Water Operator Class 3-Practice Test
Questions with Correct Answers
0.08 ppm - ANSWERSMCL for TTHM's
0.06 ppm - ANSWERSMCL for HAA5's
0.01 ppm - ANSWERSMCL for Arsenic
0.015 ppm - ANSWERSMCL for Lead
90 days - ANSWERSTurbidity meter must be calibrated every:
Less than 0.3 for 95% of the time. - ANSWERSMCL for turbidity is
2 buffers - ANSWERSpH meters must be calibrated using
Algae blooms - ANSWERSA grassy of fishy taste in reservoir water indicates
Improper backwashing of filters - ANSWERSMudballs are caused by
Carbonate - ANSWERSLime can only be used to soften water with
0 ppm - ANSWERSWater leaving Zeolite softener has a hardness of
Schmutzdecke - ANSWERSThe top layer of a slow sand filter is called the
Coagulation, flocculation, sedimentation - ANSWERSA solids contact unit combines
4 ppm, 2 ppm - ANSWERSThe PMCL for fluoride is: The SMCL is:
Warmer - ANSWERSFlock will settle better in warm or cool water?
High pH - ANSWERSThe greensand manganese removal process requires a:
Volatile organic compounds & gases (odor) - ANSWERSAeration releases what from
water?
Amperomatic tiration - ANSWERSThe most accurate method of determining chlorine
residual is:
Sulfuric acid - ANSWERSAn alkalinity sample is titrated using
, Mixing and measuring - ANSWERSA beaker is used for
Nephelometric turbidity units - ANSWERSNTU stands for:
5 years, 10 years - ANSWERSBacteria results must be kept for: Chem results for:
Tubrbine, Propeller, Venturi, Nutating discs - ANSWERSFour ways water meters
operate are:
Procedure, Part, Budget, Cost - ANSWERSA preventative maintenance program
includes:
Lower insurance rates - ANSWERSAn advantage of a standpipe:
Geographic Informaton System - ANSWERSWhat is GIS?
Cavitation (boiling) - ANSWERSHigh flow rates in pumps can cause.
Mechanical rakes, drag chain, traveling bridges - ANSWERSThree ways sludge is
removed from a settling basin are
Inlet, Outlet, Settling, Sludge - ANSWERSThe 4 zones of settling basin are:
Before - ANSWERSPolyphosphates are injected before or after chlorination?
Filter aid - ANSWERSA nonionic polymer is usually used as a:
Giardia, Legionella, Cryptosporidium - ANSWERSThree "bugs" targeted by the SWTR
are:
Returned to plant head - ANSWERSWhat should be done with backwash water?
Taste, odor, chlorine, THM's - ANSWERSActivated carbon is used to remove:
Adsorption, oxidation, or aeratoin - ANSWERSTHM's can be removed by:
Less - ANSWERSAlgae produces more or less oxygen at night as compared to day?
99.99% - ANSWERSA LOG removal of 4 is a removal of what percent?
Removes color, taste, odor - ANSWERSOne outstanding advantage to ozone is:
Monochloromines, Dichloramines, Trichlorimaines - ANSWERSThree forms of
combined chlorine residual are:
THM's - ANSWERSTOC's are precursor in the formation of:
Questions with Correct Answers
0.08 ppm - ANSWERSMCL for TTHM's
0.06 ppm - ANSWERSMCL for HAA5's
0.01 ppm - ANSWERSMCL for Arsenic
0.015 ppm - ANSWERSMCL for Lead
90 days - ANSWERSTurbidity meter must be calibrated every:
Less than 0.3 for 95% of the time. - ANSWERSMCL for turbidity is
2 buffers - ANSWERSpH meters must be calibrated using
Algae blooms - ANSWERSA grassy of fishy taste in reservoir water indicates
Improper backwashing of filters - ANSWERSMudballs are caused by
Carbonate - ANSWERSLime can only be used to soften water with
0 ppm - ANSWERSWater leaving Zeolite softener has a hardness of
Schmutzdecke - ANSWERSThe top layer of a slow sand filter is called the
Coagulation, flocculation, sedimentation - ANSWERSA solids contact unit combines
4 ppm, 2 ppm - ANSWERSThe PMCL for fluoride is: The SMCL is:
Warmer - ANSWERSFlock will settle better in warm or cool water?
High pH - ANSWERSThe greensand manganese removal process requires a:
Volatile organic compounds & gases (odor) - ANSWERSAeration releases what from
water?
Amperomatic tiration - ANSWERSThe most accurate method of determining chlorine
residual is:
Sulfuric acid - ANSWERSAn alkalinity sample is titrated using
, Mixing and measuring - ANSWERSA beaker is used for
Nephelometric turbidity units - ANSWERSNTU stands for:
5 years, 10 years - ANSWERSBacteria results must be kept for: Chem results for:
Tubrbine, Propeller, Venturi, Nutating discs - ANSWERSFour ways water meters
operate are:
Procedure, Part, Budget, Cost - ANSWERSA preventative maintenance program
includes:
Lower insurance rates - ANSWERSAn advantage of a standpipe:
Geographic Informaton System - ANSWERSWhat is GIS?
Cavitation (boiling) - ANSWERSHigh flow rates in pumps can cause.
Mechanical rakes, drag chain, traveling bridges - ANSWERSThree ways sludge is
removed from a settling basin are
Inlet, Outlet, Settling, Sludge - ANSWERSThe 4 zones of settling basin are:
Before - ANSWERSPolyphosphates are injected before or after chlorination?
Filter aid - ANSWERSA nonionic polymer is usually used as a:
Giardia, Legionella, Cryptosporidium - ANSWERSThree "bugs" targeted by the SWTR
are:
Returned to plant head - ANSWERSWhat should be done with backwash water?
Taste, odor, chlorine, THM's - ANSWERSActivated carbon is used to remove:
Adsorption, oxidation, or aeratoin - ANSWERSTHM's can be removed by:
Less - ANSWERSAlgae produces more or less oxygen at night as compared to day?
99.99% - ANSWERSA LOG removal of 4 is a removal of what percent?
Removes color, taste, odor - ANSWERSOne outstanding advantage to ozone is:
Monochloromines, Dichloramines, Trichlorimaines - ANSWERSThree forms of
combined chlorine residual are:
THM's - ANSWERSTOC's are precursor in the formation of:
