TEXAS WASTE WATER EXAM SCRIPT 2026
REAL EXAM QUESTIONS WITH ACCURATE
SOLUTIONS GRADED A+
◉ Routine weir maintenance should include checking the? Answer:
Volume of the basin
◉ What chemical is used for dechlorination Answer: Sulfur oxide
◉ When a secondary clarifier becomes septic which of the following
should be checked first? Answer: Sludge withdrawal rate
◉ Which form of solids is most difficult to remove in a gravity
treatment process? Answer: Precipitated
◉ In a chemical feed system, which of the following is most likely to
be used? Answer: Rotary lobe
◉ Which of the following is added to bacteriological sample bottles
to remove residual chlorine from a sample? Answer: Sodium
thiosulfate
, ◉ An operator observes a dense and somewhat greasy scummy
layer of deep tan or dark brown foam on the aeration tank. Which of
the following is the most likely explanation for this situation?
Answer: Old mixed liquor solids
◉ A facultative wastewater treatment pond receives domestic waste
with no industrial discharges. Over the last few days, the operator
has noticed an increase in odor and a pinkish color developing in the
ponds. Which of the following is the most likely explanation?
Answer: An anaerobic condition id developing
◉ Which of the following is most important to ensure confidence in
analytical testing results? Answer: Quality control results
◉ The rotation of the shaft is reversed after a three-phase motor has
been repaired. Which of the following actions should be taken?
Answer: Change location of two of the three leads
◉ An operator is most likely to be exposed to which of the following
hazardous gases in plant operation? Answer: Chlorine, hydrogen,
sulfide, oxygen and nitrogen
◉ Which of the following is a common open channel flow measuring
device for waste water Answer: Parshall flume
REAL EXAM QUESTIONS WITH ACCURATE
SOLUTIONS GRADED A+
◉ Routine weir maintenance should include checking the? Answer:
Volume of the basin
◉ What chemical is used for dechlorination Answer: Sulfur oxide
◉ When a secondary clarifier becomes septic which of the following
should be checked first? Answer: Sludge withdrawal rate
◉ Which form of solids is most difficult to remove in a gravity
treatment process? Answer: Precipitated
◉ In a chemical feed system, which of the following is most likely to
be used? Answer: Rotary lobe
◉ Which of the following is added to bacteriological sample bottles
to remove residual chlorine from a sample? Answer: Sodium
thiosulfate
, ◉ An operator observes a dense and somewhat greasy scummy
layer of deep tan or dark brown foam on the aeration tank. Which of
the following is the most likely explanation for this situation?
Answer: Old mixed liquor solids
◉ A facultative wastewater treatment pond receives domestic waste
with no industrial discharges. Over the last few days, the operator
has noticed an increase in odor and a pinkish color developing in the
ponds. Which of the following is the most likely explanation?
Answer: An anaerobic condition id developing
◉ Which of the following is most important to ensure confidence in
analytical testing results? Answer: Quality control results
◉ The rotation of the shaft is reversed after a three-phase motor has
been repaired. Which of the following actions should be taken?
Answer: Change location of two of the three leads
◉ An operator is most likely to be exposed to which of the following
hazardous gases in plant operation? Answer: Chlorine, hydrogen,
sulfide, oxygen and nitrogen
◉ Which of the following is a common open channel flow measuring
device for waste water Answer: Parshall flume
