Class C Water Operator License Exam Practice
Questions with Solutions Rated A+
Ammonia mixed with chlorine gas creates a - Answer white smoke
The most difficult part of a water distribution operator's job. - Answer furnish a continuous supply
Physical connection between a safe and potentially unsafe water source. - Answer cross connection
A distribution system is a - Answer looped system
Dead end mains should be flushed - Answer every month
Excess nitrate causes a condition called - Answer blue baby syndrome
Water hardness is caused by - Answer calcium and magnesium
Sewer mains should be __ft away from water mains. - Answer 9
Water with a pH less than 7 is considered to be - Answer acidic
Bacti records are kept for ____yrs and chemical records are kept for ___yrs. - Answer 5, 10
Bacti samples have to be returned to the lab within ___hrs of the collection time. - Answer 30
Color in the water supply should be less than _____ units. - Answer 15
Chlorine is ______ times heavier than air. - Answer 2.5
, 90% of underground pipe failures are related to improper - Answer backfill and bedding
The spoil bank should be located at least ___ft away from the ditch. - Answer 2
The following minimum residuals is ______mg/L for free chlorine and ____mg/L for total chlorine. -
Answer .2, .5
Public opinion of the water utility is _______ at a standstill. - Answer never
A bacti sample should be taken every ____ft of pipe. - Answer 1000
The most common collection point for a bacti sample is the water tap _______. - Answer outside the
house
A standpipe is considered ground storage unless it exceeds _____ft above the highest ________. -
Answer 80, service connection
________ protection is the electrochemical method for preventing ________ of metal tanks. - Answer
cathodic, corrosion
The _____ is the only cross connection control method approved by _______. - Answer air gap, tceq
_______ on a pipeline depend on the _____ or coefficient of pipe roughness. - Answer friction loss, c
factor
__________ occurs whenever there is a ______ in the velocity or direction of water flow. - Answer water
hammer, sudden change
The ______ water pressure required by the rules and regulations is ____psi under any and all conditions.
- Answer minimum, 20
Questions with Solutions Rated A+
Ammonia mixed with chlorine gas creates a - Answer white smoke
The most difficult part of a water distribution operator's job. - Answer furnish a continuous supply
Physical connection between a safe and potentially unsafe water source. - Answer cross connection
A distribution system is a - Answer looped system
Dead end mains should be flushed - Answer every month
Excess nitrate causes a condition called - Answer blue baby syndrome
Water hardness is caused by - Answer calcium and magnesium
Sewer mains should be __ft away from water mains. - Answer 9
Water with a pH less than 7 is considered to be - Answer acidic
Bacti records are kept for ____yrs and chemical records are kept for ___yrs. - Answer 5, 10
Bacti samples have to be returned to the lab within ___hrs of the collection time. - Answer 30
Color in the water supply should be less than _____ units. - Answer 15
Chlorine is ______ times heavier than air. - Answer 2.5
, 90% of underground pipe failures are related to improper - Answer backfill and bedding
The spoil bank should be located at least ___ft away from the ditch. - Answer 2
The following minimum residuals is ______mg/L for free chlorine and ____mg/L for total chlorine. -
Answer .2, .5
Public opinion of the water utility is _______ at a standstill. - Answer never
A bacti sample should be taken every ____ft of pipe. - Answer 1000
The most common collection point for a bacti sample is the water tap _______. - Answer outside the
house
A standpipe is considered ground storage unless it exceeds _____ft above the highest ________. -
Answer 80, service connection
________ protection is the electrochemical method for preventing ________ of metal tanks. - Answer
cathodic, corrosion
The _____ is the only cross connection control method approved by _______. - Answer air gap, tceq
_______ on a pipeline depend on the _____ or coefficient of pipe roughness. - Answer friction loss, c
factor
__________ occurs whenever there is a ______ in the velocity or direction of water flow. - Answer water
hammer, sudden change
The ______ water pressure required by the rules and regulations is ____psi under any and all conditions.
- Answer minimum, 20
