TEXAS CLASS D WATER LICENSE EXAM
ACTUAL TEST PAPER WITH FULL SOLVED
QUESTIONS AND CORRECT ANSWERS
GRADED A PLUS
◉ 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
ACTUAL TEST PAPER WITH FULL SOLVED
QUESTIONS AND CORRECT ANSWERS
GRADED A PLUS
◉ 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
