10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
TCEQ Class D Water operator license Exam
(2025) UPDATE Verified Questions And Answers |
With 100% Correct Answers graded A+
Guaranteed Success!!
Save
Terms in this set (394)
Permits owner of a well to pump as much water as
Rule of capture desired, even if water is drained from beneath the
land of others
when treating surface all of the above
water, the process of
coagulation will be
affected by
a public water system is all of the above
responsible for providing
a common type of oxidant combined chlorine
that is used at most
surface water treatment
plants to kill bacteria and
to prevent trihalomethane
formation is
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 1/78
,10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
Which of the following is a use a sterilized bottles containing sodium thiosulfate
required step in collecting
a routine distribution
sample of microbiological
analysis
The purpose of an airline
on a well is
which minerals cause calcium and magnesium
water hardness
Before a new main is 25 mg/L
placed into service, it must
be properly disinfected
with a minimum chlorine
dosage of:
a) 50 mg/L
b) 30 mg/L
c) 40 mg/L
d) 75 mg/L
e) 25 mg/L
A disease which may be Hepatitis A
spread by inadequately
disinfected water is
A physical connection cross connection
between a potable water
supply and non-potable
water source is
underground geological aquifers
water bearing formations
that are used for public
water supplies are called
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 2/78
,10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
Gravity filters will remove turbidity
which of the following
from surface water
supplies:
a) turbidity
b) taste and odors
c) nitrates
d) hardness
e) chlorides
Activated carbon is used taste and odor control
at a surface water
treatment plant primarily
for
Which of the following is
part of a hyperchlorination
system
A common chemical used
for disinfecting a small
public water supply is
Your ground storage tank 79270
is 15 feet high and 30 feet
in diameter. About how
much water can it hold?
a) 31,700 gallons
b) 79,270 gallons
c) 50, 490 gallons
d) 25,150 gallons
e) 10,600 gallons
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 3/78
, 10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
If you added 3.5 mg/L of 2.3
chlorine to your storage
tank and 30 minutes later
measured the residual at
1.2 mg/L, what was the
chlorine demand in the
tank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
which of the following aluminum sulfate
chemicals is commonly
used as a coagulant in
surface water treatment
The drawdown of a well is the difference between static and pumping level
determined by:
a) a properly installed air
line
b) the difference between
the static and pumping
level
c) a psi gage calibrated in
feet of water
d) a tape measure
e) an electronic sounder
you are setting your 21 ppd
chlorinator to feed a
dosage of 5.0 mg/L. If
your daily water pumpage
is 500,000 gallons, the gas
chlorinator should be set
at how many pounds per
day
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 4/78
TCEQ Class D Water operator license Exam
(2025) UPDATE Verified Questions And Answers |
With 100% Correct Answers graded A+
Guaranteed Success!!
Save
Terms in this set (394)
Permits owner of a well to pump as much water as
Rule of capture desired, even if water is drained from beneath the
land of others
when treating surface all of the above
water, the process of
coagulation will be
affected by
a public water system is all of the above
responsible for providing
a common type of oxidant combined chlorine
that is used at most
surface water treatment
plants to kill bacteria and
to prevent trihalomethane
formation is
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 1/78
,10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
Which of the following is a use a sterilized bottles containing sodium thiosulfate
required step in collecting
a routine distribution
sample of microbiological
analysis
The purpose of an airline
on a well is
which minerals cause calcium and magnesium
water hardness
Before a new main is 25 mg/L
placed into service, it must
be properly disinfected
with a minimum chlorine
dosage of:
a) 50 mg/L
b) 30 mg/L
c) 40 mg/L
d) 75 mg/L
e) 25 mg/L
A disease which may be Hepatitis A
spread by inadequately
disinfected water is
A physical connection cross connection
between a potable water
supply and non-potable
water source is
underground geological aquifers
water bearing formations
that are used for public
water supplies are called
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 2/78
,10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
Gravity filters will remove turbidity
which of the following
from surface water
supplies:
a) turbidity
b) taste and odors
c) nitrates
d) hardness
e) chlorides
Activated carbon is used taste and odor control
at a surface water
treatment plant primarily
for
Which of the following is
part of a hyperchlorination
system
A common chemical used
for disinfecting a small
public water supply is
Your ground storage tank 79270
is 15 feet high and 30 feet
in diameter. About how
much water can it hold?
a) 31,700 gallons
b) 79,270 gallons
c) 50, 490 gallons
d) 25,150 gallons
e) 10,600 gallons
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 3/78
, 10/22/25, 8:50 AM TCEQ Class D Water operator license Exam (2025) UPDATE Verified Questions And Answers | With 100% Correct Answers grade…
If you added 3.5 mg/L of 2.3
chlorine to your storage
tank and 30 minutes later
measured the residual at
1.2 mg/L, what was the
chlorine demand in the
tank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7
which of the following aluminum sulfate
chemicals is commonly
used as a coagulant in
surface water treatment
The drawdown of a well is the difference between static and pumping level
determined by:
a) a properly installed air
line
b) the difference between
the static and pumping
level
c) a psi gage calibrated in
feet of water
d) a tape measure
e) an electronic sounder
you are setting your 21 ppd
chlorinator to feed a
dosage of 5.0 mg/L. If
your daily water pumpage
is 500,000 gallons, the gas
chlorinator should be set
at how many pounds per
day
https://quizlet.com/1096691945/tceq-class-d-water-operator-license-exam-2025-update-verified-questions-and-answers-with-100-correct-answers-gr… 4/78
