WATER OPERATOR CLASS 3-
PRACTICE TEST QUESTIONS
COMPLETE QUESTIONS AND
ANSWERS
0.08 ppm -ANSMCL for TTHM's
0.06 ppm -ANSMCL for HAA5's
0.01 ppm -ANSMCL for Arsenic
0.015 ppm -ANSMCL for Lead
90 days -ANSTurbidity meter must be calibrated every:
Less than 0.3 for 95% of the time. -ANSMCL for turbidity is
2 buffers -ANSpH meters must be calibrated using
Algae blooms -ANSA grassy of fishy taste in reservoir water indicates
Improper backwashing of filters -ANSMudballs are caused by
Carbonate -ANSLime can only be used to soften water with
0 ppm -ANSWater leaving Zeolite softener has a hardness of
Schmutzdecke -ANSThe top layer of a slow sand filter is called the
Coagulation, flocculation, sedimentation -ANSA solids contact unit combines
4 ppm, 2 ppm -ANSThe PMCL for fluoride is: The SMCL is:
Warmer -ANSFlock will settle better in warm or cool water?
High pH -ANSThe greensand manganese removal process requires a:
Volatile organic compounds & gases (odor) -ANSAeration releases what from water?
, Amperomatic tiration -ANSThe most accurate method of determining chlorine residual
is:
Sulfuric acid -ANSAn alkalinity sample is titrated using
Mixing and measuring -ANSA beaker is used for
Nephelometric turbidity units -ANSNTU stands for:
5 years, 10 years -ANSBacteria results must be kept for: Chem results for:
Tubrbine, Propeller, Venturi, Nutating discs -ANSFour ways water meters operate are:
Procedure, Part, Budget, Cost -ANSA preventative maintenance program includes:
Lower insurance rates -ANSAn advantage of a standpipe:
Geographic Informaton System -ANSWhat is GIS?
Cavitation (boiling) -ANSHigh flow rates in pumps can cause.
Mechanical rakes, drag chain, traveling bridges -ANSThree ways sludge is removed
from a settling basin are
Inlet, Outlet, Settling, Sludge -ANSThe 4 zones of settling basin are:
Before -ANSPolyphosphates are injected before or after chlorination?
Filter aid -ANSA nonionic polymer is usually used as a:
Giardia, Legionella, Cryptosporidium -ANSThree "bugs" targeted by the SWTR are:
Returned to plant head -ANSWhat should be done with backwash water?
Taste, odor, chlorine, THM's -ANSActivated carbon is used to remove:
Adsorption, oxidation, or aeratoin -ANSTHM's can be removed by:
Less -ANSAlgae produces more or less oxygen at night as compared to day?
99.99% -ANSA LOG removal of 4 is a removal of what percent?
Removes color, taste, odor -ANSOne outstanding advantage to ozone is:
Monochloromines, Dichloramines, Trichlorimaines -ANSThree forms of combined
chlorine residual are:
PRACTICE TEST QUESTIONS
COMPLETE QUESTIONS AND
ANSWERS
0.08 ppm -ANSMCL for TTHM's
0.06 ppm -ANSMCL for HAA5's
0.01 ppm -ANSMCL for Arsenic
0.015 ppm -ANSMCL for Lead
90 days -ANSTurbidity meter must be calibrated every:
Less than 0.3 for 95% of the time. -ANSMCL for turbidity is
2 buffers -ANSpH meters must be calibrated using
Algae blooms -ANSA grassy of fishy taste in reservoir water indicates
Improper backwashing of filters -ANSMudballs are caused by
Carbonate -ANSLime can only be used to soften water with
0 ppm -ANSWater leaving Zeolite softener has a hardness of
Schmutzdecke -ANSThe top layer of a slow sand filter is called the
Coagulation, flocculation, sedimentation -ANSA solids contact unit combines
4 ppm, 2 ppm -ANSThe PMCL for fluoride is: The SMCL is:
Warmer -ANSFlock will settle better in warm or cool water?
High pH -ANSThe greensand manganese removal process requires a:
Volatile organic compounds & gases (odor) -ANSAeration releases what from water?
, Amperomatic tiration -ANSThe most accurate method of determining chlorine residual
is:
Sulfuric acid -ANSAn alkalinity sample is titrated using
Mixing and measuring -ANSA beaker is used for
Nephelometric turbidity units -ANSNTU stands for:
5 years, 10 years -ANSBacteria results must be kept for: Chem results for:
Tubrbine, Propeller, Venturi, Nutating discs -ANSFour ways water meters operate are:
Procedure, Part, Budget, Cost -ANSA preventative maintenance program includes:
Lower insurance rates -ANSAn advantage of a standpipe:
Geographic Informaton System -ANSWhat is GIS?
Cavitation (boiling) -ANSHigh flow rates in pumps can cause.
Mechanical rakes, drag chain, traveling bridges -ANSThree ways sludge is removed
from a settling basin are
Inlet, Outlet, Settling, Sludge -ANSThe 4 zones of settling basin are:
Before -ANSPolyphosphates are injected before or after chlorination?
Filter aid -ANSA nonionic polymer is usually used as a:
Giardia, Legionella, Cryptosporidium -ANSThree "bugs" targeted by the SWTR are:
Returned to plant head -ANSWhat should be done with backwash water?
Taste, odor, chlorine, THM's -ANSActivated carbon is used to remove:
Adsorption, oxidation, or aeratoin -ANSTHM's can be removed by:
Less -ANSAlgae produces more or less oxygen at night as compared to day?
99.99% -ANSA LOG removal of 4 is a removal of what percent?
Removes color, taste, odor -ANSOne outstanding advantage to ozone is:
Monochloromines, Dichloramines, Trichlorimaines -ANSThree forms of combined
chlorine residual are:
