ARCHIVESHISTORIQUES
DELACOMMISSION
COLLECTION RELIEEDES
DOCUMENTS "COM"
COM(78)363
Vol.1978/0137

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COMMISSION OFTHEEUROPEAN COMMUNITIES
COM(78)363final
Brussels,26July1978
Proposalfora
COUNCILDIRECTIVE
onthemethodsofmeasurement andfrequenciesofsamplingand
analysisoftheparametersofthequalityrequiredof
surfacewaterintendedfortheabstractionofdrinking
waterintheMemberStates
(submittedtotheCouncilbytheCommission)
COM(78)363final!

I.REASONS
Introduction
This proposal foradirective isfortheimplementation ofArticle 5(2)of
Council Directive 75/440/EECof16June 1975 concerning thequality required
ofsurface wa|er intended fortheabstraction ofdrinking water intheMember States ,.
Title II,Chapter Aandparagraph 35oftheEuropean Communities' Environ­
ment Programme 1977-1981 states that theCommission will implement those
measures forwhich itisresponsible andwhich areprovided forinthe
directives adopted bytheCouncil .These measures include ,inter alia ,the
submission ofadraft directive onmethods ofmeasurement andthefrequency
ofsampling andanalysis fortheparameters inDirective 75/440/EEC.
II.AIM
Theaimofthis proposal foradirective istofix :
-standard methods ofmeasuring theparameters forcontrolling thequality
ofsurface water intended fortheabstraction ofdrinking water ;
-thefrequency ofsampling andanalysis foreach parameter (inorder to
ensure that quality control inundoubtedly effective ,aminimum regular
sampling frequency hasbeen laid down forsurface waters ,taking into
account thestatistical reliability ofthedata ).
Inview oftheobjectives laid down inArticle 5(2)ofDirective 75/440/
EEC ,several criteria have tobetaken into account when deciding the
frequency ofsampling ,particularly thevolume ofwater abstracted ,the
size ofthepopulation served ,thedegree ofrisk duetothequality of
thewater andseasonal variations inquality .
Thesampling frequency decided oninthis proposal also takes into account
the cost oftaking samples andanalysing them .
III .EXISTING CONDITIONS AND REGULATIONS
Federal Republic ofGermany
Germany hasuniform standards ,laid down bytheAssociation ofGerman
Chemists ,foranalysing water ,effluent andsludge (Deutsche Einheitsver -
fahren zurWasser-Abwasser -undSchlammuntersuchung –standard German
method foranalysing water ,effluent andsludge ).These standards arenot
0JL194of25July 1975
0JC139 of13May 1977

-2-
mantatorybutareusuallyapplied.Theestablishment ofmandatorymethods
ofmeasurement ,samplingfrequencies andmethodsofanalysisistheres­
ponsibility oftheLander.Undertheauthorization issuedtoworksabstract­
inguntreatedwaterforprovidingdrinkingwater,theLSndermayprescribe
methodsofmeasurement andthefrequencyofsamplingandanalysisforthe
parameters.
Belgium
Therearenolawsorregulations imposingstandardmethodsofmeasurement
orsamplingintervals.Thesevarybetweenmeasuringandmonitoringstations.
TheInstituteofHygieneandEpidemiology oftheMinistryforPublic
HealthandtheFamilydoes,however,recommendtheapplication ofcertain
methodsbutthesearenotbinding.
Denmark
TheDanishStandardsCouncilwhichisresponsibletotheMinistryofTrade
recommendstheuseofmethodsofmeasuringandanalysingwaterparameters.
Althoughthesearemerelyindicative,theyareusedthroughoutthecountry
butaremandatoryonlywherespecificdecisionsmakethemso.
Mostofthestandardshavebeenbroughtintolinewiththoseoftheneigh-
gouringScandinavian States-Norway,SwedenandFinland.Thestandards
areregularlyupdatedandadjustedtotechnicalprogress.
France
Article3oftheLawof16December1964,coveringtheregulationandal­
locationofwateraswellasmeasurestocontrolwaterpollution,provides
foranationalsurveyofpollutionofsurfacewaters.Italsostatesthat
thetechnicalspecifications andthephysical,chemical,biologicaland
bacteriological criteriawhichmustbemetbywatercourses,sectionsof
watercourses,canals,lakesandponds,particularly wheretheseareused
toprovidedrinkingwaterforthelocalpopulation,shallbefixedby
decree.
ADecreeof10January1969thereforefixedaprocedureforthesurvey.
Twoorders,of2September.1969and26November1975»setouttheprocedure,
particularly rulessuchastheintervalsatwhichmeasurements aretobe
madeandalistofthevariousmethodsofanalysis,tobeobservedin
samplingandanalysis.
Ireland
Article22ofthe1977Actonlocalauthoritypowerstocombatwaterpollu­
tionstatesthatitisforthelocalauthority,togetherwiththehealth
authorities ,toimplementthewatersurveillance policy.Forthispurpose
thelocalauthorities mustfixrulesforthesampling,measuringand
analysismethodstobeappliedatpointswherewaterisdischargedandto
receivingwaters.

-3-
TheActgivesthelocalauthoritythepowertogatherallrelevantinfor­
mationandprovidesthenecessaryequipmentandapparatus.Measuring
methodsandsamplingintervalsthereforedependonthecounties.
LawN°319of14May1976concerningtheprotectionofwatersagainst
pollutionprovidesforanationalsurveyofthequalityofallwaters,
whethersurfaceorunderground,andtheusetowhichtheyareput,parti­
cularlydrinkingwater.
TheLawstatesthatgeneralcriteriaandmethodsfordeterminingthe
characteristics ofthewatersshallbefixed "bytheState.Adecisionof
theMinistryofPublicWorksdated21February1977thereforefixedthe
samplingintervalsandtheparameterstobemeasuredforeachcategory
ofwater.Thedecisionalsospecifiedmethodsofmeasurement ,referring
inmostcasestothehandbookofthenationalresearchcouncil'sinstitute
ofwaterresearch(IRSA).
Luxembourg
Therearenoregulations imposingmeasuringmethodsorsamplingintervals.
Ingeneralthelaboratories worktoAmericanorGermanstandards.The
intervalsatwhichanalysesaxecarriedoutdependonneed.Waterintended
forprovidingdrinkingwaterisanalysedfairlyfrequentlybutatinter­
valswhichvaryaccordingtolaboratoryandcircumstances .
Netherlands
Standardization wasinitiatedbythenationalwaterinstitutewhich,since
1973,hasbeenpublishingquarterlyreviewsonthequalityofnational
watersintendedfortheuseoflocalcommunities.Measuringmethods,fre­
quencyofsamplingandanalysisfortheparametersarethereforestandard­
izedandregulatedbythevariousnationalinstitutesresponsiblefor
watersurveillance ,includingthenationalinstitutefordrinkingwater
supplies.
UnitedKingdom
ThecommitteeofanalystswhoformtheDepartmentoftheEnvironment's
NationalWaterCouncilhaveissuedaGovernmentpublication ontheanalysis
ofuntreated,drinkingandwastewaterwhichrecommendscertainmethods
ofanalysis.
Thetexthasbeenrevisedtoincludeinformation onaccuracy,precision
andlimitsofdetection.
Theserecommendations arefollowedthroughouttheUnitedKingdomalthough
theyareinnowaymandatory.
O
O0

-4-
TakingintoaccountthelegalsituationinthevariousMemberStatesand
thefactthattheTreatydoesnotprovidethepowersrequiredforthe
purposesconcerned,itwillbenecessarytousebothArticle100and
Article235asalegalbasisforthisproposalforadirective.
BecauseoftheprovisionsoftheseArticles,theOpinionsoftheEuropean
Parliament andtheEconomicandSocialCommitteewillberequired.
IV.REMARKSONTHEFORMULATION OPTHEPROPOSALFORADIRECTIVE
IV.lGeneral
PursuanttoArticle5(2)ofCouncilDirective75/440/EEC,theCommission
convenedaworkingpartyofnationalexpertstoassistitindrawingup
thetechnicalpartofthisproposalforadirective.
Theworkingpartymetfourtimesandprovidedtechnicalinformation onthe
methodsofmeasurement usedintheMemberStatesaswellastheworkdone
byinternational organizations suchastheInternational Standards
Organization (ISO)andtheInternational UnionofPureandApplied
Chemistry(IUPAC).
TheworkingpartyassistedtheCommissioninestablishing thelimitof
detection,theprecisionandtheaccuracyofthemethodsofmeasurement
usedandinfixingthefrequencyofsamplingandanalysisforeach
parameter.
IV.2Scope
Thisproposalforadirectivecoversallsurfacewaterscomingunder
Directive75/440/EEC.
Itconcerns :
-thestandardmeasuringmethods,includingthelimitofdetection,the
precisionandaccuracyfortheGandIvaluesofparametersconsidered
inAnnexIItoDirective75/440/EEC;
-thefrequencyofsamplingandanalysisforeachparameterlistedinthat
Annex.
IV.3Methodsofmeasurement
Directive75/440/EECdividessurfacewatersintothreecategories(A^jAg
andA,)forwhichmandatoryand/orguidevalues,corresponding tothe
differentqualitiesofthewaters,havebeenfixed.
Becausethestandardmethodsareexpensiveandbecauseofthefairly
stringentconstraintsonthedetermination ofIand/orGvaluesof
CategoryA^waters,ithasbeenfoundnecessarytoproposetwomethodsof
measuring forcertainparameters.

-5-
With Category A^andA,waters ,such constraints arenotessential whenthe values to he determined are less strict .
Thestandard measurement methods ,thelimit ofdetection ,precision and
accuracy axegiven inAnnex Itothis proposal foradirective .TheMember
States arefree tochoose other methods ,provided that thelimit of
detection ,precision andaccuracy ofthemethod used conform tothevalues
given inAnnex Itothis proposal foraDirective .
Sampling andmethods ofmeasurement areintended toprovide aresult which
isacorrect estimate ofthe actual average quality ofthe surface water
analysed .Thevarious operations required toobtain this result could
introduce errors which must bedetected sothat they canbeeliminated or
reduced .
Because there isarisk ofsubstantially modifying values during transport
orifsamples axecarried orkept incontainers forafairly long time
(e.g. temperature andpH),Article 3ofthis proposal foradirective sets
outtheconditions tobemetwhen measuring certain parameters .
IV.4.Sampling
Theconditions t'Obemet insampling are set outinArticle 4ofthis
proposal foradirective .
Thegreatest care should betaken insampling surface waters since this
should beregarded asapreliminary stage ofanalysis .
Sampling methods must ensure reproducibility oftheconditions inwhich
themeasurements aremade andshould berepresentative oftheconditions
inthesurrounding environment .Article 4(3)therefore sets outgeneral
rules forsampling .
Oneexception hasbeen made with regard tothesampling ofdissolved or
emulsified hydrocarbons ,these being sampled atthesurface .
IV.5«Conservation andtransport ofsamples
Asindicated inArticle 5»"thetype ofcontainer andpackaging must not
influence theanalysis results .
Samples should besufficiently large forthemeasurements required tobe
made under thebest possible conditions forreproducibility .
Bytheir very nature ,surface waters aresusceptible tofairly rapid
changes resulting from theaction ofthevarious organisms which they
contain .Thepossibility ofchanges occurring between themoment of
sampling andofanalysis should therefore beminimized bycarrying out
analysis asquickly aspossible .

-6-
Many experiments have been made with theaimofrecommending methods of
keeping water samples without altering their composition .However ,itis
impossible tosethard andfast rules which would cover allcases and
situations without exception .
Thesubstances tobemeasured maybestabilized byadding chemicals to
thesample directly after ithasbeen taken or,preferably ,butfirst
putting thechemicals intheempty container .
Preservatives should preferably beintheform offairly concentrated
solutions sothat only small volumes need beused with theresult that in
most cases theresulting dilution canbedisregarded .
Samples required fordetermining parameters aretransported toalaboratory
forthepurpose ofbeing examined there assoon aspossible .Ifimmediate
analysis isnotpossible ,thesamples should bepreserved inconditions
which avoid anycontamination from outside thereceptacles andprevent
anychanges inthe contents .
IV.6.Sampling frecrue ncy
"Sampling frequency "means thenumber ofsurface water samples tobe
taken andanalyses made peryear .Sampling should bedone inaccordance
with Article 5(4)ofDirective 75/440/EEC ,namely atthepoint of
abstraction .
After having consulted national experts ,theCommission proposes that the
frequency ofsampling andanalysing each parameter should befixed every
year bytheMember States inaccordance with Annex IItothis proposal
for adirective .
Thefrequency should take account ofthepopulation served andtheamount
ofwater abstracted .
Where thequality ofsurface water intended fortheproduction ofdrinking
water isconsiderably above that required ,theMember State concerned may
reduce thefrequency ofsampling andanalysis after consulting the
Commission .Member States should therefore forward the results ofthe
survey mentioned below totheCommission andinform itofthesampling
frequencies they propose toadopt .
O O

Proposal foraCouncil Directive onthe
methods ofmeasurement andfrequencies ofsampling andanalysis
oftheparameters ofthequality required of
surface water intended fortheabstraction ofdrinking water inthe
Member States
THECOUNCIL OPTHEEUROPEAN COMMUNITIES ,
HAVING REGARD totheTreaty establishing theEuropean Economic Community ,
andinparticular Articles 100and235thereof ,
HAVING REGARD totheproposal from theCommission ,
HAVING REGARD totheOpinion oftheEuropean Parliament ,
HAVING REGARD totheOpinion oftheEconomic andSocial Committee ,
WHEREAS theprogrammes ofaction oftheEuropean Communities onthe
environment (l)provide forthejoint establishment ,harmonization and
standardization ofmethods ofmeasurement andanalysis ofpollutants for
determining howpollution evolves inthemedium under consideration ;
WHEREAS Article 5(2)ofDirective 75/440/EECof16June 1975 concerning the
quality required ofsurface water intended fortheabstraction ofdrinking
water intheMember States (2)andtheeighth recital thereof refer toa
Directive laying down themethods ofsampling andanalysing theparameters
defining thephysical ,chemical andmicrobiological characteristics of
surface water intended fortheabstraction ofdrinking water ;
WHEREAS anydisparity between theprovisions already applicable orin
preparation inthevarious Member States concerning methods ofmeasure­
ment andthefrequency ofsampling andanalysis foreach parameter todeter­
mine thequality ofsurface waters may create unequal conditions ofcompet­
ition andconsequently directly affect thefunctioning ofthecommon market ;
whereas itistherefore necessary toapproximate thelaws inthis field
under Article 100oftheTreaty t
1)O.J. C.112 of20.12.1973 andC.139 of13.6.1977
2)O.J. L.194 of25.7.1975

-2-
WHEREAS itseems necessary forthis approximation oflaws tobeaccompanied
"byCommunity action designed ,toachieve through more comprehensive legis­
lation oneoftheobjectives oftheCommunity inthesphere ofprotection
oftheenvironment andimprovement ofthequality oflife ;whereas certain
\ 't: '°k' iU''\ • ■*■ • ><** .1 . ' ..») •«
•r-^specif ic.tp.royisions«ito thi^effect should' therefore belaid down ;whereas
*- • I \
Article 235 theTreaty should beinvoked ,asthepowers required for
this purpose have notbeen provided bytheTreaty ;
WHEREAS intheanalyses carried outintheMember States itwill be
necessary toemploy common standard methods todetermine thevalues ofthe
parameters defining thephysical ,chemical andmicrobiological characteris­
tics ofsurface waters intended fortheabstraction ofdrinking water ;
WHEREAS forthepurpose ofensuring therequired quality control itwill
benecessary totake aregular minimum number ofsamples ofsurface water
inorder that theparameters specified inAnnex IIofDirective 75/440/EEC
may bemeasured ;
WHEREAS theminimum frepiency ofsampling andanalysis foreach parameter
should increase with thevolume ofwater abstracted andthepopulation
served ;whereas thefrequency should also increase with thedegree of
risk engendered bythequality ofthewaters ;
WHEREAS technical progress calls forthespeedy adjustment oftherequire­
ments defined inAnnex Itothis Directive and itwill therefore be
necessary ,forthepurpose offacilitating implementation ofthemeasures
required forthis purpose ,tomake provision foraprocedure forclose
cooperation between theMember States andtheCommission meeting inthe
Committee ontheAdaptation oftheDirectives toTechnical Progress
established byCouncil Directive 76/160/EECof8December 1975 concerning
thequality ofbathing water (l),
HAS ADOPTED THIS DIRECTIVE .:
(1)O.J. L.31 of5.2.1976

-3_
Article1
ThisDirectiveconcernsstandardmethodsofmeasurement andfrequencies
ofsamplingandanalysisfortheparameterslistedinAnnexIIto
Directive75/440/EEC.
» ι■
Article2
ForthepurposesofthisDirective:
-"standardmeasuringmethod"meansasuccinctdescription ofthe
procedurefordeterminingthevalueoftheparameterslistedinthe
Annexhereto;
-"limitofdetection"meanstheminimumvalueoftheparameterexamined
whichitispossibletodetect "byanymethod;
-"accuracy"meansthedifferencebetweenthetruevalueofthe
parameterexaminedandtheexperimental valueobtainedbyanymethod;
-"precision"meansthedifference ,withinaseriesofmeasurements made
onasinglesample,betweeneachoftheresultsobtainedandthe
averagevalueofthoseresults;
-"frequencyofsamplingandanalysis"meansthenumberofsurfacewater
samplesandanalysestobetakenormadeeachyearforthepurposeof
determiningthephysical,chemicalandmicrobiological characteristics
ofsurfacewatersintendedfortheabstractionofdrinkingwater.
Article3
1.Thestandardmethodsofmeasurement ,theirlimitsofdetection,preci­
sionandaccuracyaresetoutinAnnexItothisDirective,
2.Analysisofsamplesofsurfacewatertakenforthepurposeofdeter­
miningtheIand/orGvaluesoftheparameterssetoutinDirective
75/440/EECshallbecarriedoutinaccordancewiththevaluesoflimit
ofdetection,precisionandaccuracysetoutinAnnex!•

-4-
3.TheMemberStatesshalltakeallnecessarystepstoensurethat
laboratories usingmethodsofmeasurement otherthanthosesetoutin
AnnexIobserveinrespeotofeachparameterthevaluesoflimitof
detection,precisionandaccuracysetoutinthatAnnex.
4.Thewatertemperature andthepHvalueshallbedeterminedinsituat
thepointofabstractionpriortodespatchforpurification treatment.
Article4
1.Thefrequencies ofsamplingandanalysisforeachparameteraresetout
inAnnexIItothisDirective.
2.AsrequiredbyArticle5(4)ofDirective75/440/EEC,surfacewaters
shallbesampledateachpointofabstraction .
3.Eachsurfacewatersamplefromthepointofabstractionshallbetaken
notlessthan50cmbelowthesurfaceofthewaterandatleast50cm
abovethebottom.Wheretheserequirements cannotbemetthesamples
shallbetakenhalfwaybetweenthesurfaceandthebottom.Sampling
shallavoidanydegradationinenvironmental conditions andbe
representative ofwaterqualityatthepointofsampling.
4.Samplestakenforthepurposeofdeterminingdissolvedoremulsified
hydrocarbons shallbetakenatthesurface.
5.Surfacewatersamplesforthepurposeofdeterminingthephysical,
chemicalormicrobiological characteristics shownintheGcolumnsof
AnnexIItoDirective75/440/EECmaybetakenonthesamedatesas
samplesforthepurposeofdeterminingthevaluesgivenintheI
columnsofthesameannex.

-5-
Article 5
1.Topreserve thequality ofthesample taken ,theMember States shall
make every endeavour toensure that containers .ofthetype described in
Annex Iare used .
2.Laboratories intheMember States using preservatives toconserve
surface water samples shall ensure that they donotmodify thechemical
properties ofthewater orinterfere with theprocess ofanalysis .
3.Samples shall beconveyed from thepoint ofabstraction tothe
analysing laboratory asquickly aspossible ,indarkness and ata
temperature calculated topreserve thechemical ,physical andmicro­
biological characteristics ofthewater .
Article 6
1.Thecompetent authorities oftheMember States shall each year fix
frequencies ofsampling andanalysis foreach parameter ateach point
ofabstraction inaccordance with Annex IItothis Directive .
2.Forthepurposes ofdetermining thevalues oftheparameters given in
theIand/orGcolumns ofAnnex IItoDirective 75/440/EEC,the
frequencies ofsampling andanalysis shall benotless than theminimum
frequencies given inAnnex IItothis Directive .
Article 7
Where asurvey bythecompetent authorities shows that surface waters
intended fortheabstraction ofdrinking water areofconsiderably higher
quality thanthatindicated incolumn A^ofAnnex IItoDirective 75/440/
EEC ,andwhere there isnorisk ofthis quality deteriorating the
Member State concerned may ,after obtaining theconsent oftheCommission ,
reduce thefrequency ofsampling andanalysis .
Forthis purpose theMember States shall send theCommission theresults
ofthesurvey andinform itofthefrequency which they intend
toadopt ;theCommission maymake its consent subject tocertain
conditions ,chiefly asregards theperiod ofvalidity ofthis derogation .
Should thedanger ofadeterioration inthequality ofthewaters
concerned arise theMember States concerned shall take appropriate
measures .

-6-
Article 8
1.Forthepurposes ofapplying this Directive ,theMember States shall
provide theCommission with all relevant information on :
-themethods ofsampling used :
-thelist ofparameters measured with preservatives present .
2.Within a'period notexceeding four years' ,theCommission shall draw up
aconsolidated report based ontheinformation gathered pursuant tothis
Article .
3.TheCommission shall assess theeffectiveness ofthemethods ofsampling
used andthepresence ofpreservatives when parameters aremeasured and ,
ifappropriate ,shall present proposals totheCouncil forimproving
themethods ofmeasuring theparameters listed inAnnex IIto
Directive 75/440/EEC.
Article 9
Amendments required toadapt totechnical progress :
-the standard methods ofmeasurement set out inAnnex Itothis Directive :
and
-thelimit ofdetection ,accuracy andprecision ofthemethods ,
shall bedecided bytheCommittee established under Article 10of
Directive 76/160/EECandinaccordance with theprocedure setoutin
Article 11ofthat Directive .
Article 10
1.Directive 75/440/EECishereby amended asfollows :
(a)Article 5(2)isdeleted ;
(b)in Article 5(3)thewords "referred toinparagraph 2"shall be
replaced bythewords "oftheparameters ofwater quality inquestion ".
2.Paragraph 1shall take effect within twoyears ofthenotification of
this Directive .

-7-
Article 11
TheMember States shall "bring into force thelaws ,regulations and
administrative provisions needed inorder tocomply with this Directive
within twoyears ofitsnotification *They shall forthwith inform the
Commission thereof .
Article 12
This Directive isaddressed tothe Member States .
Done at
The
Por the Council
The President

-8-
ANNEX Z
STANDARDMETHODS07MEASURINGTHEIAND/OR0VALUESOFTHEPARAMETERSIN
COUNCILDIRECTIVE75/440/EEC
(A (B)
PARAMETER(C)•
Liaitof
détection'(D)
Précision
+(E)
Accuracy
+-(F)
StandardMethodsofMeasuring(0)
Typeof
container
tobe
used
1pH pHunit 0.1 0.2-Eleotrometry
Measuredinsituatthetineofsampling
2mg/l
Coloration(after
simplefiltration)Ptaoale10% 20%-Photometric methodusingtheplatinum-
cobaltscale
Priortomeasuring,filterthrougha
glassfibremembraneulass
3Total
Suspendedsolids mg/lSS % 10%-Filteringthrougha0.45yumfiltermembran
orcentrifuging (foratleast5mins.with
meanaccelerationof2800-3200g)
-Dryat105#Candweigh\
Glass

-9-
ΓαΓ (Β) C(D) (E) (F) (0)
4Temperature 0.5#C1°C-Thermometry
Measuredinsituatthetimeofsampling
5Conductivity .us/cm"'k20°C% 10%-Electrometry
Temperature-correctedI
Plastic
or
glass
6Odour(Dilution
factorat
25#c;-Bysuccessivedilutions
Measurement at25°C Glass
7Nitrates mg/lNO. 1 10% 20%-Molecularabsorptionspectrophotometry {
mayornaynothabeteenprecededby
reductionofnitratesintonitrites
–SpécifieelectrodesPlastio
or
glass
8Fluorides mg/lp 0.05 10% 20%–Molecularabsorptionspectrophotometry
afterdistillation
-Spécifieelectrodesplastic

-10-
A) (Β) (C (D (E) (Ρ). (0
9–
Totalextractable
organic mg/lCl
ohlorine
10Dissolvedironmg/1Pe 0.02 10% 20%-Atomicabsolutionspectrometry after
filteringthesamplethrougha0.45/um
filtermembrane '
-Molecularabsorptionspectrometryafter
filteringthesamplethrouga0.45/umfiltermembrane 'Glus
11Manganese mg/lMn0.01(2)
0.02(3)10% 20%-Atomicabsorptionspectrometry
-MolecularabsorptionspectrophotometryGlass
12Copper mg/lCu0.005
0.02(4)10% 20%-Atomicabsorptionspectrometry
-MolecularabsorptionspectrophotometryGlass ■
131
Zinc mg/lZn
I0.02(2)
0.0110% 20%-Atomicabsorptionspectrometry
-MolecularabsorptionspectrophotometryGlass

-11-
(A) (Β C D(E) (Ρ) G)
14Boron mg/lΒ 0.05 10% 20%-Atomloabsorptionspectrometry
-MolecularabsorptionspectrophotometryPlastio
15Béryllium mg/lBe
16Cobalt mg/lCo
17Nickel mg/lNi
18vanadium mg/lV

-12-
l3j ta £2)_ia CF) (0)_
19Arsenic mg/lAs0.002(2)
0.01(5)10% 20%-Atomicabsorptionspectrometry
-MolecularabsorptionspectrophotometryGlass
20Cadmium mg/lCd 0.0002
0,001(5)
/15% 3o%•Atomicabsorptionspectrometry
glass
21Total
chromiummg/lCr0.01m ?0%
«.•Atomioabsorptionspectrometry .
-Molecularabsorptionspectrophotometry
glass
22Lead mg/lPb0,01 15% 30% *Atomicabsorptionspectrometry -
Iglass
23Selenium mg/lSe0.005 15% 30%-Atomioabsorptionspectrometry
glass

-13
Γ77 (B) m :& mi
24Merourtf œfifA 0.0001
0.0002(5)15% 30%-FlamelessatomicabsorptionspectrometryI
»
I
glass
25Barium in^/lBa 0.02 15% 20%-Atomicabsorptionspectrometry
glass
26Cyanide ®g/lCn 0.01 15% 30%*Moleoularabsorptionspectrophotometry
usingaspecificreagent ,afterdistillation
Aplastio
27Sulphates mg/lSO.10 5% 10%-Gravimetrioanalysist EDTAcomplezimetry
glass
28Chlorides mg/1CI 10 5% 10%
I-Titration(Mohr'smethod)
Iglass

-14-
(A) (Β (C) D (E) (?) 0)
20Surfactants mg/1
(reactingwith(Lauryl
methylblue)Sulphate)0.05 20% 20%-MolecularAbsorptionspectrophotometry Glass
30Phosphates mg/l
P2°50.02
' >\10* 20%-Molecularabsorptionspectrophotometry
afterreductionofthephosphomolybdic
complexGlass
31Phenols mg/l
(phenolindex)CgH_0H
paranitraililine
4aainoantipyrine0.0002
0.001(6)15% 50%-Molecularabsorptionspectrophotometry Glass
32Dissolvedorng/l
emulsified
hydrocarbons
(afterextractiontypetroleum
ether)0.01
0.04(3)20% 30%-Gravimetry Glass
33Polycyclicaromatic
hydrocarbons mg/l 0.00004 30% 50%-Measurement offluorescence intheUv
afterthinlayerchromatography
-Comparative measurements inrelationtoa
mixtureofBixcontrolsubstanceswiththe
sajneconcentration (8)Glass

-15-
A) (Β) C) D)(E) (Ρ) (G)
34Totalpesticides mg/l
(parathion,BHC
dieldrin)0.00013056 50%-Gaschromatopography usinganelectron
capturedetector,afterextractionby
suitablesolventsandpurification
–Identification ofthesubstances
Quantitativeanalysis(9)Glass
35Chemicaloxygenmg/l0-
demand(COD)T
5 20% 20%-Potassiumdichromate method Glass
36Dissolvedoxygen4Qsaturationrate*2
1%
saturation%
saturation10#
saturation-Winkler'smethod
-Specificelectrode(electrochemical
method) Glass
37Biochemioal oxygen
demand(BOD^)at20®Cqwithoutnitrification ^2 20% 20%-Determination ofdissolvedoxygenas
in36abovebeforeandafterfive-day
incubationat20°C+1°C,incompletedarkness ~~
-Containercompletelyfilld.withnoairGlass
38Nitrogenby
Kjeldahlmethodmg/lN
(exceptNO,)0.5 10% 20%-Determination oforganicandammoniacal
nitrogenaftermineralization and
distillation followedbymolecular
absorptionspectrophotometry ortitrationGlass

16.
A) (Β) C (D (E) (Ρ) (0)
39Ammonia mg/lHH.0.01(2)
0.05(3)10% 20%-Molecularabsorptionspectrophotometry
usingindophenolblue Olass
i
40Substances /,
extraotable with
chloroform0.02(2)
0,1(7)-Extractionbychloroformpurifiedtoa
neutralpH,Weighresidue Glass
41Totalorganio ccarbon '
42Residualorganio
carbonafter /.
floculation and
membranefiltration
(5/u)TOC

-17-
A) (Β) (C) D)(Β) (Ρ) Ο
43Totalcoliforms 37C
■I100ml5(2)
500(7)35% -Cultureonand/orinanappropriate
specificsolidmedium(suchasTergitol
lactoseagar,endoagar,0,4%Teepol
troth)
withfiltration(2)orwithoutfiltration
(7)andenumerationofcolonies
j
5(2)
500(7)80%orSterilised
glass
-Fermentation inmultipletubes#Sub­
culturingofthepositivetubesona
confirmation medium.Countaccordingto
MPN(mostprobablenumber)
-Incubationtemperature :37°C+1°C
44Faecalcoliforms
/100ml2(2)
200(7)
2(2)
200(7)*35%
80*-Cultureinand/oronanappropriate
specificsolidmedium(suchasTergitollactoseagar,endoagar,0*4^Teepol
broth)
withfiltration(2)orwithoutfiltration
(7)andenumarationofcolonies
or
-Fermentationinmultipletubes#Sub­
culturingofthepositivetubesona
confirmation medium*Countaccordingto
MPN(mostprobablenumber)
-Incubationtemperature 44°C+0.5®CSterilized
glass

-18-
(A (Β) (C)(D)(E) (Ρ) (C)
45Faecal
streptooocoi /100ml.22)200(7)
'2(2)'»
200(7)1%
80-Cultureinand/oronanappropriate
solid,mediumusingsodiumazide,withfiltration(2)orwithoutfiltration(7)
andenumeration ofcolonnies
or
-Fermentation inmultipletubes.
CountaccordingtoMPN(mostprobable
number)Sterilizec
glass
46Salmonella Notpresent
5000ml
Notpresent
1000ml-Concentration bymembrane
filtration.
Innoculation intopre-enrichment medium-
enrichmentandtransferintoisolatine
gelose-identificationSterilizec
glass

-19-
Surfacewatersamplestakenattheabstractionpointareanalysedandmeasuredaftersimplefiltration
(wiremeshsieve)toremoveanyfloatingdebrissuchaswood,plastic,glasscontainers.
2'ForwatersofCategory Gvalue
^ForwatersofCategoriesandA^
4ForwatersofCategory
5ForwatersofCategoriesA1,A2andA3,Ivalue.
^ForwatersofCategoriesA2,IvalueandA3
?ForwatersofCategoriesA2andA3,Gvalue.
Mixtureofsixstandardsubstancesallofthesameconcentrationtobetakenintoconsiderations
fluoranthenej 3»4"benzofluoranthene ;11,12–benzofluoranthenes 3,4~benzopyrene :1.12"benzopervlene :indeno-1,2,3-Cdpyrene. '
9MixtureofthreesubstancesallofthesameconcentrationtobetaJkenintoconsiderationsparathion,EHC,dieldrin.

_20_
ANNEXII
Erequancyofsamplingandanalysisforeachparameterin
CouncilDirective75/440/EEC
Minimumannualfrequency
Populationserved
Noofinhabitants *<100000>100000
Category A1water 1 3
ICategoryA2water 2 6
CategoryA3water 4 12
Volumeofwaterabstracted:20000m/day
(calculationbasis:200l/dayperinhabitant).