Water Treatment Operator Certification
ACTUAL 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%
What chemicals raise PH in water - CORRECT ANSWER- ✔✔Soda Ash, Caustic Soda,
As water temp increases, disinfection action....... - CORRECT ANSWER- ✔✔Increases
Maximum chlorine usage per day from a 150lb cylinder - CORRECT ANSWER- ✔✔42 lbs
ACTUAL 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%
What chemicals raise PH in water - CORRECT ANSWER- ✔✔Soda Ash, Caustic Soda,
As water temp increases, disinfection action....... - CORRECT ANSWER- ✔✔Increases
Maximum chlorine usage per day from a 150lb cylinder - CORRECT ANSWER- ✔✔42 lbs
