Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
Water Treatment Operator Certification
Study Guide (AWWA) Solutions Updated
2024
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
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, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
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
Copyright ©Stuvia International BV 2010-2024 Page 2/5
Water Treatment Operator Certification
Study Guide (AWWA) Solutions Updated
2024
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
Copyright ©Stuvia International BV 2010-2024 Page 1/5
, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
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
Copyright ©Stuvia International BV 2010-2024 Page 2/5
