Water Treatment Operator Certification Study Guide
(AWWA) Questions With Complete Solutions
(Pump efficiency) x (Motor efficiency) Correct Answers Wire
to water efficiency
A continuously flowing watercourse Correct Answers Perennial
Stream
Algae causes PH to ....... at night Correct Answers Decrease
Also called the rule of reasonable sharing Correct Answers
Riparian Doctrine
Amount of water a well produces for each foot of drawdown
Correct Answers Specific capacity
As water temp increases, disinfection action....... Correct
Answers Increases
Capability of water to resist change in PH is called Correct
Answers Buffering capacity
Check valves prevent ........... Correct Answers Water from
flowing in two directions
Chemical formula for bicarbonate Correct Answers HCO-3
Coagulation occurs during the first ..... Correct Answers 1 to 5
seconds
, Free chlorine residual includes Correct Answers OCI- and
HOCI
free chlorine residual valus are based on a contact time of....
Correct Answers 10 minutes
Giardia cysts range in size from Correct Answers 8 to 20
microns
Grease lubricated bearings should be regreased at what
frequency? Correct Answers 3 - 6 Months
Highest concentration of hypochlorous acidoccurs at what PH?
Correct Answers 5
How do you determine watts Correct Answers (amps)x(volts)
How does alkalinity effect the use of copper sulfate Correct
Answers Copper sulfate is more effective as alkalinity
decreases
How many log removal for viruses Correct Answers 4 log
99.99%
How much does a 1-ton cylinder weigh? Correct Answers 3,700
lbs
In a coliform presence-absence test a sample should be Correct
Answers incubated for 24 and 48 hours at 35* C
(AWWA) Questions With Complete Solutions
(Pump efficiency) x (Motor efficiency) Correct Answers Wire
to water efficiency
A continuously flowing watercourse Correct Answers Perennial
Stream
Algae causes PH to ....... at night Correct Answers Decrease
Also called the rule of reasonable sharing Correct Answers
Riparian Doctrine
Amount of water a well produces for each foot of drawdown
Correct Answers Specific capacity
As water temp increases, disinfection action....... Correct
Answers Increases
Capability of water to resist change in PH is called Correct
Answers Buffering capacity
Check valves prevent ........... Correct Answers Water from
flowing in two directions
Chemical formula for bicarbonate Correct Answers HCO-3
Coagulation occurs during the first ..... Correct Answers 1 to 5
seconds
, Free chlorine residual includes Correct Answers OCI- and
HOCI
free chlorine residual valus are based on a contact time of....
Correct Answers 10 minutes
Giardia cysts range in size from Correct Answers 8 to 20
microns
Grease lubricated bearings should be regreased at what
frequency? Correct Answers 3 - 6 Months
Highest concentration of hypochlorous acidoccurs at what PH?
Correct Answers 5
How do you determine watts Correct Answers (amps)x(volts)
How does alkalinity effect the use of copper sulfate Correct
Answers Copper sulfate is more effective as alkalinity
decreases
How many log removal for viruses Correct Answers 4 log
99.99%
How much does a 1-ton cylinder weigh? Correct Answers 3,700
lbs
In a coliform presence-absence test a sample should be Correct
Answers incubated for 24 and 48 hours at 35* C
