Water Treatment Operator Certification Study Guide (AWWA)
1.A continuously flowing watercourse: Perennial Stream
2.Algae causes PH to ....... at night: Decrease
3.What contributes to creation of algae blooms: Increased nutrients
4.Iron is found mostly in what sources of water: Groundwater
5.Also called the rule of reasonable sharing: Riparian Doctrine
6.Water high in salinity and warm is: Low in dissolved oxygen
7.Reservoir turnover: Denser water at surface sinking toward the bottom
8.Water that flows into rivers after rainfall: Surface runoff
9.Recreation can ....... of land adjacent to a reservoir: increase the
threat of erosion
10.Water bearing geological zone composed of material deposited by
flowing rivers: Alluvial aquifer
11.What effect will algae have on dissolved oxygen: Increase DO during the
day and lower DO during the night
12.How does alkalinity effect the use of copper sulfate: Copper sulfate is
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, more effective as alkalinity decreases
13.The amount of water in a formation depends on.....: The porosity of
the water-bearing formation
14.What enables blue green algae to grow: Nutrients
15.Recommended loading rate of copper sulfate for algae control: 5.4 lbs
per acre of surface area
16.Primary origin of coliform bacteria: Animal or human feces
17.Amount of water a well produces for each foot of drawdown:
Specific capacity
18.Most common well used in public water supply: Drilled well
19.What is disinfection: inactivation or killing of pathogenic organisms
20.free chlorine residual valus are based on a contact time of....: 10 minutes
21.Strength of Calcium Hypochlorite: 65-70%
22.What chemicals raise PH in water: Soda Ash, Caustic Soda,
23.As water temp increases, disinfection action.........Increases
24.Maximum chlorine usage per day from a 150lb cylinder: 42 lbs
25.What chemical is used to soften water through chemical precipitation:
Cal- cium hydroxide (lime)
26.Mudballs are clumps of........: Filter media and other material
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1.A continuously flowing watercourse: Perennial Stream
2.Algae causes PH to ....... at night: Decrease
3.What contributes to creation of algae blooms: Increased nutrients
4.Iron is found mostly in what sources of water: Groundwater
5.Also called the rule of reasonable sharing: Riparian Doctrine
6.Water high in salinity and warm is: Low in dissolved oxygen
7.Reservoir turnover: Denser water at surface sinking toward the bottom
8.Water that flows into rivers after rainfall: Surface runoff
9.Recreation can ....... of land adjacent to a reservoir: increase the
threat of erosion
10.Water bearing geological zone composed of material deposited by
flowing rivers: Alluvial aquifer
11.What effect will algae have on dissolved oxygen: Increase DO during the
day and lower DO during the night
12.How does alkalinity effect the use of copper sulfate: Copper sulfate is
1/
7
, more effective as alkalinity decreases
13.The amount of water in a formation depends on.....: The porosity of
the water-bearing formation
14.What enables blue green algae to grow: Nutrients
15.Recommended loading rate of copper sulfate for algae control: 5.4 lbs
per acre of surface area
16.Primary origin of coliform bacteria: Animal or human feces
17.Amount of water a well produces for each foot of drawdown:
Specific capacity
18.Most common well used in public water supply: Drilled well
19.What is disinfection: inactivation or killing of pathogenic organisms
20.free chlorine residual valus are based on a contact time of....: 10 minutes
21.Strength of Calcium Hypochlorite: 65-70%
22.What chemicals raise PH in water: Soda Ash, Caustic Soda,
23.As water temp increases, disinfection action.........Increases
24.Maximum chlorine usage per day from a 150lb cylinder: 42 lbs
25.What chemical is used to soften water through chemical precipitation:
Cal- cium hydroxide (lime)
26.Mudballs are clumps of........: Filter media and other material
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