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TCEQ CLASS C WATER OPERATOR LICENSE
EXAM NEWEST 2024-2025 ACTUAL EXAM
COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Which of the following is an acceptable disinfection residual at
the far reaches of the distribution System - CORRECT
ANSWER-0.2 mg/L free chlorine residual, 0.8 mg/L chloramine
residual when using chloramine treatment, 0.5 mg/L chloramine
for surface water supply, 0.5 mg/L free chlorine residual for
ground water Supply
What is the approximate total volume of a circular tank in
gallons, if it is 30 feet in diameter, and 15 feet deep -
CORRECT ANSWER-79,300 gallons
You are using a chlorinator to provine a dosage of 4.0 mg/L. If
the daily Water usage is 750,000 gallons, the gas chlorinator
feed rate should be set at ____________ pounds per day. -
CORRECT ANSWER-25
One gallon of water weighs - CORRECT ANSWER-8.34 lbs.
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One foot of water inside a storage vessel will raise a pressure
gauge at the bottom of the vessel by - CORRECT ANSWER-
0.433 lbs. (1 ft. Water creates 0.433 psi of pressure)
A raw water intake structure may not be constructed with
___________ feet of a boat ramp, dock, or marina - CORRECT
ANSWER-1,000 feet
Common types of pumps for use in water wells are - CORRECT
ANSWER-Vertical turbine and submersible
_________ is the natural exchange of water between the earth
and air - CORRECT ANSWER-The hydraulic cycle
If and when a health hazard contamination event occurs in a
public water System, the operator must contact the state
regulatory authority within __________ hours by telephone -
CORRECT ANSWER-24 hours
Potable water is that of - CORRECT ANSWER-Maintained at
adequate pressure, pathogen free, and contains a chlorine
residual
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Excessive nitrates in drinking water can care a condition that
affects infants under the age of 6 months, this condition known
as - CORRECT ANSWER-Blue baby
In surface water treatment the process of causing the fine
particles in water to join together to form larger heavier particles
that settle in a clarifier is called - CORRECT ANSWER-
Coagulation
The test commonly used to determine the chemical dosage for
the surface water plants is the _______ test - CORRECT
ANSWER-Jar
Suspended solids are the solids portion that - CORRECT
ANSWER-Cause mudballs and filter plugging
A public Water system is required to take samples of water for
bacteriological analysis. The organism that is used as an
indicator is - CORRECT ANSWER-Coliform
Chisine dosage is demand plus desired - CORRECT ANSWER-
Residual
TCEQ CLASS C WATER OPERATOR LICENSE
EXAM NEWEST 2024-2025 ACTUAL EXAM
COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
Which of the following is an acceptable disinfection residual at
the far reaches of the distribution System - CORRECT
ANSWER-0.2 mg/L free chlorine residual, 0.8 mg/L chloramine
residual when using chloramine treatment, 0.5 mg/L chloramine
for surface water supply, 0.5 mg/L free chlorine residual for
ground water Supply
What is the approximate total volume of a circular tank in
gallons, if it is 30 feet in diameter, and 15 feet deep -
CORRECT ANSWER-79,300 gallons
You are using a chlorinator to provine a dosage of 4.0 mg/L. If
the daily Water usage is 750,000 gallons, the gas chlorinator
feed rate should be set at ____________ pounds per day. -
CORRECT ANSWER-25
One gallon of water weighs - CORRECT ANSWER-8.34 lbs.
,2|Page
One foot of water inside a storage vessel will raise a pressure
gauge at the bottom of the vessel by - CORRECT ANSWER-
0.433 lbs. (1 ft. Water creates 0.433 psi of pressure)
A raw water intake structure may not be constructed with
___________ feet of a boat ramp, dock, or marina - CORRECT
ANSWER-1,000 feet
Common types of pumps for use in water wells are - CORRECT
ANSWER-Vertical turbine and submersible
_________ is the natural exchange of water between the earth
and air - CORRECT ANSWER-The hydraulic cycle
If and when a health hazard contamination event occurs in a
public water System, the operator must contact the state
regulatory authority within __________ hours by telephone -
CORRECT ANSWER-24 hours
Potable water is that of - CORRECT ANSWER-Maintained at
adequate pressure, pathogen free, and contains a chlorine
residual
, 3|Page
Excessive nitrates in drinking water can care a condition that
affects infants under the age of 6 months, this condition known
as - CORRECT ANSWER-Blue baby
In surface water treatment the process of causing the fine
particles in water to join together to form larger heavier particles
that settle in a clarifier is called - CORRECT ANSWER-
Coagulation
The test commonly used to determine the chemical dosage for
the surface water plants is the _______ test - CORRECT
ANSWER-Jar
Suspended solids are the solids portion that - CORRECT
ANSWER-Cause mudballs and filter plugging
A public Water system is required to take samples of water for
bacteriological analysis. The organism that is used as an
indicator is - CORRECT ANSWER-Coliform
Chisine dosage is demand plus desired - CORRECT ANSWER-
Residual
