Water Treatment Operator Certification
Bundled Solution Study Guide
(AWWA) Latest Exam With Questions
And Answers 2025 Verified Exam All
Are Correct Tests
/. A continuously flowing watercourse - Answer-✅Perennial Stream
/.Algae causes PH to ....... at night - Answer-✅Decrease
/.What contributes to creation of algae blooms - Answer-✅Increased nutrients
/.Iron is found mostly in what sources of water - Answer-✅Groundwater
/.Also called the rule of reasonable sharing - Answer-✅Riparian Doctrine
/.Water high in salinity and warm is - Answer-✅Low in dissolved oxygen
/.Reservoir turnover - Answer-✅Denser water at surface sinking toward the bottom
/.Water that flows into rivers after rainfall - Answer-✅Surface runoff
/.Recreation can ....... of land adjacent to a reservoir - Answer-✅increase the threat of
erosion
/.Water bearing geological zone composed of material deposited by flowing rivers -
Answer-✅Alluvial aquifer
/.What effect will algae have on dissolved oxygen - Answer-✅Increase DO during the
day and lower DO during the night
/.How does alkalinity effect the use of copper sulfate - Answer-✅Copper sulfate is more
effective as alkalinity decreases
/.The amount of water in a formation depends on..... - Answer-✅The porosity of the
water-bearing formation
, /.What enables blue green algae to grow - Answer-✅Nutrients
/.Recommended loading rate of copper sulfate for algae control - Answer-✅5.4 lbs per
acre of surface area
/.Primary origin of coliform bacteria - Answer-✅Animal or human feces
/.Amount of water a well produces for each foot of drawdown - Answer-✅Specific
capacity
/.Most common well used in public water supply - Answer-✅Drilled well
/.What is disinfection - Answer-✅inactivation or killing of pathogenic organisms
/.free chlorine residual valus are based on a contact time of.... - Answer-✅10 minutes
/.Strength of Calcium Hypochlorite - Answer-✅65-70%
/.What chemicals raise PH in water - Answer-✅Soda Ash, Caustic Soda,
/.As water temp increases, disinfection action....... - Answer-✅Increases
/.Maximum chlorine usage per day from a 150lb cylinder - Answer-✅42 lbs
/.What chemical is used to soften water through chemical precipitation - Answer-
✅Calcium hydroxide (lime)
/.Mudballs are clumps of........ - Answer-✅Filter media and other material
/.Coagulation occurs during the first ..... - Answer-✅1 to 5 seconds
/.When should a filter be backwashed - Answer-✅High head, turbidity breakthrough, or
designated hours
/.What does CaCO3 (Calcium Carbonate) do? - Answer-✅Decreases corrosion
/.Most important test to indicate proper sedimentation - Answer-✅turbidity
/.What is considered and excellent zeta potential - Answer-✅-1 to -4
/.What is used to test for residual chlorine - Answer-✅DPD
/.What is a major part of a turbidimeter - Answer-✅Light source
Bundled Solution Study Guide
(AWWA) Latest Exam With Questions
And Answers 2025 Verified Exam All
Are Correct Tests
/. A continuously flowing watercourse - Answer-✅Perennial Stream
/.Algae causes PH to ....... at night - Answer-✅Decrease
/.What contributes to creation of algae blooms - Answer-✅Increased nutrients
/.Iron is found mostly in what sources of water - Answer-✅Groundwater
/.Also called the rule of reasonable sharing - Answer-✅Riparian Doctrine
/.Water high in salinity and warm is - Answer-✅Low in dissolved oxygen
/.Reservoir turnover - Answer-✅Denser water at surface sinking toward the bottom
/.Water that flows into rivers after rainfall - Answer-✅Surface runoff
/.Recreation can ....... of land adjacent to a reservoir - Answer-✅increase the threat of
erosion
/.Water bearing geological zone composed of material deposited by flowing rivers -
Answer-✅Alluvial aquifer
/.What effect will algae have on dissolved oxygen - Answer-✅Increase DO during the
day and lower DO during the night
/.How does alkalinity effect the use of copper sulfate - Answer-✅Copper sulfate is more
effective as alkalinity decreases
/.The amount of water in a formation depends on..... - Answer-✅The porosity of the
water-bearing formation
, /.What enables blue green algae to grow - Answer-✅Nutrients
/.Recommended loading rate of copper sulfate for algae control - Answer-✅5.4 lbs per
acre of surface area
/.Primary origin of coliform bacteria - Answer-✅Animal or human feces
/.Amount of water a well produces for each foot of drawdown - Answer-✅Specific
capacity
/.Most common well used in public water supply - Answer-✅Drilled well
/.What is disinfection - Answer-✅inactivation or killing of pathogenic organisms
/.free chlorine residual valus are based on a contact time of.... - Answer-✅10 minutes
/.Strength of Calcium Hypochlorite - Answer-✅65-70%
/.What chemicals raise PH in water - Answer-✅Soda Ash, Caustic Soda,
/.As water temp increases, disinfection action....... - Answer-✅Increases
/.Maximum chlorine usage per day from a 150lb cylinder - Answer-✅42 lbs
/.What chemical is used to soften water through chemical precipitation - Answer-
✅Calcium hydroxide (lime)
/.Mudballs are clumps of........ - Answer-✅Filter media and other material
/.Coagulation occurs during the first ..... - Answer-✅1 to 5 seconds
/.When should a filter be backwashed - Answer-✅High head, turbidity breakthrough, or
designated hours
/.What does CaCO3 (Calcium Carbonate) do? - Answer-✅Decreases corrosion
/.Most important test to indicate proper sedimentation - Answer-✅turbidity
/.What is considered and excellent zeta potential - Answer-✅-1 to -4
/.What is used to test for residual chlorine - Answer-✅DPD
/.What is a major part of a turbidimeter - Answer-✅Light source
