TCEQ CLASS D WATER OPERATOR
LICENSE TEST EXAM 2026 STUDY
QUESTIONS WITH VERIFIED
ANSWERS 100% GUARANTEED PASS |
RATED A+
Copyright@2026
,TCEQ CLASS D WATER OPERATOR LICENSE TEST EXAM
2026 STUDY QUESTIONS WITH VERIFIED ANSWERS 100%
GUARANTEED PASS | RATED A+
T/F: Powdered activated carbon (PAC) is commonly used to treat iron and manganese. -
Answer>>> False (removes the tastes and odors usually caused by dead and decaying *algae*
and vegetation)
An elevated storage tank should be protected against corrosion by:
a) painting
b) cathodic protection
c) water stabilization
d) all of the above
e) galvanizing - Answer>>> d) all of the above (painting, cathodic protection, and water
stabilization)
Chlorinator rooms must be provided with facilities from determining the amount of disinfectant
used _______ - Answer>>> daily
T/F: Dosage is the amount of chlorine applied in milligrams per liter or parts per billion. -
Answer>>> False (parts per million)
Meter readers bring in operating revenue and profoundly impact _____ relations. - Answer>>>
Public
The casing must extend at least ____ inches above the floor of the pump room or ground surface.
- Answer>>> 18
T/F: Aquifers sandwiched between impermeable layers of rock or clay are called confined
aquifers or artesian aquifers. - Answer>>> True
The federal regulator of drinking water is the _____. - Answer>>> EPA
, T/F: Duties of distribution operator include repairing leaks, making taps, flushing mains, and
taking radiological samples. - Answer>>> False (Repair leaks, Make taps, Flush mains, Operate
pumps, Take *bacteriological* samples)
The drawdown of a well is 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 - Answer>>> b) the difference between the static and pumping level
A common type of oxidant that is used at most SW treatment plants to kill bacteria and to
prevent trihalomethane formation is:
a) total chlorine
b) combined chlorine
c) chlorine dioxide
d) free chlorine
e) ozonation - Answer>>> b) combined chlorine
A service area has 1000 service connections. What can we estimate the population of this service
area to be? - 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. - Answer>>> 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. - Answer>>> False (3 years)
T/F: The physical characteristics of water are color, taste, odor, temperature, and turbidity. -
Answer>>> True
An alkaline or basic solution has a pH greater than ____. - Answer>>> 7
LICENSE TEST EXAM 2026 STUDY
QUESTIONS WITH VERIFIED
ANSWERS 100% GUARANTEED PASS |
RATED A+
Copyright@2026
,TCEQ CLASS D WATER OPERATOR LICENSE TEST EXAM
2026 STUDY QUESTIONS WITH VERIFIED ANSWERS 100%
GUARANTEED PASS | RATED A+
T/F: Powdered activated carbon (PAC) is commonly used to treat iron and manganese. -
Answer>>> False (removes the tastes and odors usually caused by dead and decaying *algae*
and vegetation)
An elevated storage tank should be protected against corrosion by:
a) painting
b) cathodic protection
c) water stabilization
d) all of the above
e) galvanizing - Answer>>> d) all of the above (painting, cathodic protection, and water
stabilization)
Chlorinator rooms must be provided with facilities from determining the amount of disinfectant
used _______ - Answer>>> daily
T/F: Dosage is the amount of chlorine applied in milligrams per liter or parts per billion. -
Answer>>> False (parts per million)
Meter readers bring in operating revenue and profoundly impact _____ relations. - Answer>>>
Public
The casing must extend at least ____ inches above the floor of the pump room or ground surface.
- Answer>>> 18
T/F: Aquifers sandwiched between impermeable layers of rock or clay are called confined
aquifers or artesian aquifers. - Answer>>> True
The federal regulator of drinking water is the _____. - Answer>>> EPA
, T/F: Duties of distribution operator include repairing leaks, making taps, flushing mains, and
taking radiological samples. - Answer>>> False (Repair leaks, Make taps, Flush mains, Operate
pumps, Take *bacteriological* samples)
The drawdown of a well is 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 - Answer>>> b) the difference between the static and pumping level
A common type of oxidant that is used at most SW treatment plants to kill bacteria and to
prevent trihalomethane formation is:
a) total chlorine
b) combined chlorine
c) chlorine dioxide
d) free chlorine
e) ozonation - Answer>>> b) combined chlorine
A service area has 1000 service connections. What can we estimate the population of this service
area to be? - 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. - Answer>>> 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. - Answer>>> False (3 years)
T/F: The physical characteristics of water are color, taste, odor, temperature, and turbidity. -
Answer>>> True
An alkaline or basic solution has a pH greater than ____. - Answer>>> 7
