2004美国EPA饮用水标准.pdf

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1、2004EditionoftheDrinkingWaterStandardsandHealthAdvisories2004EditionoftheDrinkingWaterStandardsandHealthAdvisoriesEPA822-R-04-005OfficeofWaterU.S.EnvironmentalProtectionAgencyWashington,DCWinter2004Recycled/RecyclablePrintedonpaperthatcontainsatleast50%recycl

2、edfiber.TheDrinkingWaterStandardsandHealthAdvisoriestablesarerevisedperiodicallybyEPA’sOfficeofWateronan“asneeded”basis.ThefollowinginformationshouldbekeptinmindwhenusingtheTables:Referencedose(RfD)valuesareupdatedtoreflectthevaluesintheIntegratedRiskInformat

3、ionSystem(IRIS),andtheDrinkingWaterEquivalentLevel(DWEL)hasbeencalculatedaccordingly.Thus,boththeRfDandDWELintheTablesdifferfromthevaluesintheHealthAdvisorydocumentiftheIRISRfDismorerecentthantheHealthAdvisorydocumentvalue.RfDvaluesfromIRISthatdifferfromtheva

4、luesintheHealthAdvisorydocumentsarepresentedinBOLDtype.ForunregulatedchemicalswithanewIRISRfD,thelifetimeHealthAdvisorywascalculatedfromtheDWELusingtherelativesourcecontributionvaluepublishedintheHealthAdvisory.Forregulatedchemicals,wheretherevisedlifetimeval

5、uedifferedfromtheMaximumContaminantLevelGoal(MCLG),nolifetimevaluewasprovidedintheTable.-4Forregulatedchemicals,thecancergroupdesignationand10cancerriskreflectthestatusatthetimeofregulation.Forunregulatedchemicals,thecancergroupdesignation-4orcancerclassifica

6、tionand10cancerriskreflectthevaluespresentlyonIRIS.New-4IRIScancerdesignationsand10cancerriskvaluesarepresentedinBOLDtype.SeveralpesticideslistedinIRIShavebeenre-evaluatedbytheOfficeofPesticidePrograms(OPP)resultinginanRfDotherthanthatinIRIS.Forthesepesticide

7、s,theIRISvalueislistedintheTable,andthenewerOPPvalueisgiveninafootnote.InsomecasesthereisaHealthAdvisoryvalueforacontaminantbutthereisnoreferencetoaHealthAdvisorydocument.TheseHealthAdvisoryvaluescanbefoundintheDrinkingWaterCriteriaDocumentforthecontaminant.W

8、ithafewexceptions,theHealthAdvisoryvalueshavebeenroundedtoonesignificantfigure.TheDrinkingWaterStandardsandHealthAdvisoriestablesmaybereachedfromtheWaterSciencehomepageathttp://www.epa.go