Class D Water Operator License Exam TCEQ Exam || Most
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2027
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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.
ANSWERS: False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ.
ANSWERS: True
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.
ANSWERS: True
Meter readers bring in operating revenue and profoundly impact relations.
ANSWERS: Public
The federal regulator of drinking water is the _.
ANSWERS: EPA
, T/F: Duties of distribution operator include repairing leaks, making taps,
flushing mains, and taking radiological samples.
ANSWERS: 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?
ANSWERS: 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.
ANSWERS: False (must notify before)
T/F: A Class "D" license is valid for 2 years at ground and purchase water
systems with 250 connections or less.
ANSWERS: False (3 years)
T/F: The physical characteristics of water are color, taste, odor,
temperature, and turbidity.
ANSWERS: True
An alkaline or basic solution has a pH greater than ____.
ANSWERS:
7
,T/F: The terms mg/L and ppm are not interchangeable.
ANSWERS: False (they are interchangeable)
Suspended solids in water cannot be filtered out.
ANSWERS: False (they can)
Solids, water hardness, pH and gases are characteristics.
ANSWERS: Chemical
T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule.
ANSWERS: True
T/F: The State recommends a water pH of less than 7 to be maintained at all time.
ANSWERS: False (The state recommends a pH slightly greater than 7 and for the
water to be non- corrosive.)
T/F: Taste and odor can come from organisms such as vegetation, bacteria, and
algae, and from certain chemicals and metals.
ANSWERS: True
T/F: The deeper the well, the warmer the water.
ANSWERS: True
, T/F: The threshold odor number (TON) relates to the number of dilutions needed
for the water to be tasteless.
ANSWERS: False (It reflects the number of dilutions needed for water sample to
be odorless)
One part per million or 1 mg/L means that for every pounds of water there is
one
pound of material in it.
ANSWERS: 1 million
The State requires filtered water to be equal to or less than turbidity units in at
least
95% of the monthly samples.
ANSWERS: 0.3
The State recommends a TON of ___ or less.
ANSWERS: 3
T/F: The State recommends 20 color units or less for a quality water.
ANSWERS: False (The state recommends 15 units of color or less for drinking
water.)
Recent Exam Actual Complete Real Exam
Questions And Correct Answers (Verified
Answers) Already Graded A+ || Guaranteed
Success!! Newest Exam | Just Released!! 2026-
2027
\
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.
ANSWERS: False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ.
ANSWERS: True
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.
ANSWERS: True
Meter readers bring in operating revenue and profoundly impact relations.
ANSWERS: Public
The federal regulator of drinking water is the _.
ANSWERS: EPA
, T/F: Duties of distribution operator include repairing leaks, making taps,
flushing mains, and taking radiological samples.
ANSWERS: 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?
ANSWERS: 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.
ANSWERS: False (must notify before)
T/F: A Class "D" license is valid for 2 years at ground and purchase water
systems with 250 connections or less.
ANSWERS: False (3 years)
T/F: The physical characteristics of water are color, taste, odor,
temperature, and turbidity.
ANSWERS: True
An alkaline or basic solution has a pH greater than ____.
ANSWERS:
7
,T/F: The terms mg/L and ppm are not interchangeable.
ANSWERS: False (they are interchangeable)
Suspended solids in water cannot be filtered out.
ANSWERS: False (they can)
Solids, water hardness, pH and gases are characteristics.
ANSWERS: Chemical
T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule.
ANSWERS: True
T/F: The State recommends a water pH of less than 7 to be maintained at all time.
ANSWERS: False (The state recommends a pH slightly greater than 7 and for the
water to be non- corrosive.)
T/F: Taste and odor can come from organisms such as vegetation, bacteria, and
algae, and from certain chemicals and metals.
ANSWERS: True
T/F: The deeper the well, the warmer the water.
ANSWERS: True
, T/F: The threshold odor number (TON) relates to the number of dilutions needed
for the water to be tasteless.
ANSWERS: False (It reflects the number of dilutions needed for water sample to
be odorless)
One part per million or 1 mg/L means that for every pounds of water there is
one
pound of material in it.
ANSWERS: 1 million
The State requires filtered water to be equal to or less than turbidity units in at
least
95% of the monthly samples.
ANSWERS: 0.3
The State recommends a TON of ___ or less.
ANSWERS: 3
T/F: The State recommends 20 color units or less for a quality water.
ANSWERS: False (The state recommends 15 units of color or less for drinking
water.)
