Water Treatment Operator Certification Study Guide Test Exam 2024/2025

Water Treatment Operator Certification
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ii
Study Guide Test Exam 2024/2025
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ii

A iicontinuously iiflowing iiwatercourse ii- iiCORRECT iiANSWER-Perennial iiStream ii
ii

Algae iicauses iiPH iito ii....... iiat iinight ii- iiCORRECT iiANSWER-Decrease ii
ii

What iicontributes iito iicreation iiof iialgae iiblooms ii- iiCORRECT iiANSWER-
Increased ii
ii
nutrients
ii

Iron iiis iifound iimostly iiin iiwhat iisources iiof iiwater ii- iiCORRECT iiANSWER-Groundwater ii
ii

Also iicalled iithe iirule iiof iireasonable iisharing ii- iiCORRECT iiANSWER-Riparian iiDoctrine ii
ii

Water iihigh iiin iisalinity iiand iiwarm iiis ii- iiCORRECT iiANSWER-Low iiin iidissolved iioxygen ii
ii

Reservoir iiturnover ii- iiCORRECT iiANSWER-Denser iiwater iiat iisurface iisinking iitoward
iithe ii
ii
bottom
ii

Water iithat iiflows iiinto iirivers iiafter iirainfall ii- iiCORRECT iiANSWER-Surface iirunoff ii
ii

Recreation iican ii....... iiof iiland iiadjacent iito iia iireservoir ii- iiCORRECT iiANSWER-increase
iithe ii
ii
threat iiof

iierosion
ii

Water iibearing iigeological iizone iicomposed iiof iimaterial iideposited iiby iiflowing
iirivers ii-
ii
CORRECT iiANSWER-Alluvial

iiaquifer
ii

What iieffect iiwill iialgae iihave iion iidissolved iioxygen ii- iiCORRECT iiANSWER-Increase
iiDO ii
ii
during iithe iiday iiand iilower iiDO iiduring iithe
iinight
ii

How iidoes iialkalinity iieffect iithe iiuse iiof iicopper iisulfate ii- iiCORRECT iiANSWER-
Copper ii
ii
sulfate iiis iimore iieffective iias iialkalinity
iidecreases
ii

The iiamount iiof iiwater iiin iia iiformation iidepends iion..... ii- iiCORRECT iiANSWER-The
iiporosity ii
ii
of iithe iiwater-bearing


iiformation
ii

, What iienables iiblue iigreen iialgae iito iigrow ii- iiCORRECT iiANSWER-Nutrients ii
ii

Recommended iiloading iirate iiof iicopper iisulfate iifor iialgae iicontrol ii- iiCORRECT
iiANSWER-
ii
5.4 iilbs iiper iiacre iiof iisurface
iiarea
ii

Primary iiorigin iiof iicoliform iibacteria ii- iiCORRECT iiANSWER-Animal iior iihuman iifeces ii
ii

Amount iiof iiwater iia iiwell iiproduces iifor iieach iifoot iiof iidrawdown ii- iiCORRECT
iiANSWER-
ii
Specific
iicapacity
ii

Most iicommon iiwell iiused iiin iipublic iiwater iisupply ii- iiCORRECT iiANSWER-Drilled iiwell ii
ii

What iiis iidisinfection ii- iiCORRECT iiANSWER-inactivation iior iikilling iiof
iipathogenic ii
ii
organisms
ii

free iichlorine iiresidual iivalus iiare iibased iion iia iicontact iitime iiof.... ii- iiCORRECT iiANSWER-
10
ii
minutes
ii

Strength iiof iiCalcium iiHypochlorite ii- iiCORRECT iiANSWER-65-70% ii
ii

What iichemicals iiraise iiPH iiin iiwater ii- iiCORRECT iiANSWER-Soda iiAsh, iiCaustic iiSoda, ii
ii

As iiwater iitemp iiincreases, iidisinfection iiaction....... ii- iiCORRECT iiANSWER-Increases ii
ii

Maximum iichlorine iiusage iiper iiday iifrom iia ii150lb iicylinder ii- iiCORRECT iiANSWER-42
iilbs ii
ii

What iichemical iiis iiused iito iisoften iiwater iithrough iichemical iiprecipitation ii-
iiCORRECT ii
ii
ANSWER-Calcium iihydroxide

ii(lime)
ii

Mudballs iiare iiclumps iiof........ ii- iiCORRECT iiANSWER-Filter iimedia iiand iiother iimaterial ii
ii

Coagulation iioccurs iiduring iithe iifirst ii..... ii- iiCORRECT iiANSWER-1 iito ii5 iiseconds ii
ii

When iishould iia iifilter iibe iibackwashed ii- iiCORRECT iiANSWER-High iihead,
iiturbidity ii
ii
breakthrough, iior iidesignated
iihours
ii

What iidoes iiCaCO3 ii(Calcium iiCarbonate) iido? ii- iiCORRECT iiANSWER-
Decreases ii
ii
corrosion
ii