WATER DISTRIBUTION OPERATOR
GRADE 1 2026 CERTIFICATION
ADEQ NEWEST QUESTIONS AND
DETAILED CORRECT ANSWERS | A+
GRADE
What causes pump cavitation? A suction line may be
____________ or the pump is above the waterline. You
have overpumped the well. Correct Answer Clogged
What does continuous leakage from a mechanical seal on
a pump indicate? The mechanical seal needs to be
___________________. Correct Answer Replaced
What is a possible cause of a scored shaft sleeve? The
_____________ has broken down Correct Answer
Packing
What is one disadvantage of a centrifugal pump? It is
not______________. Correct Answer Self-Priming
What is the best seal to use for a pump operating under
high suction head conditions? A _____________ seal.
Correct Answer Mechanical
What is the common method used to secure an impeller to
the shaft on double-suction pump? A _____________ and
a tight fit. Correct Answer Key
,What is the main purpose of the wear rings in a centrifugal
double suction pump? The wear rings maintain a flow
_______________ between the impeller discharge and
suction areas. Correct Answer Restriction
What is the purpose of the foot valve on a pump? It keeps
the pump _____________. Correct Answer Primed
At which type of facility is a remote operator allowed to
operate? Any Grade 1 or Grade 2 __________________.
Correct Answer Facility
At which type of facility is an on-site operator mandatory?
All grade _____ and grade _________ facilities. Correct
Answer 3 & 4
How close must a certified operator of a facility live to a
facility to legally operate the facility as a remote operator?
Within 200 miles by ________ travel. Correct Answer
Ground
Systems with what types of source water are required by
law to treat using filtration and disinfection?
_________________ under the direct influence of surface
water and surface water sources. Correct Answer
Groundwater
The quality of water in a storage facility could degrade due
to excessive water age caused by low demand and short-
circuiting within the distribution storage reservoir. Which of
, the following is not a reason for water quality degradation?
The water quality ______________ program is not in
compliance. Correct Answer Sampling
What is the definition of an "on-site operation?" An
operator who visits a facility at least _____________ to
ensure that it is operating properly. Correct Answer Daily
What is the definition of an "on-site representative?" On-
site representative means a person located at a facility
who monitors the daily operation at the facility and
maintains contact with the ____________ operator
regarding the facility. Correct Answer Remote
What is the frequency that a remote operator must inspect
a grade 1 or grade 2 water treatment plant or distributes
groundwater? As often as necessary but no less then
________________. Correct Answer Monthly
What is the objective of vulnerability assessment? To
determine ____________ in the distribution or water
system. Correct Answer Weakness
How far from the edge of a hole must you place the spoil
from an excavation? Correct Answer 2 feet
Before beginning an excavation, who should be contacted
to assist in determining the location of all underground
utilities in the work are? An "underground Service Alert"
center, "One Call Center" or ____________________, all
three of these are the same. Correct Answer Bluestake
GRADE 1 2026 CERTIFICATION
ADEQ NEWEST QUESTIONS AND
DETAILED CORRECT ANSWERS | A+
GRADE
What causes pump cavitation? A suction line may be
____________ or the pump is above the waterline. You
have overpumped the well. Correct Answer Clogged
What does continuous leakage from a mechanical seal on
a pump indicate? The mechanical seal needs to be
___________________. Correct Answer Replaced
What is a possible cause of a scored shaft sleeve? The
_____________ has broken down Correct Answer
Packing
What is one disadvantage of a centrifugal pump? It is
not______________. Correct Answer Self-Priming
What is the best seal to use for a pump operating under
high suction head conditions? A _____________ seal.
Correct Answer Mechanical
What is the common method used to secure an impeller to
the shaft on double-suction pump? A _____________ and
a tight fit. Correct Answer Key
,What is the main purpose of the wear rings in a centrifugal
double suction pump? The wear rings maintain a flow
_______________ between the impeller discharge and
suction areas. Correct Answer Restriction
What is the purpose of the foot valve on a pump? It keeps
the pump _____________. Correct Answer Primed
At which type of facility is a remote operator allowed to
operate? Any Grade 1 or Grade 2 __________________.
Correct Answer Facility
At which type of facility is an on-site operator mandatory?
All grade _____ and grade _________ facilities. Correct
Answer 3 & 4
How close must a certified operator of a facility live to a
facility to legally operate the facility as a remote operator?
Within 200 miles by ________ travel. Correct Answer
Ground
Systems with what types of source water are required by
law to treat using filtration and disinfection?
_________________ under the direct influence of surface
water and surface water sources. Correct Answer
Groundwater
The quality of water in a storage facility could degrade due
to excessive water age caused by low demand and short-
circuiting within the distribution storage reservoir. Which of
, the following is not a reason for water quality degradation?
The water quality ______________ program is not in
compliance. Correct Answer Sampling
What is the definition of an "on-site operation?" An
operator who visits a facility at least _____________ to
ensure that it is operating properly. Correct Answer Daily
What is the definition of an "on-site representative?" On-
site representative means a person located at a facility
who monitors the daily operation at the facility and
maintains contact with the ____________ operator
regarding the facility. Correct Answer Remote
What is the frequency that a remote operator must inspect
a grade 1 or grade 2 water treatment plant or distributes
groundwater? As often as necessary but no less then
________________. Correct Answer Monthly
What is the objective of vulnerability assessment? To
determine ____________ in the distribution or water
system. Correct Answer Weakness
How far from the edge of a hole must you place the spoil
from an excavation? Correct Answer 2 feet
Before beginning an excavation, who should be contacted
to assist in determining the location of all underground
utilities in the work are? An "underground Service Alert"
center, "One Call Center" or ____________________, all
three of these are the same. Correct Answer Bluestake
