Water Distribution Exam Newest 2026 Questions
and Correct Detailed Answers Already Graded A+
What is the responsibility of water distribution system operators? - CORRECT
ANSWER-Ensure safe and pleasant drinking water is delivered to everyone's tap
A valve that automatically shuts off the flow into an elevated tank when the water
level in the tank reaches a predetermined level. - CORRECT ANSWER-Altitude
valve
A pump consisting of an impeller fixed on a rotating shaft, that is enclosed in a
casing, and having an inlet and a discharge connection would be called -
CORRECT ANSWER-Centrifugal pump
What is the MAIN purpose of a water storage facility? - CORRECT ANSWER-To
provide sufficient supply of water to average daily demands on the water supply
system
When is the best time to take a storage tank out of service? - CORRECT
ANSWER-When consumption is lowest
, A noisy or vibrating valve may be an indication of what? - CORRECT ANSWER-
Cavitation
The selective destruction or inactivation of pathogenic organisms is - CORRECT
ANSWER-Disinfection
Pathogenic organisms can be removed from water, killed, or inactivated by -
CORRECT ANSWER-Filtration
The most commonly used distribution system disinfection is - CORRECT
ANSWER-Free chlorine
A greenish- yellow gas with a penetrating and distinctive odor, two and a half
times heavier than air is - CORRECT ANSWER-Chlorine
A brief session to discuss aspects of a job and safety - CORRECT ANSWER-
Tailgate safety meeting
The most common means of disinfecting drinking water used today to protect the
public's health? - CORRECT ANSWER-Chlorination
and Correct Detailed Answers Already Graded A+
What is the responsibility of water distribution system operators? - CORRECT
ANSWER-Ensure safe and pleasant drinking water is delivered to everyone's tap
A valve that automatically shuts off the flow into an elevated tank when the water
level in the tank reaches a predetermined level. - CORRECT ANSWER-Altitude
valve
A pump consisting of an impeller fixed on a rotating shaft, that is enclosed in a
casing, and having an inlet and a discharge connection would be called -
CORRECT ANSWER-Centrifugal pump
What is the MAIN purpose of a water storage facility? - CORRECT ANSWER-To
provide sufficient supply of water to average daily demands on the water supply
system
When is the best time to take a storage tank out of service? - CORRECT
ANSWER-When consumption is lowest
, A noisy or vibrating valve may be an indication of what? - CORRECT ANSWER-
Cavitation
The selective destruction or inactivation of pathogenic organisms is - CORRECT
ANSWER-Disinfection
Pathogenic organisms can be removed from water, killed, or inactivated by -
CORRECT ANSWER-Filtration
The most commonly used distribution system disinfection is - CORRECT
ANSWER-Free chlorine
A greenish- yellow gas with a penetrating and distinctive odor, two and a half
times heavier than air is - CORRECT ANSWER-Chlorine
A brief session to discuss aspects of a job and safety - CORRECT ANSWER-
Tailgate safety meeting
The most common means of disinfecting drinking water used today to protect the
public's health? - CORRECT ANSWER-Chlorination
