Water Distribution D2 California Practice Exam
Newest 2026 Questions and Correct Detailed
Answers Already Graded A+
Which is the best definition of turbidity in water? - CORRECT ANSWER-
anything in water that scatters light
A competent person must inspect excavations and adjacent areas for hazards -
CORRECT ANSWER-daily, prior to the start of work, and as needed throughout
the shift.
The component of a centrifugal pump sometimes installed on the end of a suction
pipe to hold the priming is known as a - CORRECT ANSWER-foot valve
The principal purpose of an altitude valve on an elevated tank is to - CORRECT
ANSWER-control maximum filling level in distribution storage.
The term primacy means the - CORRECT ANSWER-authority by the states to
supersede the USEPA drinking water regulations.
, Reciprocating positive displacement pumps are also known as - CORRECT
ANSWER-Piston pumps
Modertely hard water will have a hardness range of ----- mg/L as - CORRECT
ANSWER-61 to 120
A common method for removing hydrogen sulfide from water is - CORRECT
ANSWER-aeration
The treatment process designed to kill pathogenic organisms is - CORRECT
ANSWER-disinfection
Lead in drinking water can result in - CORRECT ANSWER-impaired mental
functioning in children.
A disease that might be transferred to a new victim through water is - CORRECT
ANSWER-typhoid
An average percentage range for unaccounted for water in a fully metered system
is - CORRECT ANSWER-11 to 15%
Newest 2026 Questions and Correct Detailed
Answers Already Graded A+
Which is the best definition of turbidity in water? - CORRECT ANSWER-
anything in water that scatters light
A competent person must inspect excavations and adjacent areas for hazards -
CORRECT ANSWER-daily, prior to the start of work, and as needed throughout
the shift.
The component of a centrifugal pump sometimes installed on the end of a suction
pipe to hold the priming is known as a - CORRECT ANSWER-foot valve
The principal purpose of an altitude valve on an elevated tank is to - CORRECT
ANSWER-control maximum filling level in distribution storage.
The term primacy means the - CORRECT ANSWER-authority by the states to
supersede the USEPA drinking water regulations.
, Reciprocating positive displacement pumps are also known as - CORRECT
ANSWER-Piston pumps
Modertely hard water will have a hardness range of ----- mg/L as - CORRECT
ANSWER-61 to 120
A common method for removing hydrogen sulfide from water is - CORRECT
ANSWER-aeration
The treatment process designed to kill pathogenic organisms is - CORRECT
ANSWER-disinfection
Lead in drinking water can result in - CORRECT ANSWER-impaired mental
functioning in children.
A disease that might be transferred to a new victim through water is - CORRECT
ANSWER-typhoid
An average percentage range for unaccounted for water in a fully metered system
is - CORRECT ANSWER-11 to 15%
