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TCEQ class c water license exam questions and answers 100% pass
Question: What does ammonia mixed with chlorine gas create?
CORRECT ANSWER : white smoke
Question: What is the most difficult part of a water distribution
operator's job?
CORRECT ANSWER : furnish a continuous supply
Question: What is a physical connection between a safe and
potentially unsafe water source?
CORRECT ANSWER : cross connection
Question: What is a distribution system?
CORRECT ANSWER : looped system
Question: How often should dead end mains be flushed?
CORRECT ANSWER : every month
Question: What condition does excess nitrate cause?
CORRECT ANSWER : blue baby syndrome
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Question: What causes water hardness?
CORRECT ANSWER : calcium and magnesium
Question: How far should sewer mains be from water mains?
CORRECT ANSWER : 9
Question: What is water with a pH less than 7 considered to be?
CORRECT ANSWER : acidic
Question: How long are bacti records kept, and how long are
chemical records kept?
CORRECT ANSWER : 5, 10
Question: Within how many hours must bacti samples be
returned to the lab after collection?
CORRECT ANSWER : 30
Question: What should the color in the water supply be less
than?
CORRECT ANSWER : 15
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Question: How many times heavier is chlorine than air?
CORRECT ANSWER : 2.5
Question: What is 90% of underground pipe failures related to?
CORRECT ANSWER : backfill and bedding
Question: How far should the spoil bank be located from the
ditch?
CORRECT ANSWER : 2
Question: What is the minimum residual for free chlorine and
total chlorine?
CORRECT ANSWER : .2, .5
Question: Is public opinion of the water utility ever at a
standstill?
CORRECT ANSWER : never
Question: How often should a bacti sample be taken per length
of pipe?
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CORRECT ANSWER : 1000
Question: Where is the most common collection point for a bacti
sample?
CORRECT ANSWER : outside the house
Question: When is a standpipe considered ground storage?
CORRECT ANSWER : 80, service connection
Question: What is the electrochemical method for preventing
corrosion of metal tanks?
CORRECT ANSWER : cathodic, corrosion
Question: What is the only cross connection control method
approved by TCEQ?