1|Page
New Jersey Water Treatment Operator Exam (T-
4)||Verified Exam!!!|| Questions with Correct Answers
and explanations LATEST THIS YEAR -JUST
RELEASED.pdf||NEWEST EXAM!!!
which type of valve would be particularly useful for
throttling the flow of corrosive liquids - Answer-pinch valve
Water meter pits are usually used in - Answer-cold
climates
fuel oil will permeate which type of pipe - Answer-
polyethylene pipe
An ion exchange softener is treating a flow rate of 125
gpm. what is the operating time in hours if the softener unit
treats 297000 gallons before it requires regeneration? -
Answer-39.6 hr
in describing pump operation what type of curve shows
the relationship between power and capacity - Answer-P-
Q curve
,2|Page
What is Head Loss - Answer-energy used by water when
moving from point to point
Static Suction Lift - Answer-Difference in water placement
What is Power - Answer-Work done in a given time
if a water system collects at least 40 samples per month
for the analyses of total coliforms, what percentage of total
coliform samples are acceptable for the system to remain
in compliance with the maximum contaminant level for
total coliforms - Answer-no more than 5%
water systems are required to achieve at least________
removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination by
surface water runoff and a point downstream before or at
the first customer. - Answer-4 log
where are the sampling points located for required
samplings of organics (except THMs) in a community
water system - Answer-entry points to the distribution
system
,3|Page
where are the sampling points located for required
sampling of natural radionuclides in a community water
system - Answer-each entry point to the system
continuous chlorine residual monitoring is required where
the water enters the distribution system under the SWTR
when the - Answer-population served is >3300 people.
which disinfectant would work best against
Cryptosporidium - Answer-Ozone
The pH of a Water sample Is greater than the PHs so the
Langlier index - Answer-indicates the water is scale
forming
When water high in calcium bicarbonate is softened by ion
exchange - Answer-Sodium Bicarbonate remains in the
product water
A bypass valve would be used with a - Answer-gate valve
, 4|Page
Where ground frost is expected the riser pipes in a meter
pit should be atleast how far away from any wall of the
meter box to prevent freezing - Answer-1-2 inches
which type of pipe joint is available in both bolted and bolt
less flexible pipe joint designs - Answer-Ball and Socket
Joint
which type of pipe joint permits flexible pipe alignment is
inexpensive to manufacture and is easy to assemble -
Answer-push on joint
new polyvinyl chloride pipe has a c-value of about -
Answer-150+
a community water system must post the consumer
confidence report on a publicly accessible website if it
serves more than - Answer-100000 people
public water systems that cannot meet the required
removal of TOCs can comply if the source water TOC level
is ________ calculated quarterly as a running annual
average - Answer-<2.0 mg/L
New Jersey Water Treatment Operator Exam (T-
4)||Verified Exam!!!|| Questions with Correct Answers
and explanations LATEST THIS YEAR -JUST
RELEASED.pdf||NEWEST EXAM!!!
which type of valve would be particularly useful for
throttling the flow of corrosive liquids - Answer-pinch valve
Water meter pits are usually used in - Answer-cold
climates
fuel oil will permeate which type of pipe - Answer-
polyethylene pipe
An ion exchange softener is treating a flow rate of 125
gpm. what is the operating time in hours if the softener unit
treats 297000 gallons before it requires regeneration? -
Answer-39.6 hr
in describing pump operation what type of curve shows
the relationship between power and capacity - Answer-P-
Q curve
,2|Page
What is Head Loss - Answer-energy used by water when
moving from point to point
Static Suction Lift - Answer-Difference in water placement
What is Power - Answer-Work done in a given time
if a water system collects at least 40 samples per month
for the analyses of total coliforms, what percentage of total
coliform samples are acceptable for the system to remain
in compliance with the maximum contaminant level for
total coliforms - Answer-no more than 5%
water systems are required to achieve at least________
removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination by
surface water runoff and a point downstream before or at
the first customer. - Answer-4 log
where are the sampling points located for required
samplings of organics (except THMs) in a community
water system - Answer-entry points to the distribution
system
,3|Page
where are the sampling points located for required
sampling of natural radionuclides in a community water
system - Answer-each entry point to the system
continuous chlorine residual monitoring is required where
the water enters the distribution system under the SWTR
when the - Answer-population served is >3300 people.
which disinfectant would work best against
Cryptosporidium - Answer-Ozone
The pH of a Water sample Is greater than the PHs so the
Langlier index - Answer-indicates the water is scale
forming
When water high in calcium bicarbonate is softened by ion
exchange - Answer-Sodium Bicarbonate remains in the
product water
A bypass valve would be used with a - Answer-gate valve
, 4|Page
Where ground frost is expected the riser pipes in a meter
pit should be atleast how far away from any wall of the
meter box to prevent freezing - Answer-1-2 inches
which type of pipe joint is available in both bolted and bolt
less flexible pipe joint designs - Answer-Ball and Socket
Joint
which type of pipe joint permits flexible pipe alignment is
inexpensive to manufacture and is easy to assemble -
Answer-push on joint
new polyvinyl chloride pipe has a c-value of about -
Answer-150+
a community water system must post the consumer
confidence report on a publicly accessible website if it
serves more than - Answer-100000 people
public water systems that cannot meet the required
removal of TOCs can comply if the source water TOC level
is ________ calculated quarterly as a running annual
average - Answer-<2.0 mg/L
