LEVEL 1 WATER DISTRIBUTION PRACTICE TEST
QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
\.The minimum and maximum chloride residual in a water distribution
system is ? - ANSWERS-0.2 mg/l and 4mg/L of free chlorine
\.Nitrate may not exceed what concentration when tested yearly for a
groundwater treatment plant ? - ANSWERS-10 mg/L
\.The minimum number of total coliform samples that must be collected
per month is based on Wich of the following ? - ANSWERS-The
population served by the system
\.When a distribution bacteriological sample is positive for a total
coliform the procedure is ? - ANSWERS-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? - ANSWERS-6 hours
, \.What is hydraulic grade line ? - ANSWERS-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? - ANSWERS-Every year
\.Water pipelines are generally designed to carry water at a velocity
below ? - ANSWERS-2.5b FPS. Feet per second
\.Energy use in water systems is defined best by ? - ANSWERS-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 ? - ANSWERS-6 feet
\.Which of the following should be in an organization plan ? - ANSWERS-
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 ? - ANSWERS-Every bend and transition
QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
\.The minimum and maximum chloride residual in a water distribution
system is ? - ANSWERS-0.2 mg/l and 4mg/L of free chlorine
\.Nitrate may not exceed what concentration when tested yearly for a
groundwater treatment plant ? - ANSWERS-10 mg/L
\.The minimum number of total coliform samples that must be collected
per month is based on Wich of the following ? - ANSWERS-The
population served by the system
\.When a distribution bacteriological sample is positive for a total
coliform the procedure is ? - ANSWERS-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? - ANSWERS-6 hours
, \.What is hydraulic grade line ? - ANSWERS-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? - ANSWERS-Every year
\.Water pipelines are generally designed to carry water at a velocity
below ? - ANSWERS-2.5b FPS. Feet per second
\.Energy use in water systems is defined best by ? - ANSWERS-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 ? - ANSWERS-6 feet
\.Which of the following should be in an organization plan ? - ANSWERS-
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 ? - ANSWERS-Every bend and transition
