2026 WATER DISTRIBUTION OPERATOR
LEVEL 1 NEWEST EXAM QUESTIONS
AND DETAILED CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
The maximum pressure at service connections should be
less than ? Correct Answer 100 psi
In selecting and Evaluating a tank, storage capacity must
be matched _______of the system ? Correct Answer Peak
demand
A hydraulic grade line will always slope in what direction ?
Correct Answer Slope downward in the direction of the
water flow
Where does the majority of microbial growth with in a
water distribution system occur ? Correct Answer Dead
end water lines
Wells that are biologically contaminated from repeat
coliform or fecal coliform must be bacteriologically
surveyed and sample which is not correct ? Correct
Answer They must be at least 12 hours apart
When backfilling a pipe line how deep should the first layer
of backfill be compacted Correct Answer At the horizontal
centerline of the pipe
, What is an important step in problem solving Correct
Answer Realization that a problem still exist
What type of pipe joint is a considered inflexible and
therefore is not usually installed below ground ? Correct
Answer Flanged joint
buttefly valves are used in distribution systems ? Correct
Answer Generally when the pipeline is greater than 16''.
When someone throttling might be replaced .
When a motorized operator is needed for automated
control .
Fire hydrants should be placed at ? Correct Answer 350 to
600 feet apart
At all intersections
In close proximity when used in high value commercials
applications
AWWA M-17 requires how many fire hydrants to be used
when conducting a fire flow test ? Correct Answer Two
An unsafe condition per osha regulations would be ?
Correct Answer Working in granular soil with a trench
width less than 1:1
LEVEL 1 NEWEST EXAM QUESTIONS
AND DETAILED CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
The maximum pressure at service connections should be
less than ? Correct Answer 100 psi
In selecting and Evaluating a tank, storage capacity must
be matched _______of the system ? Correct Answer Peak
demand
A hydraulic grade line will always slope in what direction ?
Correct Answer Slope downward in the direction of the
water flow
Where does the majority of microbial growth with in a
water distribution system occur ? Correct Answer Dead
end water lines
Wells that are biologically contaminated from repeat
coliform or fecal coliform must be bacteriologically
surveyed and sample which is not correct ? Correct
Answer They must be at least 12 hours apart
When backfilling a pipe line how deep should the first layer
of backfill be compacted Correct Answer At the horizontal
centerline of the pipe
, What is an important step in problem solving Correct
Answer Realization that a problem still exist
What type of pipe joint is a considered inflexible and
therefore is not usually installed below ground ? Correct
Answer Flanged joint
buttefly valves are used in distribution systems ? Correct
Answer Generally when the pipeline is greater than 16''.
When someone throttling might be replaced .
When a motorized operator is needed for automated
control .
Fire hydrants should be placed at ? Correct Answer 350 to
600 feet apart
At all intersections
In close proximity when used in high value commercials
applications
AWWA M-17 requires how many fire hydrants to be used
when conducting a fire flow test ? Correct Answer Two
An unsafe condition per osha regulations would be ?
Correct Answer Working in granular soil with a trench
width less than 1:1
