Class D Water Operation License Exam TCEQ with Questions and Answers –
100% Solved
_______ is the last treatment step before storage. - ✔✔✔-Disinfection
_________ 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. - ✔✔✔-Rule of Capture
"Potable" means water is safe to drink and has a measurable chlorine ________. - ✔✔✔-
Residual
A BacT sample, taken from a newly constructed well, on ____ consecutive days, must show
negative results. - ✔✔✔-3
A certain group of bacteria is used to indicate the possible presence of a pathogen--- the
________ group. - ✔✔✔-Coliform
A common chemical used for disinfecting a small public water supply is:
a) soda ash
b) copper sulfate
c) sodium hypochlorite
d) fluoride
e) sodium chloride - ✔✔✔-c) sodium hypochlorite
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
,Class D Water Operation License Exam TCEQ with Questions and Answers –
100% Solved
e) ozonation - ✔✔✔-b) combined chlorine
A confined space entry team consists of a supervisor, an attendant, and an authorized
_________. - ✔✔✔-entrant
A full-face self-contained breathing apparatus or supplied air respirator must be readily
accessible outside the fire station when chlorine gas is used. - ✔✔✔-False (A full-face self-
contained breathing apparatus (SCBA) or supplied air respirator that meets OSHA standards
shall be readily accessible outside the *chlorinator room* when chlorine gas is used.)
A good safety program should have management leadership, employee participation, hazard
identification, training, and ____________. - ✔✔✔-equipment
A potable water supply:
a) is free of pathogenic organisms
b) has an adequate chlorine residual
c) contains a safe level of chemicals
d) all of the above
e) is found only in community type water systems - ✔✔✔-d) all of the above
A PWS is responsible for providing:
a) potable water
b) adequate water pressure
c) an adequate quantity of water
d) all of the above
e) soft water - ✔✔✔-d) all of the above
, Class D Water Operation License Exam TCEQ with Questions and Answers –
100% Solved
A restricted zone of ______ ft radius from the raw water intake must be established and
recreational activities and trespassing shall be prohibited. - ✔✔✔-200
A service area has 1000 service connections. What can we estimate the population of this
service area to be? - ✔✔✔-3,000 (multiply connections x 3)
A well drilled into a water table aquifer is usually a ______ well. - ✔✔✔-Shallow
Abandoned wells, not plugged, within ___ mile of a proposed well site must be reported to
TCEQ. - ✔✔✔-1/4
According to state rules, all PWS wells must be provided with concrete sealing slabs, screened
casing vents, raw water sampling taps and:
a) liquid level indicators
b) surge suppressors
c) flow measuring devices
d) fluoridation injection equipment
e) pressure gauges - ✔✔✔-c) flow measuring devices
All PWS in Texas are required to use ________ as the final disinfectant. - ✔✔✔-chlorine
An alkaline or basic solution has a pH greater than ____. - ✔✔✔-7
An elevated storage tank should be protected against corrosion by:
a) painting
b) cathodic protection
c) water stabilization
100% Solved
_______ is the last treatment step before storage. - ✔✔✔-Disinfection
_________ 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. - ✔✔✔-Rule of Capture
"Potable" means water is safe to drink and has a measurable chlorine ________. - ✔✔✔-
Residual
A BacT sample, taken from a newly constructed well, on ____ consecutive days, must show
negative results. - ✔✔✔-3
A certain group of bacteria is used to indicate the possible presence of a pathogen--- the
________ group. - ✔✔✔-Coliform
A common chemical used for disinfecting a small public water supply is:
a) soda ash
b) copper sulfate
c) sodium hypochlorite
d) fluoride
e) sodium chloride - ✔✔✔-c) sodium hypochlorite
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
,Class D Water Operation License Exam TCEQ with Questions and Answers –
100% Solved
e) ozonation - ✔✔✔-b) combined chlorine
A confined space entry team consists of a supervisor, an attendant, and an authorized
_________. - ✔✔✔-entrant
A full-face self-contained breathing apparatus or supplied air respirator must be readily
accessible outside the fire station when chlorine gas is used. - ✔✔✔-False (A full-face self-
contained breathing apparatus (SCBA) or supplied air respirator that meets OSHA standards
shall be readily accessible outside the *chlorinator room* when chlorine gas is used.)
A good safety program should have management leadership, employee participation, hazard
identification, training, and ____________. - ✔✔✔-equipment
A potable water supply:
a) is free of pathogenic organisms
b) has an adequate chlorine residual
c) contains a safe level of chemicals
d) all of the above
e) is found only in community type water systems - ✔✔✔-d) all of the above
A PWS is responsible for providing:
a) potable water
b) adequate water pressure
c) an adequate quantity of water
d) all of the above
e) soft water - ✔✔✔-d) all of the above
, Class D Water Operation License Exam TCEQ with Questions and Answers –
100% Solved
A restricted zone of ______ ft radius from the raw water intake must be established and
recreational activities and trespassing shall be prohibited. - ✔✔✔-200
A service area has 1000 service connections. What can we estimate the population of this
service area to be? - ✔✔✔-3,000 (multiply connections x 3)
A well drilled into a water table aquifer is usually a ______ well. - ✔✔✔-Shallow
Abandoned wells, not plugged, within ___ mile of a proposed well site must be reported to
TCEQ. - ✔✔✔-1/4
According to state rules, all PWS wells must be provided with concrete sealing slabs, screened
casing vents, raw water sampling taps and:
a) liquid level indicators
b) surge suppressors
c) flow measuring devices
d) fluoridation injection equipment
e) pressure gauges - ✔✔✔-c) flow measuring devices
All PWS in Texas are required to use ________ as the final disinfectant. - ✔✔✔-chlorine
An alkaline or basic solution has a pH greater than ____. - ✔✔✔-7
An elevated storage tank should be protected against corrosion by:
a) painting
b) cathodic protection
c) water stabilization
