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CLASS D WATER OPERATOR LICENSE
EXAM TCEQ 2025 UPDATED ACTUAL
EXAM WITH CORRECT SOLUTIONS.
T/F: In Texas, about 75% of all water is used for commercial,
industrial, or agricultural purposes. - correct answer- True
Water covers approximately ________ of Earth's surface. -
correct answer- 71%
Drought is an extended period when a region receives a
deficiency in its ________ water supply. - correct answer-
atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used for
drinking and cooking - correct answer- True
Excluding outside water use, the average household uses
about _______ gallons of water per month for inside use -
correct answer- 2,000
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T/F: Only 3% of all the fresh water on earth can be easily
accessed for use. - correct answer- False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed
primacy over the Safe Drinking Water Act from the EPA. -
correct answer- True
T/F: PWS officials should be pro-active in their approach to
terrorism. - correct answer- True
_________ permits the owner of a well to pump as much water
as desired, even if the water is drained from beneath the land
of others. - correct answer- Rule of Capture
In Texas, agricultural water demand accounts for about ___%
of the total water used. - correct answer- 57%
T/F: An example of a non-transient non-community PWS is a
rural school. - correct answer- True
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Monitoring average and maximum daily water ______ enables
us to plan ahead for growth. - correct answer- Demand
T/F: The Safe Drinking Water Act sets standards for drinking
water including physical, chemical, bacteriological, and
radiological characteristics. - correct answer- True
"Potable" means water is safe to drink and has a measurable
chlorine ________. - correct answer- Residual
The plant operator is responsible for a sufficient supply of safe
and ________ drinking water. - correct answer- Palatable
T/F: The Texas State Board of Fire Insurance requires utilities
that provide fire protection to have a minimum amount of water
available based on 30 gals per person per day. - correct
answer- False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ. -
correct answer- True
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T/F: All community and non-transient non-community PWS,
regardless of source of water, must be under the supervision of
a licensed water works operator. - correct answer- True
Meter readers bring in operating revenue and profoundly
impact _____ relations. - correct answer- Public
The federal regulator of drinking water is the _____. - correct
answer- EPA
T/F: Duties of distribution operator include repairing leaks,
making taps, flushing mains, and taking radiological samples. -
correct answer- False (Repair leaks, Make taps, Flush mains,
Operate pumps, Take *bacteriological* samples)
A service area has 1000 service connections. What can we
estimate the population of this service area to be? - correct
answer- 3,000 (multiply connections x 3)
T/F: The State must be notified after an existing facility is
changed or after construction of a new facility. - correct answer-
False (must notify *before*)
CLASS D WATER OPERATOR LICENSE
EXAM TCEQ 2025 UPDATED ACTUAL
EXAM WITH CORRECT SOLUTIONS.
T/F: In Texas, about 75% of all water is used for commercial,
industrial, or agricultural purposes. - correct answer- True
Water covers approximately ________ of Earth's surface. -
correct answer- 71%
Drought is an extended period when a region receives a
deficiency in its ________ water supply. - correct answer-
atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used for
drinking and cooking - correct answer- True
Excluding outside water use, the average household uses
about _______ gallons of water per month for inside use -
correct answer- 2,000
,2 | Page
T/F: Only 3% of all the fresh water on earth can be easily
accessed for use. - correct answer- False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed
primacy over the Safe Drinking Water Act from the EPA. -
correct answer- True
T/F: PWS officials should be pro-active in their approach to
terrorism. - correct answer- True
_________ permits the owner of a well to pump as much water
as desired, even if the water is drained from beneath the land
of others. - correct answer- Rule of Capture
In Texas, agricultural water demand accounts for about ___%
of the total water used. - correct answer- 57%
T/F: An example of a non-transient non-community PWS is a
rural school. - correct answer- True
,3 | Page
Monitoring average and maximum daily water ______ enables
us to plan ahead for growth. - correct answer- Demand
T/F: The Safe Drinking Water Act sets standards for drinking
water including physical, chemical, bacteriological, and
radiological characteristics. - correct answer- True
"Potable" means water is safe to drink and has a measurable
chlorine ________. - correct answer- Residual
The plant operator is responsible for a sufficient supply of safe
and ________ drinking water. - correct answer- Palatable
T/F: The Texas State Board of Fire Insurance requires utilities
that provide fire protection to have a minimum amount of water
available based on 30 gals per person per day. - correct
answer- False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ. -
correct answer- True
, 4 | Page
T/F: All community and non-transient non-community PWS,
regardless of source of water, must be under the supervision of
a licensed water works operator. - correct answer- True
Meter readers bring in operating revenue and profoundly
impact _____ relations. - correct answer- Public
The federal regulator of drinking water is the _____. - correct
answer- EPA
T/F: Duties of distribution operator include repairing leaks,
making taps, flushing mains, and taking radiological samples. -
correct answer- False (Repair leaks, Make taps, Flush mains,
Operate pumps, Take *bacteriological* samples)
A service area has 1000 service connections. What can we
estimate the population of this service area to be? - correct
answer- 3,000 (multiply connections x 3)
T/F: The State must be notified after an existing facility is
changed or after construction of a new facility. - correct answer-
False (must notify *before*)
