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TCEQ CLASS D WATER OPERATOR LICENSE EXAM
NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+|BRAND NEW!!
Destratification is the mixing of lake water by compressed
air to prevent layers of different __________ from
developing. - ANSWER-temperature
All PWS in Texas are required to use ________ as the
final disinfectant. - ANSWER-chlorine
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)
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A restricted zone of ______ ft radius from the raw water
intake must be established and recreational activities and
trespassing shall be prohibited. - ANSWER-200
T/F: The Rio Grande River is the longest river in Texas,
stretching 250 miles along the Mexico border. - ANSWER-
False (1250 miles)
T/F: Filtration is the first step in the removal of suspended
solids. - ANSWER-False (Sedimentation)
Surface water is usually low in ________ and ________. -
ANSWER-minerals / gases
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Chemical dosage, water temperature, pH, _______, and
the characteristics of the raw water all have an effect on
the coagulation process. - ANSWER-mixing
The two pathogenic protozoans resistant to chlorination
are: ________ and _________ - ANSWER-giardia /
cryptosporidium
T/F: Bacteria, algae, and turbidity can be a problem in
surface water as can be municipal, industrial and
agricultural pollution. - ANSWER-True
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T/F: Coagulation works by the bonding of negatively
charged turbidity to positively charged chemical
coagulants. - ANSWER-True
T/F: Turbidity can shelter bacteria from the disinfection
process. - ANSWER-True
_______ is the last treatment step before storage. -
ANSWER-Disinfection
Get the sample to the lab within ___________ or it will be
rejected. - ANSWER-30 hours (for BacT samples)
TCEQ CLASS D WATER OPERATOR LICENSE EXAM
NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+|BRAND NEW!!
Destratification is the mixing of lake water by compressed
air to prevent layers of different __________ from
developing. - ANSWER-temperature
All PWS in Texas are required to use ________ as the
final disinfectant. - ANSWER-chlorine
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)
,2|Page
A restricted zone of ______ ft radius from the raw water
intake must be established and recreational activities and
trespassing shall be prohibited. - ANSWER-200
T/F: The Rio Grande River is the longest river in Texas,
stretching 250 miles along the Mexico border. - ANSWER-
False (1250 miles)
T/F: Filtration is the first step in the removal of suspended
solids. - ANSWER-False (Sedimentation)
Surface water is usually low in ________ and ________. -
ANSWER-minerals / gases
,3|Page
Chemical dosage, water temperature, pH, _______, and
the characteristics of the raw water all have an effect on
the coagulation process. - ANSWER-mixing
The two pathogenic protozoans resistant to chlorination
are: ________ and _________ - ANSWER-giardia /
cryptosporidium
T/F: Bacteria, algae, and turbidity can be a problem in
surface water as can be municipal, industrial and
agricultural pollution. - ANSWER-True
, 4|Page
T/F: Coagulation works by the bonding of negatively
charged turbidity to positively charged chemical
coagulants. - ANSWER-True
T/F: Turbidity can shelter bacteria from the disinfection
process. - ANSWER-True
_______ is the last treatment step before storage. -
ANSWER-Disinfection
Get the sample to the lab within ___________ or it will be
rejected. - ANSWER-30 hours (for BacT samples)
