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Water Treatment Operator Certification
Exam Practice Questions and Answers
What is removed at the raw water intake? - ANSWER✔✔-Fish and debris
What is more likely to be found in groundwater? - ANSWER✔✔-Trihalomethane
What is most commonly used to control algae growth in reservoirs? - ANSWER✔✔-copper sulfate
What are common filtration rates in gravity filtration? - ANSWER✔✔-2 to 10 GPM/sq.ft.
Leakage within a centrifugal pump is intended for what purpose? - ANSWER✔✔-Cool moving parts
What is the definition of a grab sample? - ANSWER✔✔-A single sample of water collected at a particular
time and place which represents the composition of the water only at that time and place.
Adding sodium hypochlorite to water will have what effect? - ANSWER✔✔-Increase pH
What is the purpose of the groundwater rule? - ANSWER✔✔-To protect the groundwater from disease-
causing microorganisms
What is true about the total coliform rule? - ANSWER✔✔-Establishes an MCL based on the presence and
absence of total coliform or E. coli
What will happen to the water quality if chlorine is injected at the same location as power activated
carbon (PAC)? - ANSWER✔✔-Chlorine will react with carbon and neutralize the effects of both
What reacts with chlorine to form trihalomethane? - ANSWER✔✔-Natural organic matter
Copyright ©Stuvia International BV 2010-2024 Page 1/3
Water Treatment Operator Certification
Exam Practice Questions and Answers
What is removed at the raw water intake? - ANSWER✔✔-Fish and debris
What is more likely to be found in groundwater? - ANSWER✔✔-Trihalomethane
What is most commonly used to control algae growth in reservoirs? - ANSWER✔✔-copper sulfate
What are common filtration rates in gravity filtration? - ANSWER✔✔-2 to 10 GPM/sq.ft.
Leakage within a centrifugal pump is intended for what purpose? - ANSWER✔✔-Cool moving parts
What is the definition of a grab sample? - ANSWER✔✔-A single sample of water collected at a particular
time and place which represents the composition of the water only at that time and place.
Adding sodium hypochlorite to water will have what effect? - ANSWER✔✔-Increase pH
What is the purpose of the groundwater rule? - ANSWER✔✔-To protect the groundwater from disease-
causing microorganisms
What is true about the total coliform rule? - ANSWER✔✔-Establishes an MCL based on the presence and
absence of total coliform or E. coli
What will happen to the water quality if chlorine is injected at the same location as power activated
carbon (PAC)? - ANSWER✔✔-Chlorine will react with carbon and neutralize the effects of both
What reacts with chlorine to form trihalomethane? - ANSWER✔✔-Natural organic matter
Copyright ©Stuvia International BV 2010-2024 Page 1/3
