.2. NOTE Manufacturers may not be privy to formulation information, so they may not be able to assist a testing laboratory
47、to identify a standard for the compound that extracted. Refer to Section 4.3.1.2 when the manufacturer does not have material formulation information. 4.1.3.3 Unknown contaminants detected by GC/MS analysis for which identification is unable to be made after performing the steps in 4.3.1 shall be re
48、ported in accordance to 4.1.4.2. 4.1.3.4 The concentration of active agents or additives used in the drinking water treatment process shall be evaluated in the product water as specified in 6.11. The concentration of active agents or additives used in the drinking water treatment process shall not b
49、e evaluated during extraction testing. 4.1.3.5 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 arithmetically added to ensure that the whole-system or component assembly meets
