©THEBRIGHT EXAM STUDY SOLUTIONS 8/26/2024 11:32 AM
Level 1 water distribution practice test
Questions With Correct Answers
The minimum and maximum chloride residual in a water distribution system is ? - answer✔✔0.2
mg/l and 4mg/L of free chlorine
Nitrate may not exceed what concentration when tested yearly for a groundwater treatment plant
? - answer✔✔10 mg/L
The minimum number of total coliform samples that must be collected per month is based on
Wich of the following ? - answer✔✔The population served by the system
When a distribution bacteriological sample is positive for a total coliform the procedure is ? -
answer✔✔Repeat the sample and take a sample 5 connections upstream and downstream to
confirm total coliform
For lead and copper sample the water must be In the pipeline for at least? - answer✔✔6 hours
What is hydraulic grade line ? - answer✔✔A line to which the water level would rise in a small
,vertical tube,connected to the pipe
How often should cathodic protection anodes in your system be inspected? - answer✔✔Every
year
Water pipelines are generally designed to carry water at a velocity below ? - answer✔✔2.5b
FPS. Feet per second
Energy use in water systems is defined best by ? - answer✔✔Energy use varies among systems
and an energy inventory study would need to be conducted to determine relationships
The minimum recommended separation distance between a water main and a storm sewer is ? -
answer✔✔6 feet
Which of the following should be in an organization plan ? - answer✔✔Identifies clear lines
,defines the divisions of labor ,establishes unity of command
If pipelines are not restrained using steel rods concrete thrust blocks can be used at ? -
answer✔✔Every bend and transition
, ©THEBRIGHT EXAM STUDY SOLUTIONS 8/26/2024 11:32 AM
Engineering Drawings that show the depth of pipe, the pipe location both vertically and
horizontally and the correct distance form a reference point are known as which of the following
- answer✔✔Plan and profile drawings
Which are the components of directing staff ? - answer✔✔Motivating & communicating
The accuracy of large meters should fall within what range ? - answer✔✔Not less than 97% not
more than 103%
In some older water system lead service line still exist. What would be the best practice when
finding lead pipe ? - answer✔✔Be replaced
What is the acceptable range for water loss in a typical municipal distribution system that has a
variety of pvc and di pipe ? - answer✔✔20% (80% effienciency)
What is a major cause of underground construction deaths ? - answer✔✔Lack of shoring or
shoring failure
If the tds is marginally too high for the pump the likely result will be ? - answer✔✔Decrease in
flow rate
Air release valves are installed at what location in a water line ? - answer✔✔At high points of a
pipe line
The maximum pressure at service connections should be less than ? - answer✔✔100 psi
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
Level 1 water distribution practice test
Questions With Correct Answers
The minimum and maximum chloride residual in a water distribution system is ? - answer✔✔0.2
mg/l and 4mg/L of free chlorine
Nitrate may not exceed what concentration when tested yearly for a groundwater treatment plant
? - answer✔✔10 mg/L
The minimum number of total coliform samples that must be collected per month is based on
Wich of the following ? - answer✔✔The population served by the system
When a distribution bacteriological sample is positive for a total coliform the procedure is ? -
answer✔✔Repeat the sample and take a sample 5 connections upstream and downstream to
confirm total coliform
For lead and copper sample the water must be In the pipeline for at least? - answer✔✔6 hours
What is hydraulic grade line ? - answer✔✔A line to which the water level would rise in a small
,vertical tube,connected to the pipe
How often should cathodic protection anodes in your system be inspected? - answer✔✔Every
year
Water pipelines are generally designed to carry water at a velocity below ? - answer✔✔2.5b
FPS. Feet per second
Energy use in water systems is defined best by ? - answer✔✔Energy use varies among systems
and an energy inventory study would need to be conducted to determine relationships
The minimum recommended separation distance between a water main and a storm sewer is ? -
answer✔✔6 feet
Which of the following should be in an organization plan ? - answer✔✔Identifies clear lines
,defines the divisions of labor ,establishes unity of command
If pipelines are not restrained using steel rods concrete thrust blocks can be used at ? -
answer✔✔Every bend and transition
, ©THEBRIGHT EXAM STUDY SOLUTIONS 8/26/2024 11:32 AM
Engineering Drawings that show the depth of pipe, the pipe location both vertically and
horizontally and the correct distance form a reference point are known as which of the following
- answer✔✔Plan and profile drawings
Which are the components of directing staff ? - answer✔✔Motivating & communicating
The accuracy of large meters should fall within what range ? - answer✔✔Not less than 97% not
more than 103%
In some older water system lead service line still exist. What would be the best practice when
finding lead pipe ? - answer✔✔Be replaced
What is the acceptable range for water loss in a typical municipal distribution system that has a
variety of pvc and di pipe ? - answer✔✔20% (80% effienciency)
What is a major cause of underground construction deaths ? - answer✔✔Lack of shoring or
shoring failure
If the tds is marginally too high for the pump the likely result will be ? - answer✔✔Decrease in
flow rate
Air release valves are installed at what location in a water line ? - answer✔✔At high points of a
pipe line
The maximum pressure at service connections should be less than ? - answer✔✔100 psi
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
