TCEQ CLASS D WATER OPERATOR LICE
p p p p p
NSE EXAM | QUESTIONS & ANSWERS (VE
p p p p p p
RIFIED) | LATEST UPDATE | GRADED A+
p p p p p p
Rulepofpcapture
CorrectpAnswer:p p Permitspownerpofpapwellptoppumppaspmuchpwaterpaspdesired,pevenpif
waterpispdrainedpfrompbeneathptheplandpofpothers
whenptreatingpsurfacepwater,pthepprocesspofpcoagulationpwillpbepaffectedpby
CorrectpAnswer:p p allpofpthepabove
appublicpwaterpsystempispresponsiblepforpproviding
CorrectpAnswer:p p allpofpthepabove
apcommonptypepofpoxidantpthatpispusedpatpmostpsurfacepwaterptreatmentpplantsptopkill
bacteriapandptoppreventptrihalomethanepformationpis
CorrectpAnswer:p p combinedpchlorine
Whichpofpthepfollowingpispaprequiredpsteppinpcollectingpaproutinepdistributionpsamplepof
microbiologicalpanalysis
1
,CorrectpAnswer:p p usepapsterilizedpbottlespcontainingpsodiumpthiosulfate
Theppurposepofpanpairlineponpapwellpis
CorrectpAnswer:
whichpmineralspcausepwaterphardness
CorrectpAnswer:p p calciumpandpmagnesium
Beforepapnewpmainpispplacedpintopservice,pitpmustpbepproperlypdisinfectedpwithpapminimum
chlorinepdosagepof:
a) 50pmg/L
b) 30pmg/L
c) 40pmg/L
d) 75pmg/L
e) 25pmg/L
CorrectpAnswer:p p 25pmg/L
Apdiseasepwhichpmaypbepspreadpbypinadequatelypdisinfectedpwaterpis
CorrectpAnswer:p p HepatitispA
Apphysicalpconnectionpbetweenpappotablepwaterpsupplypandpnon-potablepwaterpsourcepis
CorrectpAnswer:p p crosspconnection
2
,undergroundpgeologicalpwaterpbearingpformationspthatparepusedpforppublicpwaterpsupplies
arepcalled
CorrectpAnswer:p p aquifers
Gravitypfilterspwillpremovepwhichpofpthepfollowingpfrompsurfacepwaterpsupplies:
a) turbidity
b) tastepandpodors
c) nitrates
d) hardness
e) chlorides
CorrectpAnswer:p p turbidity
Activatedpcarbonpispusedpatpapsurfacepwaterptreatmentpplantpprimarilypfor
CorrectpAnswer:p p tastepandpodorpcontrol
Whichpofpthepfollowingpisppartpofpaphyperchlorinationpsystem
CorrectpAnswer:
Apcommonpchemicalpusedpforpdisinfectingpapsmallppublicpwaterpsupplypis
CorrectpAnswer:
Yourpgroundpstorageptankpisp15pfeetphighpandp30pfeetpinpdiameter.pAboutphowpmuch
waterpcanpitphold?
3
, a) 31,700pgallons
b) 79,270pgallons
c) 50,p490pgallons
d) 25,150pgallons
e) 10,600pgallons
CorrectpAnswer:p p 79270
Ifpyoupaddedp3.5pmg/Lpofpchlorineptopyourpstorageptankpandp30pminutesplaterpmeasured
thepresidualpatp1.2pmg/L,pwhatpwaspthepchlorinepdemandpinptheptank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
CorrectpAnswer:p p 2.3
whichpofpthepfollowingpchemicalspispcommonlypusedpaspapcoagulantpinpsurfacepwater
treatment
CorrectpAnswer:p p aluminumpsulfate
Thepdrawdownpofpapwellpispdeterminedpby:
a) approperlypinstalledpairpline
b) thepdifferencepbetweenpthepstaticpandppumpingplevel
4
p p p p p
NSE EXAM | QUESTIONS & ANSWERS (VE
p p p p p p
RIFIED) | LATEST UPDATE | GRADED A+
p p p p p p
Rulepofpcapture
CorrectpAnswer:p p Permitspownerpofpapwellptoppumppaspmuchpwaterpaspdesired,pevenpif
waterpispdrainedpfrompbeneathptheplandpofpothers
whenptreatingpsurfacepwater,pthepprocesspofpcoagulationpwillpbepaffectedpby
CorrectpAnswer:p p allpofpthepabove
appublicpwaterpsystempispresponsiblepforpproviding
CorrectpAnswer:p p allpofpthepabove
apcommonptypepofpoxidantpthatpispusedpatpmostpsurfacepwaterptreatmentpplantsptopkill
bacteriapandptoppreventptrihalomethanepformationpis
CorrectpAnswer:p p combinedpchlorine
Whichpofpthepfollowingpispaprequiredpsteppinpcollectingpaproutinepdistributionpsamplepof
microbiologicalpanalysis
1
,CorrectpAnswer:p p usepapsterilizedpbottlespcontainingpsodiumpthiosulfate
Theppurposepofpanpairlineponpapwellpis
CorrectpAnswer:
whichpmineralspcausepwaterphardness
CorrectpAnswer:p p calciumpandpmagnesium
Beforepapnewpmainpispplacedpintopservice,pitpmustpbepproperlypdisinfectedpwithpapminimum
chlorinepdosagepof:
a) 50pmg/L
b) 30pmg/L
c) 40pmg/L
d) 75pmg/L
e) 25pmg/L
CorrectpAnswer:p p 25pmg/L
Apdiseasepwhichpmaypbepspreadpbypinadequatelypdisinfectedpwaterpis
CorrectpAnswer:p p HepatitispA
Apphysicalpconnectionpbetweenpappotablepwaterpsupplypandpnon-potablepwaterpsourcepis
CorrectpAnswer:p p crosspconnection
2
,undergroundpgeologicalpwaterpbearingpformationspthatparepusedpforppublicpwaterpsupplies
arepcalled
CorrectpAnswer:p p aquifers
Gravitypfilterspwillpremovepwhichpofpthepfollowingpfrompsurfacepwaterpsupplies:
a) turbidity
b) tastepandpodors
c) nitrates
d) hardness
e) chlorides
CorrectpAnswer:p p turbidity
Activatedpcarbonpispusedpatpapsurfacepwaterptreatmentpplantpprimarilypfor
CorrectpAnswer:p p tastepandpodorpcontrol
Whichpofpthepfollowingpisppartpofpaphyperchlorinationpsystem
CorrectpAnswer:
Apcommonpchemicalpusedpforpdisinfectingpapsmallppublicpwaterpsupplypis
CorrectpAnswer:
Yourpgroundpstorageptankpisp15pfeetphighpandp30pfeetpinpdiameter.pAboutphowpmuch
waterpcanpitphold?
3
, a) 31,700pgallons
b) 79,270pgallons
c) 50,p490pgallons
d) 25,150pgallons
e) 10,600pgallons
CorrectpAnswer:p p 79270
Ifpyoupaddedp3.5pmg/Lpofpchlorineptopyourpstorageptankpandp30pminutesplaterpmeasured
thepresidualpatp1.2pmg/L,pwhatpwaspthepchlorinepdemandpinptheptank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
CorrectpAnswer:p p 2.3
whichpofpthepfollowingpchemicalspispcommonlypusedpaspapcoagulantpinpsurfacepwater
treatment
CorrectpAnswer:p p aluminumpsulfate
Thepdrawdownpofpapwellpispdeterminedpby:
a) approperlypinstalledpairpline
b) thepdifferencepbetweenpthepstaticpandppumpingplevel
4
