Guidelines for Drinking-water Quality 2011.pdf

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1、GuidelinesforDrinking-waterQualityFOURTHEDITIONWHOLibraryCataloguing-in-PublicationDataGuidelinesfordrinking-waterquality-4thed.1.Potablewater-standards.2.Water-standards.3.Waterquality-standards.4.Guidelines.I.WorldHealthOrganization.ISBN9789241548151(NLMclassification:WA675)©WorldHealthOrg

2、anization2011Allrightsreserved.PublicationsoftheWorldHealthOrganizationareavailableontheWHOwebsite(http://www.who.int)orcanbepurchasedfromWHOPress,WorldHealthOrganization,20AvenueAppia,1211Geneva27,Switzerland(tel.:+41227913264;fax:+41227914857;e-mail:bookorders@who.int).Requestsforpermissio

3、ntoreproduceortranslateWHOpublications–whetherforsaleorfornon-commercialdistribution–shouldbeaddressedtoWHOPressthroughtheWHOwebsite(http://www.who.int/about/licensing/copyright_form/en/index.html).Thedesignationsemployedandthepresentationofthematerialinthispublicationdonotimplytheexpression

4、ofanyopinionwhatsoeveronthepartoftheWorldHealthOrganizationconcerningthelegalstatusofanycountry,territory,cityorareaorofitsauthorities,orconcerningthedelimitationofitsfrontiersorboundaries.Dottedlinesonmapsrepresentapproximateborderlinesforwhichtheremaynotyetbefullagreement.Thementionofspeci

5、ficcompaniesorofcertainmanufacturers’productsdoesnotimplythattheyareendorsedorrecommendedbytheWorldHealthOrganizationinpreferencetoothersofasimilarnaturethatarenotmentioned.Errorsandomissionsexcepted,thenamesofproprietaryproductsaredistinguishedbyinitialcapitalletters.Allreasonableprecaution

6、shavebeentakenbytheWorldHealthOrganizationtoverifytheinformationcontainedinthispublication.However,thepublishedmaterialisbeingdistributedwithoutwarrantyofanykind,eitherexpressedorimplied.Theresponsibilityfortheinterpretationanduseofthemateriallieswiththereader.InnoeventshalltheWorldHealthOrg

7、anizationbeliablefordamagesarisingfromitsuse.CoverdesignedbyWHOGraphics,SwitzerlandTypesetbyValueChain,IndiaPrintedinMaltabyGutenbergContentsPrefacexvAcknowledgementsxviiAcronymsandabbreviationsusedintextxx1.Introduction11.1Generalconsiderationsand