Water Operator Class 3-Practice Test Questions With
Complete Solutions
.015 mg/L Correct Answers The action level for lead is?
.3 NTU's or lower 95% of the time Correct Answers The MCL
for turbidity is:
.5 and 4 mg/L Correct Answers The minimum chlorine residual
at the end of a line and the maximum chlorine residual allowed
at the end of a line is:
0 ppm Correct Answers Water leaving Zeolite softener has a
hardness of
0.01 ppm Correct Answers MCL for Arsenic
0.015 ppm Correct Answers MCL for Lead
0.06 ppm Correct Answers MCL for HAA5's
0.08 ppm Correct Answers MCL for TTHM's
0.3, 0.05 Correct Answers SMCL for Iron is. For Manganese:
1 ppm Correct Answers What is the desired amount of fluoride
in water?
1 turn Correct Answers A fully open chlorine bottle is how
many turns?
, 10 mg/L Correct Answers The MCL for nitrates is?
10 ppm Correct Answers What is the IDHL level for chlorine
gas?
1000ft Correct Answers Shut-off valve in main lines should be
located ____apart
12 inches Correct Answers A well casing should extend at least
____ above ground level.
12 inches Correct Answers How high should a well casing
extend above ground level?
150 bottle Correct Answers Chlorine repair kit "A" is used for
1974 Correct Answers The SDWA was signed into law
December 19__
2 buffers Correct Answers pH meters must be calibrated using
200 ft Correct Answers Road signs should be no more than
____ apart.
24 inches Correct Answers How high should a vent extend
above ground level?
3 ft Correct Answers A ladder should extend how far above the
structure that it accesses?
Complete Solutions
.015 mg/L Correct Answers The action level for lead is?
.3 NTU's or lower 95% of the time Correct Answers The MCL
for turbidity is:
.5 and 4 mg/L Correct Answers The minimum chlorine residual
at the end of a line and the maximum chlorine residual allowed
at the end of a line is:
0 ppm Correct Answers Water leaving Zeolite softener has a
hardness of
0.01 ppm Correct Answers MCL for Arsenic
0.015 ppm Correct Answers MCL for Lead
0.06 ppm Correct Answers MCL for HAA5's
0.08 ppm Correct Answers MCL for TTHM's
0.3, 0.05 Correct Answers SMCL for Iron is. For Manganese:
1 ppm Correct Answers What is the desired amount of fluoride
in water?
1 turn Correct Answers A fully open chlorine bottle is how
many turns?
, 10 mg/L Correct Answers The MCL for nitrates is?
10 ppm Correct Answers What is the IDHL level for chlorine
gas?
1000ft Correct Answers Shut-off valve in main lines should be
located ____apart
12 inches Correct Answers A well casing should extend at least
____ above ground level.
12 inches Correct Answers How high should a well casing
extend above ground level?
150 bottle Correct Answers Chlorine repair kit "A" is used for
1974 Correct Answers The SDWA was signed into law
December 19__
2 buffers Correct Answers pH meters must be calibrated using
200 ft Correct Answers Road signs should be no more than
____ apart.
24 inches Correct Answers How high should a vent extend
above ground level?
3 ft Correct Answers A ladder should extend how far above the
structure that it accesses?
