LEVEL 1 WATER DISTRIBUTION EXAM
SCRIPT 2026 QUESTIONS WITH 100%
ACCURATE ANSWERS GRADED A+
⩥ In selecting and Evaluating a tank, storage capacity must be matched
_______of the system ? Answer: Peak demand
⩥ A hydraulic grade line will always slope in what direction ? Answer:
Slope downward in the direction of the water flow
⩥ Where does the majority of microbial growth with in a water
distribution system occur ? 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 ? Answer: They must be at least 12 hours apart
⩥ When backfilling a pipe line how deep should the first layer of
backfill be compacted Answer: At the horizontal centerline of the pipe
⩥ What is an important step in problem solving Answer: Realization that
a problem still exist
, ⩥ What type of pipe joint is a considered inflexible and therefore is not
usually installed below ground ? Answer: Flanged joint
⩥ buttefly valves are used in distribution systems ? 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 ? 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 ? Answer: Two
⩥ An unsafe condition per osha regulations would be ? Answer:
Working in granular soil with a trench width less than 1:1
⩥ What type of pump consist of an impeller fixed on a rotating shaft
enclosed in a casing ? Answer: A centrifugal pump
SCRIPT 2026 QUESTIONS WITH 100%
ACCURATE ANSWERS GRADED A+
⩥ In selecting and Evaluating a tank, storage capacity must be matched
_______of the system ? Answer: Peak demand
⩥ A hydraulic grade line will always slope in what direction ? Answer:
Slope downward in the direction of the water flow
⩥ Where does the majority of microbial growth with in a water
distribution system occur ? 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 ? Answer: They must be at least 12 hours apart
⩥ When backfilling a pipe line how deep should the first layer of
backfill be compacted Answer: At the horizontal centerline of the pipe
⩥ What is an important step in problem solving Answer: Realization that
a problem still exist
, ⩥ What type of pipe joint is a considered inflexible and therefore is not
usually installed below ground ? Answer: Flanged joint
⩥ buttefly valves are used in distribution systems ? 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 ? 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 ? Answer: Two
⩥ An unsafe condition per osha regulations would be ? Answer:
Working in granular soil with a trench width less than 1:1
⩥ What type of pump consist of an impeller fixed on a rotating shaft
enclosed in a casing ? Answer: A centrifugal pump
