CLASS C WATER OPERATOR LICENSE EXAM WITH
110 QUESTIONS & CORRECT ANSWERS
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
110 QUESTIONS & CORRECT ANSWERS
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
