WATER TREATMENT OPERATOR
CERTIFICATION STUDY GUIDE
(AWWA) EXAM QUESTIONS AND
DETAILED ANSWERS. EXPERT
VERIFIED FOR GUARANTEED PASS.
A continuously flowing watercourse - ANS Perennial Stream
Algae causes PH to ....... at night - ANS Decrease
What contributes to creation of algae blooms - ANS Increased nutrients
Iron is found mostly in what sources of water - ANS Groundwater
Also called the rule of reasonable sharing - ANS Riparian Doctrine
Water high in salinity and warm is - ANS Low in dissolved oxygen
Reservoir turnover - ANS Denser water at surface sinking toward the bottom
Water that flows into rivers after rainfall - ANS Surface runoff
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Recreation can ....... of land adjacent to a reservoir - ANS increase the threat of erosion
Water bearing geological zone composed of material deposited by flowing rivers -
ANS Alluvial aquifer
What effect will algae have on dissolved oxygen - ANS Increase DO during the day and lower
DO during the night
How does alkalinity effect the use of copper sulfate - ANS Copper sulfate is more effective as
alkalinity decreases
The amount of water in a formation depends on..... - ANS The porosity of the water-bearing
formation
What enables blue green algae to grow - ANS Nutrients
Recommended loading rate of copper sulfate for algae control - ANS 5.4 lbs per acre of
surface area
Primary origin of coliform bacteria - ANS Animal or human feces
Amount of water a well produces for each foot of drawdown - ANS Specific capacity
Most common well used in public water supply - ANS Drilled well
What is disinfection - ANS inactivation or killing of pathogenic organisms
free chlorine residual valus are based on a contact time of.... - ANS 10 minutes
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
CERTIFICATION STUDY GUIDE
(AWWA) EXAM QUESTIONS AND
DETAILED ANSWERS. EXPERT
VERIFIED FOR GUARANTEED PASS.
A continuously flowing watercourse - ANS Perennial Stream
Algae causes PH to ....... at night - ANS Decrease
What contributes to creation of algae blooms - ANS Increased nutrients
Iron is found mostly in what sources of water - ANS Groundwater
Also called the rule of reasonable sharing - ANS Riparian Doctrine
Water high in salinity and warm is - ANS Low in dissolved oxygen
Reservoir turnover - ANS Denser water at surface sinking toward the bottom
Water that flows into rivers after rainfall - ANS Surface runoff
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Recreation can ....... of land adjacent to a reservoir - ANS increase the threat of erosion
Water bearing geological zone composed of material deposited by flowing rivers -
ANS Alluvial aquifer
What effect will algae have on dissolved oxygen - ANS Increase DO during the day and lower
DO during the night
How does alkalinity effect the use of copper sulfate - ANS Copper sulfate is more effective as
alkalinity decreases
The amount of water in a formation depends on..... - ANS The porosity of the water-bearing
formation
What enables blue green algae to grow - ANS Nutrients
Recommended loading rate of copper sulfate for algae control - ANS 5.4 lbs per acre of
surface area
Primary origin of coliform bacteria - ANS Animal or human feces
Amount of water a well produces for each foot of drawdown - ANS Specific capacity
Most common well used in public water supply - ANS Drilled well
What is disinfection - ANS inactivation or killing of pathogenic organisms
free chlorine residual valus are based on a contact time of.... - ANS 10 minutes
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
