Water Distribution Level 2 Exam
Advanced Practice 2026|2027
Questions and Answers with Complete
A+ Solutions 100% Correct!!!
What is disinfection? - Correct Answer -Selective destruction or inactivation of pathogenic
organisms
What happens when chlorine is added to water and the reaction of chlorine with organic and
inorganic materials stops? - Correct Answer -Chlorine demand has been satisfied
What is the chlorine dose? - Correct Answer -Chlorine demand plus chlorine residual
What is the one objective of a safety program? - Correct Answer -To prevent accidents
What should an operator do if the operator can not remove a safety hazard? - Correct Answer -
Call hazard to attention of those who have authority to remove hazard
What is the basic requirement for an enclosed guard? - Correct Answer -Prevent hands and
arms from making contact with dangerous moving parts
, In water distribution systems what is the primary concern when entering a confined space? -
Correct Answer -oxygen deficiency
What is the meaning of accountability - Correct Answer -When an operator ensures that the
manager is informed of results or events
The selection method and examination process used to evaluate applicants must be limited to
which areas? - Correct Answer -Applicants knowledge, skills, and abilities to preform job-related
activities
What is the purpose of a distribution system O & M program? - Correct Answer -To ensure that
the system performs as designed and intended
If contamination of a water supply is discovered, what is the most important immediate
concern? - Correct Answer -Safety of the public
What are the responsibilities of water distribution system operators? - Correct Answer --deliver
safe pleasant drinking water
- make sure adequate amount of water and pressure are available during emergencies
Why does surface water require treatment? - Correct Answer --To remove,kill, or inactivate
diease causing organisms
Advanced Practice 2026|2027
Questions and Answers with Complete
A+ Solutions 100% Correct!!!
What is disinfection? - Correct Answer -Selective destruction or inactivation of pathogenic
organisms
What happens when chlorine is added to water and the reaction of chlorine with organic and
inorganic materials stops? - Correct Answer -Chlorine demand has been satisfied
What is the chlorine dose? - Correct Answer -Chlorine demand plus chlorine residual
What is the one objective of a safety program? - Correct Answer -To prevent accidents
What should an operator do if the operator can not remove a safety hazard? - Correct Answer -
Call hazard to attention of those who have authority to remove hazard
What is the basic requirement for an enclosed guard? - Correct Answer -Prevent hands and
arms from making contact with dangerous moving parts
, In water distribution systems what is the primary concern when entering a confined space? -
Correct Answer -oxygen deficiency
What is the meaning of accountability - Correct Answer -When an operator ensures that the
manager is informed of results or events
The selection method and examination process used to evaluate applicants must be limited to
which areas? - Correct Answer -Applicants knowledge, skills, and abilities to preform job-related
activities
What is the purpose of a distribution system O & M program? - Correct Answer -To ensure that
the system performs as designed and intended
If contamination of a water supply is discovered, what is the most important immediate
concern? - Correct Answer -Safety of the public
What are the responsibilities of water distribution system operators? - Correct Answer --deliver
safe pleasant drinking water
- make sure adequate amount of water and pressure are available during emergencies
Why does surface water require treatment? - Correct Answer --To remove,kill, or inactivate
diease causing organisms
