WATER DISTRIBUTION OPERATOR LEVEL 1 PRACTICE
TEST WITH LATEST UPDATED (QUESTIONS AND
ANSWERS) ALREADY PASSED!
Alkalinity is expressed in: Correct Answers mg/L of equivalent calcium
carbonate
A pH of 6.7 would be considered: Correct Answers Acidic
In high concentrations, calcium and magnesium cause: Correct Answers
Hard water
Low water temperature has what effect on the density of water? Correct
Answers Increases the density
T or F: All bacteria under the Total Coliform group are pathogenic
Correct Answers False
T or F: The P/A test method will allow you to quantify the number of
organisms per 100 mL of sample Correct Answers False
A positive to the Total Coliform test using the MPN method is indicated
by: Correct Answers Formation of gas bubbles
The action levels for lead and copper are based on: Correct Answers
90th percentile level of tap water samples
,When changing gas chlorine cylinders, an operator should: Correct
Answers Do it with a buddy and have access to SCBA gear
Gas chlorine is closer to: Correct Answers 100% pure
The chlorine dose added to water for disinfection is: Correct Answers
Demand plus residual
The sterilization of drinking water Correct Answers is not necessary
Chlorine gas has what effect on the pH of water? Correct Answers It
lowers the pH
Disease causing bacteria are known as what? Correct Answers
Pathogenic
What is the recommended minimum contact time when disinfecting
water mains with the C12 slug method? Correct Answers 3 hours
Depending on its concentration and length of exposure, which of the
following gases can cause lung and skin irritation? Correct Answers
Chlorine
What class of fire involves electrical equipment? Correct Answers Class
C
, When a permit is required to enter a confined space, who may sign the
permit? Correct Answers Entry supervisor
OSHA is the acronym for Correct Answers Occupational Safety and
Health Administration
What information is required on the tag during a switch lock-out?
Correct Answers Name of person who locked out the switch
Which of the following provides a profile of hazardous substances or
mixtures? Correct Answers MSDS
Under any soil conditions, cave-in protection is required for trenches or
excavations that are how many feet deep? Correct Answers 5 feet
What type of fire hydrants are usually seen in the movies sheared off
and spraying? Correct Answers Wet barrel
Fire hydrants should be installed how many feet back from the curb?
Correct Answers 2 feet
When using a fire hydrant for construction, what should be used?
Correct Answers Corp stop and venturi meter
TEST WITH LATEST UPDATED (QUESTIONS AND
ANSWERS) ALREADY PASSED!
Alkalinity is expressed in: Correct Answers mg/L of equivalent calcium
carbonate
A pH of 6.7 would be considered: Correct Answers Acidic
In high concentrations, calcium and magnesium cause: Correct Answers
Hard water
Low water temperature has what effect on the density of water? Correct
Answers Increases the density
T or F: All bacteria under the Total Coliform group are pathogenic
Correct Answers False
T or F: The P/A test method will allow you to quantify the number of
organisms per 100 mL of sample Correct Answers False
A positive to the Total Coliform test using the MPN method is indicated
by: Correct Answers Formation of gas bubbles
The action levels for lead and copper are based on: Correct Answers
90th percentile level of tap water samples
,When changing gas chlorine cylinders, an operator should: Correct
Answers Do it with a buddy and have access to SCBA gear
Gas chlorine is closer to: Correct Answers 100% pure
The chlorine dose added to water for disinfection is: Correct Answers
Demand plus residual
The sterilization of drinking water Correct Answers is not necessary
Chlorine gas has what effect on the pH of water? Correct Answers It
lowers the pH
Disease causing bacteria are known as what? Correct Answers
Pathogenic
What is the recommended minimum contact time when disinfecting
water mains with the C12 slug method? Correct Answers 3 hours
Depending on its concentration and length of exposure, which of the
following gases can cause lung and skin irritation? Correct Answers
Chlorine
What class of fire involves electrical equipment? Correct Answers Class
C
, When a permit is required to enter a confined space, who may sign the
permit? Correct Answers Entry supervisor
OSHA is the acronym for Correct Answers Occupational Safety and
Health Administration
What information is required on the tag during a switch lock-out?
Correct Answers Name of person who locked out the switch
Which of the following provides a profile of hazardous substances or
mixtures? Correct Answers MSDS
Under any soil conditions, cave-in protection is required for trenches or
excavations that are how many feet deep? Correct Answers 5 feet
What type of fire hydrants are usually seen in the movies sheared off
and spraying? Correct Answers Wet barrel
Fire hydrants should be installed how many feet back from the curb?
Correct Answers 2 feet
When using a fire hydrant for construction, what should be used?
Correct Answers Corp stop and venturi meter
