ARCHIVES HISTORIQUES
DELACOMMISSION
COLLECTION RELIEEDES
DOCUMENTS "COM"
COM(76)401
Vol.1976/0121

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COMMISSION OFTHEEUROPEAN COMMUNITIES
COM(76)401 final.
Brussels .26July1976*
PROPOSAL FORACOUNCIL DIRECTIVE ONTHEQUALITY REQUIREMENTS FOR
WATERS CAPABLE OFSUPPORTING FRESHWATER FISH
(submittedtotheCouncil "bytheCommission )
COM(76)401final.

ΕΠν/378/75-Ε
ExPLAJTATORY MEMORANDUM
1«Introduction
Degradation inthequalityofwaterduetothedischarge ofpollutants
hasadverseeffectsoncertainfishpopulations ,particularly there­
ductionintheoverallnumberofcertainspeoiesorevencinsome
cases,thedisappearance ofsomeofthesespeoies.
Inordertoprotectfishinginterests andensurethatfreshw^ieris
protected againstpollution ,theEuropeanCommunities *actionprogramme
ontheenvironment !stipulates thatCommunity measuresmustprovi.defor
thedefinition ofqualityobjectives forwatersandinparticular the
establishment ofanumbarofreference parameters andlimitvaluesin
respectofthevarioususesandfunctions ofwater,withepeoialrefe­
rencetowatersoapableofsupporting freshwater fish.
/
2*Aimpursued
Thequalityobjectives contained inthisDirective aimatallowing
fishbelonging toindigenous speoianpresenting anaturaldiversity
orfishbelonging tospeoieswhosepresenoeisconsidered desirable
forwatermanagement toliveinfavourable conditions „Whenlaying
downparameters andnumerical valuesfordetermining waterquality
asmuchattention aspossible hasbeenpaidtotheeffectsofeach
parameter notonlyforthesurvivaloffishatdifferent stagesin
theirlifecyclebutalsofortheirgrowth,reproduction andperform
manoeandforothercomponents oftheaquaticecosystem whichmay
provide themwithshelterorfood#
Thesequalityobjeotifves arenotincompatible withthewaterquality
requirements forcommercial orrecreational fishings
Toallowfordifferences inthefishsensitivity toharmfulsusbstanoes ,
thewaterscapableofsupporting them,havebeendividedintotwoca­
tegories namelysalmonidwatersandoyprinid waters®
Forthepurposes ofthisproposal
-Salmonidwatersarewaterswhichsupportorareoapableofsupporting
fishbelonging tospeoiessuchassAaonytroutfgrayling,ooregonidae
•"Cyprinidwatersarewaterswhiohsupportorarecapableofsupporting
thecyprinidae orotherspeoieswhiahnormallysharethesa&ehabitat
asthslatter,suohaepike,percharideels*'
OJN°C112of20December 1973

2 ENV/378/75-E
ThispropoaalforaDirective considers onlythoseproblemsconcerning
thequalityrequirements forwatersintendedtosupportthelifeof
freshwater fish®Itdoesnotrelatetohealthorconsumerprotection
whichiscoveredbyotherCommunity ornational provisions «
3aExisting conditions andLegislation
Areviewofthelegalsituation intheMemberStateshasshownthat
national lawsmakenomentionofcriteriadefining thequalityrequi­
rementsforwaterscapableofsupporting fishandreferonlytostandards
fordischarges intopublicwatercourses ,,
InBelgiumaRoyalDecreepursuant tothelawof1971ontheprotection
ofsurfacewatersasregardseffluents specifies inparticular that
inlandfisheries mustbeprotected# Theprovisions inquestionrelate
particularly totemperature ,pHvalue,oxygen,hydrocarbons anddetergents 0
InDenmarkaspecialenvironmental protection lew(if0372of13Jun91973)
statesthatauthorization foranydischarge mustbeobtained fromthe
authority responsible .
Frenchlegislation includes anumberofprovisions affording' various
formsofprotection asregardstheuseofwater0Themostimportant are
-theFisheries Actsof1829and1949(Codenml)-andtheActof16December 19^4(implementation ofacomprehensive
watermanagement policy).
Thelatteractprovidesfortheestablishment ofqualityobjectives for
varioustypesofwater,including fishingwaters® Uptonowquality
objectives havenotbeoidefined forfishingwaters.
IntheUnitedKingdomthereareincertaincaseslawsrelatingspecifically
tothecontrolofpollution whenthisaffeotsfishing® InEngland and
Walesthe1975SalmonandFreshwater Fisheries Actprohibits thedischarge
ofsubstances harmfultofishing®Different typesofauthorities admi­
nisterfishinginEnglandandWales,Scotland andNorthern "reland.
Despitedifferences intheprovisions andinthemethodsofpollution
control,theselawsarelargelysimilarineffect#
InItalythestandardslaiddownundertheFisheries A't(HD8October1931
N°1604amendedbytheDPRof10June1955n®9$7a**'departmental
orderoftheMinistryofAgriculture and.Forestryof7.5February 1956)
aredesigned toensurethataquaticfaunaarefullysafeguarded and
proteoted ,inparticular ,fromrisksarisingoutofthedischarge of
industrial effluents .
InIrelandthedischarge intothewaterofanysubstaiioe likelytoprove
harmfulortoxictofishlifeisprohibited undel*theFisheries (Conso­
lidation)Act1959,Sections 171and172amendedby..theFisheries
(Amendment )Aot1962* !•' n:.!:L•„ ... ■.
; -ni -7

3 ENV/373/75-E
»V · ·
InLuxembourg theFisheries Actof21March 1947 totally prohibits the
discharge into waterways ofanysubstanoes andresidues likely toprove
harmful tofish life ortodestroy theaquatio flora orfauna .Another
Actof16May1929 prohibits thedischarge ofanysubstance likely to
prove harmful ,among other things ,towater used foranimal-feeding
purposes ,forfish-farming orfortheconservation ofedible fish or
crustaceans# ,
IntheNetherlands the "WetVerontreiniging Opperviaktcwateren "(Surface
Waters Pollution Act)of19^9 establishes asystem ofconcessions forthe
qualitative protection ofwater .Specific laws govern thedischarge of
various substanoes ,e.g. ,"Hinderwet "(Nuisances Act)(1952 ), "-Qntgrondinge -
wet"(Excavation Act)(19^5 )»"Bestri jdingsmiddelenwet "(Pesticides Act)
(1962),"WetGevaa-rlijke Stoffen "(Dangerous Substances Act)(1965 )j
"Wetopdelijkbezorging "(Dieposal ofCorpseS Act)(1896)#
IntheFederal Republic ofGermany thelatest version ,dated 2Maroh 1974 ,
ofaspecial Bill oonoerning themanagement ofnational water resources
(Water Resources Aot)lays down minimum water quality requirements and
lists thespeoifio substanoes which must notbedischarged into thewater ,
andthose which adversely affeot water quality# The1957 Water Resouroes
Lawprohibits theunauthorized disoharge ofpollutants#
Inview ofthelegal situation intheMember States andthefaot that the
Treaty hasnotprovided allthepowers necessary foraohieving these
objectives ,Artioles 100and235must beinvoked asalegal basis for
theproposal foraDirective#
Under theprovisions ofthese Artioles theopinion oftheEuropean
Parliament andtheEconomic andSocial Committee must besought#
Comments ontheproposal foraDirective
»
4*1•General comment s-
Pursuant totheEuropean Communities' Environment Programme ,the
. .Commission setupaWorking Part;,' ofnational experts toassist
with thepreparation oftheDirective# Insixmeetings ,this Working
Party hassupplied thenecessary .information onthelegal situation
intheMember States andhas :helped theCommission defined the
properties ofthewaters inquestion 0During itswork ,theWorking
Party consulted theteohnical documents published bytheEuropean
Inland Fisheries Advisory Commission (FAO)and :,hetechr^.cal reports
■from national laboratories Saiit totheCommission bytinvarious
delegations#
These reports andtheresults oftheconsrlt&t with theejeperts
areoontained inworking document ENV/330/75o
Data onmany pollutants isstill lacking evrasearch must be
conducted inthis field todetermine th?r*v£er quality requirements
forthese pollutants#

4 ENV/378/75-E
4®2®Soope
TheproposalforaDirectiverelatestoallstandingorrunning
freshwater whiohhasoristobedesignated byadeoislon ofthe
competent authorities intheMemberStatesasrequiring protection
toenablefishtoliveinfavourable conditions .
TheDirective doesnotapplytothewatersofnaturalorartificial
pondswherefishareintensively farmedforcommercial purposes®
4o3«Parameters andtheirnumerical values
Although theparameters listedintheAnnextothisproposal havebeen
considered inisolation ,theinteraction oftheireffeotawithother
waterqualitycharacteristics hassometimes beenpointedoutend
quantified ^
However,thisinteraction withfactorsaspH,temperature andwater
hardness doesnottakeaccountofothersynergioeffectsduetothe
simultaneous presence ofvariousharmfulsubstances .
Inthiscase,theparametie valuesmaybesubstantially modified in
.comparison withthevalueslistedintheproposalforaDirective 0
Certainharmfulsubstances mayhavesublethal effects,evenat
levelssubstantially lowertothoseknowntobedirectly harmful *
Thecompetent authorities willhaveto-takeaccountofthisand
laydownepeoifio provisions intheseparticular oasee^
Thomixingof'Harmfulsubstances hasbeentakenintoconsideration ,
'•albeitonly'roughly $Themethodofcalculation which'considers thatthe
tcxicity ofamixtureofharmfulsubstances equalsthesumofthe
toxicitylevelsofthevarioussubstances hasbeenadopteda
Theradioactivity parameters havenotbeenIncluded inthelistgiven
intheproposalforaDirective ,,TheymustConformtotheprovisions
theMemberStateshaveadoptedpursuant tothebasicstandards ofthe
EuratomTreaty. . 1,
Thelistofparameters contained intheAnnexcannotbeconsidered as
ehaustive.Thedataavailable oncertainpollutants istooincomplete to
enablenumerical levelstobeproposed eTheabsenceofcertainparameters
fromthelistdoes ;nottherefore meanthattheydonothaveaharmful
effectonfish*
Asalreadypointedout,thevaluescontained inthelirtothis
proposal applyonlyinthoseoaseswherethelevels .ex*otherenviron­
mentalfactorsarefavourable whichimpliesinparticular thatthe
concentrations ofharmful substances arenilorve:?low®Forall
thesereasonstheprovisions referred toinArticle 8aboutthe
non-degradation ofgood-quality watersmustbeays.liedwiththe
utmoststringency andwithout anyexceptions o
ThemeaningofthelettersusedintheAnnextothisproposal isas
follows s
I*Thevaluescorrespond togoodlivingconditions forfish«Where
aparametric valueisgivenincolumnI,thatvalueisbinding® The
MemberStatesmaynotfixalossstringent value#Theymayhoweverlaydown
morestringent values®
G«Thevaluescorrespond tolivingoonditiona whiohareinhartaoifsy
withthebiogeographioal features oftheenvironment .

5 ENV/378/75-E
■meparametrio valuesgivenincolumn0areintendedsolelyas »
information andmustbeconsidered asguidelines ,,Whereavalue
appearsinbothcolumnIandcolumn GtheMemberStateshavethe
optionoflayingdownmorestringent valuesbasedonthe0value.•
IftheMemberStatesadopttheseguidelines theybecomebindingin
thecountries wheretheyhavebeenadopted#
0•Inthecaseofparametric valuesdesignated bytheA©tter0,^ain
derogations arepossible onthegroundsofabnormalmeteorological
conditions andspecialnaturalconditions .
Watersoapableofsupporting freshwater fishshallbatakenascomplying
withtheparametric valueslaid'down'intheAnnex(withthaexoeption
ofthevalueslaiddownfordissolved oxygen,pHandtemparature )where
theymeetthefollowing conditions s
«•>intheoaseoftheparameters givenincolumnI,whanthevaluesgiven
by95/oof"thesamplesanalysedarelessthanorequal.tothevalues
showninthisoolumn }
-intheoaseoftheparameters giveninoolumn0,whenthevaluesfrom
90fjoftheSamplesanalysedarelessthanorequal$0thevalueshown
inthiscolumn# :,
Forthe5or10%ofsampleswhich,accordingtothe.circumstances ,do
notcomplyt '
(a)thevaluescre&suredInthewatermustnotdeviatebrmoi-ethan50#
fronthelimitvalueoftheparameters inquestion;
(b)consecutive samplesofwatertaJcenatstatistically appropriate
intervals mustnotdeviate fromtherelevant parametrio values#
Asfarasdissolved oxygenisconcerned ,thelevelsgivenareexpressed
■asminimumoonoentrations fixedfor5095%and100%ofthesamples
examinedintheoourseofoneyear(cumulative frequency ),
• •■ <
»•»
AsfairaspHandtemperature areeonosmea ,thepermissible limit
for-variation hasbeenexplicitly fixed,intheAnnex*,
,•; )«• ' * v 1 .
:; ·' , ,·ι·,.' :';ΪΑ.

6 ENV/373/75-E
• • N.* .. *
< *
PROPOSAL FORACOUNCIL DIRECTIVE ONTHEQUALITY
.HEQUIIM>EKTS FORHATERS CAPABLE OPSUPPORTING
FRESHWATER FISH
TheCouncil oftheEuropean Communities t ' .
Having regard totheTreaty establishing theEuropean Communities ,and
inparticular Articl© 100and235thereof ,
Having regard totheproposal from theCommission , • • '« »
ι
Having regard ,totheOpinion oftheEuropean Parliament ,
«
Having regard totheOpinion oftheEconomic andSocial Committee ,
Whereas theprotection andimprovement oftheenvironment necessitates con­
crete measures toprotect waters against pollution ,including waters capable
ofsupporting freshwater fish ; .
'Whereas itisnecessary fron theecological andeconomic viewpoint to
safeguard fish populations from various harmful consequences resulting
from thedischarge ofharmful substances into thewaters ,such asthere­
duction innumber offish belonging toacertain species and even insome
cases thedisappearance ofanumber ofthese species ;
Whereas theprogramme ofaction oftheEuropean Comfaunities onthe
environment (l)provides that quality objectives aretobejointly drawn
upfixing thevarious requirements which anenvironment must meet inter
alia thedefinition ofparameters forwater ,including waters capable ofsup­
porting fish ;
Whereas differences between theprovisions already inforce orinpreparation
inthevarious Member States asregards thequality requirements forwaters
capable ofsupporting thelife offreshwater fish naydistort conditions
ofcompetition and thus have adirect effect onthefunctioning otthe common
market ;whereas laws inthefield must beharmonized arprovided forbyArticle
100oftheTreaty ; –
Whereas itisnecessary tocouple this approximation oflaws with Community
measures aiming toachieve ,bymeans ofwidexwahging provisions ,oneof
theCommunity 'sobjectives inthefield ofenvironmental protection
andtheimprovement ofthequality oflife ;whereas certain specific
provisions must bolaid down inthis connection ;whereas ,since thepowers
ofaction required tothis endhave notbeen provided for .intheTreaty ,
4tJ>9 necessary ,toinvoke Article 235oftheTreaty } ; -
.: , '■ .' " -
*(VWC112of20December 1973

7EtfV/378/75~E
Whereas,inordertoattainthesequalityobjectives -fch* "ex*mustlaydownlimitvaluescorresponding tocertain4^™+^ Stateswaterscap.Moofsupport!^frcsLate^^fSe^lr^cSTo
those „lthin5yearsfollowir,;-thenotiftcation »fthisDlr™U™-
:-srsu1:
:SB&«S-ÎUSÎS SS»"=£=
Whereasto"ensurethattherequiredstandardforwaterscapableofsupplying
freshwaterfishischecked,samplesshouldbetakenregularlyandthemeasures
relatingtoparameterssetoutintheAnnexshouldbecarriedout;
WhereastheMemberStatesareunabletocontrolcertaincircumstances and
'itistherefore necessary toprovideforthepossibility ofhaving
recoursetocertainderogations ;whereastheCommission mustbenotified
ofthesederogations ; .
Whereastechnical progress necessitates rapidadaptation ofthetechnical
requirements laiddownintheAnnexofthisDirective ;whereas,inorder
tofacilitate theintroduction ofthemeasures requiredforthispurpose,
aprocedure shouldbeprovided forwherebyclosecooperation wouldbe
established bfctween theMemberStatesandtheCommission withinaCommittee
onAdaptation toTechnical ProgresssetupbyvirtueoftheCouncilDireotiveof8Decesaber1975concerning thequalityofbathingwater.*-
*···■:. .-ν,;·\ν·.! *·····:.ι···:···'...··,;·ο·-–·'·» ··λ
• ' .... • •..•f, y :
;°JH°L31of5February1976(76/16O/EEC)

8 ENV/378/75-E
ν
HAS ADOPTED TIGS DIRECTIVE :
■Article 1
1.Tins Directive concerns thequality requirements forwaters capable of
supporting freshwater fish . .
2®Forthepurposes ofthis Directive ,Waters capable ofsupporting
freshwater fish means anyrunning orstanding fresh water whioh
supports oriscapable ofsupporting fish belonging to j
-indigenous speoies presenting anatural diversity or
–species whoso presence isjudged desirable forwater management
purposes .
Waters intended forintensive fish-farming innatural orartificial
fishponds are excluded . ,
Salrnonid waters arewaters which support orarecapable ofsupporting
fish belonging tothefollowing species :salmon ,trout ,grayling ,
coregonidae .
y
Cyprinid waters arewaters which support orarecapable ofsupporting
thecyprinidae orother species whioh normally share the same habitat
asthelatter ,such aspikej perch andeels .
Article 2
1,Thephysical andchemical parameters laying down thequality requirements
forwaters intended tosupport thelife offreshwater fish arelisted
intheAnnex whioh forms anintegral part ofthis Directive *
2»For theapplication ofthese parameters freshwater isdivided into
salrnonid waters andcyprinid waters . . .
Article 3
1.TheMember States shall set ,forthewaters capable ofsupporting
freshwater fish ,theparametric values given inthe /mex .
2.Thevalues setpursuant toparagraph 1maynotbelo^s stringent than
those given incolumn IoftheAnnex . <■
3.Where values appear incolumn GoftheAnnex ,whether ornotthere
isacorresponding value illcolumn IoftheAnnex ,Member States shall
endeavour ,subject toArticle 8,toobserve them asguidelines .

ENV/378/75-E
Article 4
Forthepurposes ofapplying thisDirective ,theMemberStatesshall
specifythosewaterscapableofsupporting freshwater fish.
Article 5
MemberStatesshalladoptallnecessary provisions toensurethatthe
qualityrequirements forwaters ,capableofsupporting freshwater fishcon­
formtotheparametric valueslaiddowninaccordance withArticle 3
withinfiveyearsaftertheentryintoforceofthisDirective .
Article 6
1.Forthepurposes ofArticle 5»watercapableofsupporting freshwater
fishshallbedeemedtoconformtotheprovisions ofthisDirective if
samplesofthatwater,takenattheintervals specified intheAnnex,
atthesamesampling pointandoveraperiodof12months,showthatit
conforms totheparametric valuesforthequalityofthewaterconcerned ,in
thecaseof:
-95ofthesamplesforparameters corresponding tothosespecified in
column 1oftheAnnex,exceptfortemperature ,dissolved oxygenandpH
whichmustoonformtothepercentages givenintheAnnex;
-90'/*>of"th®samplesinallothercases,exceptfordissolved oxygen
whichmustconformtothepercentages givenintheAnnex;
andif,inthecaseofthe5and-10>ofthesampleswhichdonotcomply :
-thevaluesmeasured inthewaterdonotdeviatebymorethan50/'■>from
thoseoftheparameters inquestion ;
-consecutive watersamplestakenatstatistically suitable intervals do
notdeviate fromtherelevant parametric values.
2.Deviations fromthevaluesreferred toinArticle 3shallnotbetaken
intoconsideration inthecalculation ofthepercentage provided forin
paragraph 1whentheyaretheresultoffloodsornaturaldisasters .•
Article 7
1.Thecompetent authorities intheMemberStatesshallcarryoutsampling
operations ,theminimumfrequency ofwhichislaiddown .intheAnnex.
2.Theexactsampling point,thedistance fromthispointtothenearest
pointwherepollutants aredischarged andthedepthatwhichthesamplesareto
betakenshallbefixedbythecompetent authority ofeachMemberState
onthebasisoflocalenvironmental conditions inparticular .
Λ
3.Thereference methodsofanalysis tobeusedforthevariousparameters
inquestion arelistedintheAnnex.TheMemberStatesshalltakethe
necessary measures toensurethatlaboratories usingothermethods
provetotheCommission thattheresultsobtained areequivalent
orcomparable tothosespecified intheAnnex.

10 ENV/370/75-E
Article 8"
1.Implementation ofthemeasures taken pursuant tothis Directive maywider
nocircumstances lead todegradation ofthepresent quality ofv/aters capable
ofsupporting freshwater fish .
2.Member States may atanytime fixmore stringent values than those laid
down inthis Directive ,inrespect ofwaters capable ofsupporting fleshwater
fish .
Article 9
When waters capable ofsupporting freshwater fish cross national frontiers ,
theriparian States shall collaborate indetermining thetransfrontier
freshwraters towhich the Directive relates and the values toboused
fordefining the joint quality objectives applicable tothese waters .The
Commission shall participate inthis collaboration
Article 10
This Directive maybo'waived :
(a)inthecase ofcertain parameters marked (0)intheAnnex ,because
ofexceptional weather orgeographical conditions ;
(b)when water capable ofsupporting freshwater fiBh undergoes natural enrichment
incertain substances causing adeviation from the values prescribed inthe
Annex .
Natural enrichment means theprocess whereby ,without human intervention ,
agiven body ofwater reoeives from the soil certain substances contained
therein . ,
Where aMember State waives theprovisions ofthis Directive ,itshall
forthwith notify theCommission thereof ,stating itsreasons andtheperiods
anticipated .
Article 11
Such amendments asarenecessary foradapting :
–theparameters
-the Gand Ivalues forthese parameters ,and
-themethods ofanalysis
contained inthe Annex totechnioal progress ,shall beadopted bythe
Committee setupbyvirtue ofArticle 10oftheCouncil Directive of
8December 1975 concerning thequality ofbathing water pursuant tothe
procedure laid down inArticle 11ofthat Directive . ,

11 KNV/378/73-E
Article 12
1iemberStatesshallbringintoforcethelaws,regulations andadmi–
i,rativeprovisions necessary tocomplywiththisDirective withintwo
y .nsofitsnotification .Theyshallforthwith informtheCommission
t-eof•
2IemberStateswillcommunicate totheCommission thetextsofthemain
rrisionsofnational lawwhichtheyadoptinthefieldcoveredbythis
Iîctive »
2iemberStatesshallensurethatthetextsofthemainprovisions of
rionallawwhichtheyadoptinthefieldcovered bythisDirective are
tnunicated totheCommission .
Article 13 •
'sDirective isaddressed totheMemberStates,
leatBrussels ,
FortheCouncil
ThePresident

General observation :Thevalues -hown inthetable for e;/hparameter corre
other pararsters ,whether ornotccisi&ered intis*jme >
that thecc.icent rations ofharmful substances arezeroErr/37S/75~u
situations inwinch thelevels oithe
favourable ,
low .which implies ,inparticular ,
PARJIETEH
1)Temperature 0°C
-during the
.warn ser.son
--during tiie .
cold season
2)-Dissol -rr/l
vea
oxygenEalnonid waters
«)
<20(0 )îvprinid waters
s)
420(0 )
*)
^10(0 ) vo(o )
af)Thetemperature shown apply towaters
inareas directly subject totheeffect
cfthermal discharges .Khen natural water
temperature does not exceed the Ivalues ,
increases of1,5 °Cinsalnonid waters
cjid3°Cincvprinid waters are pc,f:.iissibl «
inthethermal discharges fixing zones
and areapplicable inallseasons .Methods ofanalysis or
inspection
Thernomotry
>9
750,.·>9
95;·>7
ιοσ;->550λ->8
100 :>550->7
95;·>5
ιοσ,ί>3Electrochemical
methodkinxnun
sampling
and measu­
ring fre­
quency
quarter­
ly
weekly
ifther­
mal dis­
charge
issus­
pected
Monthly
24-hour
variation
with at
.least one
sample an
hourOBSERVATIONS
Toorapid anincrease
intemperature must "be
avoided soohat fish
reproduction isnotaffected
Inorder totake account
ofseasonal variations in
oxygen contenx ,thelevels
tobeadhered toareexpressed
asminimum concentrations
fixed for50% 95>and100 -;,
ofthesamples examined in
the course ofoneyear
(cumulative frequency ).
Xvalues :Theperiods during
which thedissolved oxygon
concentration islower ^han
7mg/l(salnonid waters )or
5mg/l(cyprinid waters )
must beshort enough notto
harm thefish .

λΙΉΕΧ E^/37S/75-2 2.
SalmcnicL wa-
G Iters
!I
ICyprinid \
~"g !raters
Iîiethodsofanalysis or
inspectioniinimun
panplingkndmea­
suring
FrequencyOBoZltVlTI 01:13
3;pH pH
a)Artifici
tothe"nat
+0.5ofa
between6.0
variations
ofothersu5-9(0)
=)
alpllvari ,
ural"vaiti -
pHunitin
and9«0p
donotine
bstances pationswit!
esmustno
limitsfa
rovidedth
reasethe !
resentin6-5(0)
hrespect
texceed
11ing
atthese
harmfulness
thewater.|
I
I
I
Electronetry
Calibration byce2nsof
twosolutions with
knownpHvalues,prefe­
rablyoneithersideof
thepHvaluebeingmea­
suredandproximate
toit.-quarter­
ly
-weekly
ifchemin
caldis-|
charge
issus­
pected
/;.}Suspended rng/l'
solids
I
!<25(0)|^ j<25(0)
I
I
I
ιFiltration througha
0.45/uporousmembrane
orcentrifugation ;dryin;
at105°CandweighingThevalues .shovrnare
averageconcentrations and
donotapplytosuspended
solidswithharmful chemical
properties .jTloodsare
liabletocauseparticu­
larlyhighconcentrations .

AITî'JEX
E2TV/373/75-E3.
PAILuIETER Salnonid
r,waters
ICyprinid ■
a Iwaters
I
__jMETHDDS OFAISALYSIS OR
Iï-TSPECTIONïiii-miuii
SA1IPLIHG
AHDESA-
SUPJITG
PREQUEîJCYOBSHÎVATIOiTS
5)D30 ■mg/102<3
i
i-
iI
Determination ofbythe !
Winkler methodbeforeand-
sifter5-dayincubation in
conplete darkness~a£"2'0"°+"
1°C
5)Phospha-L-g/l
tes pn 1
4<0'2 <0,4I
Absorption spectrophotome­
tryafterreduction ofthe
phosmolybdic complexι
7)ITitrates ag/l
1T0J<6 Absorption spectrophoto­
metry,withorwithout
priorreduction ofthe
nitrates intonitrites
"î;ITilritt.' Jg/l
TV<°>°5 <0,5 Absorption spectropho-
netry
5)Total ng/l '
ammonium ÎTH,4 !
I^0,04
I<0.2/1Absorption spectropho­
tometryusingindophenol
blueimonthlyI
I

Λ1ΤΙ7ΕΧ378,75--4.
PJJL^iETEl ;
1C)Fnenolic ccnipoundE
mg/l
CSB?OHs)Highercontentscanbepermitted where
therearehighnaturalcontents.Thedif-
Jtj'i'b'rxcnj compared withthenaturalvalues
mustbelessthan0.005mg/l.Fnenolic
compounds mustnotbepresentinsuch
concentrations thatthe;'-adversely affect
fish ,flavour. <
.)Petroleum
hy&rocarbons
12)non-
ionized
.annoniuc ITUag/l
13HDalnonid waters Cyprinidwaters
<0,005(0)
»)^),005(0)
«0
sì «)
h)Petroleum productsnustnotbepresent
inthewaterinsuchquantities that
they:
-Fomavisiblefilaonthesurface of
-thewaterorformcoatings onthebeds
ofwatercourses andlakes;
-Impartadetectable "hydrocarbon "–=tes4-e-tofish;
-Produce harmfuleffectsinfish.
<0,005 <0,025DHODSCFJJTALY3IS OR
IIT3PECTI0F
Aosorption spectropho­
tometry :
-Methodusingparani-
tranilinej
–Methodusing~4–aciiaa
antipyrine .
Visualandby.taste
ITessler methodassocia­
tedwithpHdetermina­
tions^TLiua
<iEDIX.*-
3URIÎTG
PTDQUIÎÎTCY
Twicea
month
Twicea
month
Twicea
monthOSSERVATICI :"
Thelevalsshewntzke
accountofthepresence cf
chlorophenols .Thelevels
maybeexceedediffree
chlorineisno~-reseat.
13)Chlorine mg/l <0,004 <0,004 Palinraethod
H0C1
non-ionizedTwice
m'onth

ÀNIIEX . ETV/378/75-E 5.
PxJlillETER Salnonid waters . Cyprinid watersI
ÎEETHGD3 OPAI7ALY5IS OR j
INSPECTIONMIEEUIi
S^IPLHTG
itKD ïEii .–
sufiïtg
FEEQUMCYOBSEEVAtIOIVS
G I g 'i
II
13)Zinc D£/l ;Z:-.r
water hardness
(n-/lCaCO )':::
10 .
50- ■ -
100
500*?»
<0,03^0,2^0,3^0,5^0,3
ré°.7^1,0^2,0Atonie absorption 1Twice a
nonthThe concentration linits
corresponding tothewater
hardness values lying 1between
10and500'-g/lCaCO^areto
"becalculated byinterpolation .
For hardness levels lower than
10ng/lCaC03 ,thecalculation
ofthe concentration linits
byextrapolation does not
give reliable results .
I

.iiiîiEX sr;/37S/75--E
X5)Otherharmfulsubstances(ivalueapplicabletosaLnonidandcyprinidwaters)
a)îlon-persistent substances
"Theconcentration ofnon-persistent substances ,thehalf-life ofwhichislesstnan9ohoursorwhichdonothavecumula­
tiveeffects,oustnotexceed0.1ofthe'lethalconcentration thresholdanywhereoratcaytins.Moreover"theaverageconcentration ofsuchsubstances in24hoursBustnetexceed0.05ofthelethalconcentration
threshold ,
b)Persistent st-bstances
Theconcentration oxsubstances whicharepersistent orhavecumulative effectsmustuosuchthatitdoesnotproduce
unwantedbio-accumulations :forsomesubstances ,thisconcentration austnotexceed0.05ofthelethalconcentration
threshold jnywhoreoratszi?tiae,aoreover ,theaverageconcentration ofthesesubstances in24hours*austnotexceed0.01ofthelethalconcentration threshold.Forotherhighlypersistent substances ,the"applica­
tionfactor"(thefactorbywhichthevaluesofthelethalconcentration threshold nustbemultiplied toobtainthe
safeconcentration )mustbedetermined fromcasetocase.Thustheconcentration ofcadmium -forinstancenaynotexceed
0.C02ofthelethalconcentration threshold anywhereoratanytine.
Exci^iesofsubstances whicharepersistent orwhichhavecumulative effectsare:
~organo'ialogen compounds
–organophosphorus compounds
-orrêttostahriic compounds
-carcinogenic substances
-mercury
-cadmium
Minimumsamplingandmeasurement frequency :twiceamonth,
1g")fixturesofharmfulsubstances(Ivalueapplicable tosalnonidandcyprinidwaters)
"Substances havingsynergicorantagonistic effects-nustbediscounted inthecalculation below.Onlythecaseofharmful
substances havingadditiveeffectsis.considered here.
If
'a3 ■ 'zrepresent the'Concentrations ofthedifferent nixedsuostances and
-AI. Zrepresentthepermissible .concentrations "ofthedifferent ,suostances whentheyarepresentsingly .a»*âr *a*^ .. ....thecoacentratioBs"crrT?H5' different harmfulsubstances inthemixtureare'considered ;tobepermissible when:
A.B Za-s-4,–+S1
A"1"'3 Zoa .a a
iinyfractions suchasX_whicharelessthanC.2shouldbeeliminated from.the,sumoffractions givenabove".
X„* :a -
liinimumcontrolfrequency :monthly.
sForcertainparameters theseconcentrations aredefinedintheannex;theyshouldbelaiddownfromcasetocase
fortheotherparameters thatarenotspecifically mentioned . ■-