Water Treatment Operator Certification
Study Guide Exam 2026 Questions and
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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, 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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Study Guide Exam 2026 Questions and
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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, 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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
