TCEQ CLASS D WATER OPERATOR LICE
g g g g g
NSE EXAM | QUESTIONS & ANSWERS (V
g g g g g g
ERIFIED) | LATEST UPDATE | GRADED A
g g g g g g
+
Rulegofgcapture
CorrectgAnswer:g g Permitsgownergofgagwellgtogpumpgasgmuchgwatergasgdesired,gevengif
watergisgdrainedgfromgbeneathgtheglandgofgothers
whengtreatinggsurfacegwater,gthegprocessgofgcoagulationgwillgbegaffectedgby
CorrectgAnswer:g g allgofgthegabove
agpublicgwatergsystemgisgresponsiblegforgproviding
CorrectgAnswer:g g allgofgthegabove
agcommongtypegofgoxidantgthatgisgusedgatgmostgsurfacegwatergtreatmentgplantsgtogkill
bacteriagandgtogpreventgtrihalomethanegformationgis
CorrectgAnswer:g g combinedgchlorine
Whichgofgthegfollowinggisgagrequiredgstepgingcollectinggagroutinegdistributiongsamplegof
microbiologicalganalysis
1
,CorrectgAnswer:g g usegagsterilizedgbottlesgcontaininggsodiumgthiosulfate
Thegpurposegofgangairlinegongagwellgis
CorrectgAnswer:
whichgmineralsgcausegwaterghardness
CorrectgAnswer:g g calciumgandgmagnesium
Beforegagnewgmaingisgplacedgintogservice,gitgmustgbegproperlygdisinfectedgwithgagminimu
m
chlorinegdosagegof:
a) 50gmg/L
b) 30gmg/L
c) 40gmg/L
d) 75gmg/L
e) 25gmg/L
CorrectgAnswer:g g 25gmg/L
Agdiseasegwhichgmaygbegspreadgbyginadequatelygdisinfectedgwatergis
CorrectgAnswer:g g HepatitisgA
Agphysicalgconnectiongbetweengagpotablegwatergsupplygandgnon-potablegwatergsourcegis
CorrectgAnswer:g g crossgconnection
2
,undergroundggeologicalgwatergbearinggformationsgthatgaregusedgforgpublicgwatergsupplie
s
aregcalled
CorrectgAnswer:g g aquifers
Gravitygfiltersgwillgremovegwhichgofgthegfollowinggfromgsurfacegwatergsupplies:
a) turbidity
b) tastegandgodors
c) nitrates
d) hardness
e) chlorides
CorrectgAnswer:g g turbidity
Activatedgcarbongisgusedgatgagsurfacegwatergtreatmentgplantgprimarilygfor
CorrectgAnswer:g g tastegandgodorgcontrol
Whichgofgthegfollowinggisgpartgofgaghyperchlorinationgsystem
CorrectgAnswer:
Agcommongchemicalgusedgforgdisinfectinggagsmallgpublicgwatergsupplygis
CorrectgAnswer:
Yourggroundgstoragegtankgisg15gfeetghighgandg30gfeetgingdiameter.gAboutghowgmuch
watergcangitghold?
3
, a) 31,700ggallons
b) 79,270ggallons
c) 50,g490ggallons
d) 25,150ggallons
e) 10,600ggallons
CorrectgAnswer:g g 79270
Ifgyougaddedg3.5gmg/Lgofgchlorinegtogyourgstoragegtankgandg30gminutesglatergmeasured
thegresidualgatg1.2gmg/L,gwhatgwasgthegchlorinegdemandgingthegtank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
CorrectgAnswer:g g 2.3
whichgofgthegfollowinggchemicalsgisgcommonlygusedgasgagcoagulantgingsurfacegwater
treatment
CorrectgAnswer:g g aluminumgsulfate
Thegdrawdowngofgagwellgisgdeterminedgby:
a) agproperlyginstalledgairgline
b) thegdifferencegbetweengthegstaticgandgpumpingglevel
4
g g g g g
NSE EXAM | QUESTIONS & ANSWERS (V
g g g g g g
ERIFIED) | LATEST UPDATE | GRADED A
g g g g g g
+
Rulegofgcapture
CorrectgAnswer:g g Permitsgownergofgagwellgtogpumpgasgmuchgwatergasgdesired,gevengif
watergisgdrainedgfromgbeneathgtheglandgofgothers
whengtreatinggsurfacegwater,gthegprocessgofgcoagulationgwillgbegaffectedgby
CorrectgAnswer:g g allgofgthegabove
agpublicgwatergsystemgisgresponsiblegforgproviding
CorrectgAnswer:g g allgofgthegabove
agcommongtypegofgoxidantgthatgisgusedgatgmostgsurfacegwatergtreatmentgplantsgtogkill
bacteriagandgtogpreventgtrihalomethanegformationgis
CorrectgAnswer:g g combinedgchlorine
Whichgofgthegfollowinggisgagrequiredgstepgingcollectinggagroutinegdistributiongsamplegof
microbiologicalganalysis
1
,CorrectgAnswer:g g usegagsterilizedgbottlesgcontaininggsodiumgthiosulfate
Thegpurposegofgangairlinegongagwellgis
CorrectgAnswer:
whichgmineralsgcausegwaterghardness
CorrectgAnswer:g g calciumgandgmagnesium
Beforegagnewgmaingisgplacedgintogservice,gitgmustgbegproperlygdisinfectedgwithgagminimu
m
chlorinegdosagegof:
a) 50gmg/L
b) 30gmg/L
c) 40gmg/L
d) 75gmg/L
e) 25gmg/L
CorrectgAnswer:g g 25gmg/L
Agdiseasegwhichgmaygbegspreadgbyginadequatelygdisinfectedgwatergis
CorrectgAnswer:g g HepatitisgA
Agphysicalgconnectiongbetweengagpotablegwatergsupplygandgnon-potablegwatergsourcegis
CorrectgAnswer:g g crossgconnection
2
,undergroundggeologicalgwatergbearinggformationsgthatgaregusedgforgpublicgwatergsupplie
s
aregcalled
CorrectgAnswer:g g aquifers
Gravitygfiltersgwillgremovegwhichgofgthegfollowinggfromgsurfacegwatergsupplies:
a) turbidity
b) tastegandgodors
c) nitrates
d) hardness
e) chlorides
CorrectgAnswer:g g turbidity
Activatedgcarbongisgusedgatgagsurfacegwatergtreatmentgplantgprimarilygfor
CorrectgAnswer:g g tastegandgodorgcontrol
Whichgofgthegfollowinggisgpartgofgaghyperchlorinationgsystem
CorrectgAnswer:
Agcommongchemicalgusedgforgdisinfectinggagsmallgpublicgwatergsupplygis
CorrectgAnswer:
Yourggroundgstoragegtankgisg15gfeetghighgandg30gfeetgingdiameter.gAboutghowgmuch
watergcangitghold?
3
, a) 31,700ggallons
b) 79,270ggallons
c) 50,g490ggallons
d) 25,150ggallons
e) 10,600ggallons
CorrectgAnswer:g g 79270
Ifgyougaddedg3.5gmg/Lgofgchlorinegtogyourgstoragegtankgandg30gminutesglatergmeasured
thegresidualgatg1.2gmg/L,gwhatgwasgthegchlorinegdemandgingthegtank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
CorrectgAnswer:g g 2.3
whichgofgthegfollowinggchemicalsgisgcommonlygusedgasgagcoagulantgingsurfacegwater
treatment
CorrectgAnswer:g g aluminumgsulfate
Thegdrawdowngofgagwellgisgdeterminedgby:
a) agproperlyginstalledgairgline
b) thegdifferencegbetweengthegstaticgandgpumpingglevel
4
