Water Treatment Operator Certification
(AWWA) Study Guide UPDATED ACTUAL
Exam Questions and CORRECT Answers
A continuously flowing watercourse - CORRECT ANSWER Perennial Stream
Algae causes PH to ....... at night - CORRECT ANSWER Decrease
What contributes to creation of algae blooms - CORRECT ANSWER Increased nutrients
Iron is found mostly in what sources of water - CORRECT ANSWER Groundwater
Also called the rule of reasonable sharing - CORRECT ANSWER Riparian Doctrine
Water high in salinity and warm is - CORRECT ANSWER Low in dissolved oxygen
Reservoir turnover - CORRECT ANSWER Denser water at surface sinking toward the
bottom
Water that flows into rivers after rainfall - CORRECT ANSWER Surface runoff
Recreation can ....... of land adjacent to a reservoir - CORRECT ANSWER increase the
threat of erosion
Water bearing geological zone composed of material deposited by flowing rivers - CORRECT
ANSWER Alluvial aquifer
, What effect will algae have on dissolved oxygen - CORRECT ANSWER Increase DO
during the day and lower DO during the night
How does alkalinity effect the use of copper sulfate - CORRECT ANSWER Copper
sulfate is more effective as alkalinity decreases
The amount of water in a formation depends on..... - CORRECT ANSWER The porosity
of the water-bearing formation
What enables blue green algae to grow - CORRECT ANSWER Nutrients
Recommended loading rate of copper sulfate for algae control - CORRECT ANSWER 5.4
lbs per acre of surface area
Primary origin of coliform bacteria - CORRECT ANSWER Animal or human feces
Amount of water a well produces for each foot of drawdown - CORRECT
ANSWER Specific capacity
Most common well used in public water supply - CORRECT ANSWER Drilled well
What is disinfection - CORRECT ANSWER inactivation or killing of pathogenic
organisms
free chlorine residual valus are based on a contact time of.... - CORRECT ANSWER 10
minutes
Strength of Calcium Hypochlorite - CORRECT ANSWER 65-70%
(AWWA) Study Guide UPDATED ACTUAL
Exam Questions and CORRECT Answers
A continuously flowing watercourse - CORRECT ANSWER Perennial Stream
Algae causes PH to ....... at night - CORRECT ANSWER Decrease
What contributes to creation of algae blooms - CORRECT ANSWER Increased nutrients
Iron is found mostly in what sources of water - CORRECT ANSWER Groundwater
Also called the rule of reasonable sharing - CORRECT ANSWER Riparian Doctrine
Water high in salinity and warm is - CORRECT ANSWER Low in dissolved oxygen
Reservoir turnover - CORRECT ANSWER Denser water at surface sinking toward the
bottom
Water that flows into rivers after rainfall - CORRECT ANSWER Surface runoff
Recreation can ....... of land adjacent to a reservoir - CORRECT ANSWER increase the
threat of erosion
Water bearing geological zone composed of material deposited by flowing rivers - CORRECT
ANSWER Alluvial aquifer
, What effect will algae have on dissolved oxygen - CORRECT ANSWER Increase DO
during the day and lower DO during the night
How does alkalinity effect the use of copper sulfate - CORRECT ANSWER Copper
sulfate is more effective as alkalinity decreases
The amount of water in a formation depends on..... - CORRECT ANSWER The porosity
of the water-bearing formation
What enables blue green algae to grow - CORRECT ANSWER Nutrients
Recommended loading rate of copper sulfate for algae control - CORRECT ANSWER 5.4
lbs per acre of surface area
Primary origin of coliform bacteria - CORRECT ANSWER Animal or human feces
Amount of water a well produces for each foot of drawdown - CORRECT
ANSWER Specific capacity
Most common well used in public water supply - CORRECT ANSWER Drilled well
What is disinfection - CORRECT ANSWER inactivation or killing of pathogenic
organisms
free chlorine residual valus are based on a contact time of.... - CORRECT ANSWER 10
minutes
Strength of Calcium Hypochlorite - CORRECT ANSWER 65-70%
