6/11/25, 11:28 AM TCEQ class c water license exam
TCEQ CLASS C WATER LICENSE ACTUAL EXAM 2025-2026
\ NEWEST VERSION WITH COMPLETE QUESTIONS AND
ACCURATE DETAILED ANSWERS \VERIFIED 100%
\ALREADY GRADED A+
According to the lead and 8.0%
copper rule, pipe and
fittings may not contain
more than
_ __ lead or solder and flux
may not
contain more than 0.2% lead
When testing for chlorine Red
residual DPD is
used as an indicator, when
DPD is added to Water
containing Chlorine what
loser does the sample turn
Most commonly used valves Gate valve
for isolating a water leak is
the
In the distribution system Water hammer
when a valve or hydrant is
opened or closed too fast it
could result in a
The most commonly used Centrifugal
pump in the distribution
system is
You are treating 21 MGD 14,583 gallons per minute
water in a surface Water
plant, how many gallons per
/ 1/19
,6/11/25, 11:28 AM TCEQ class c water license exam
minute is this?
A class D certified Operator 250
can operate a public water
system up to _________
connections
All state of Texas operator 3
licenses after issue are
good for ______ years
After analyzing monthly Collect another sample at the site that tested positive plus
bacteriological samples the one within 5 customers upstream and one within 5
operator is notified that one customers downstream and re-submit
testing point, tested
positive. The operator
should-
Any excavation greater than 5 feet
____________________ feet in
depth requires the use of
OSHA approved shoring
equipment or sloping of
walls to prevent cave -ins
- Callfor assistance and wait
If an operator discovers a
- put on self contained breathing apparatus and attach lifeline
Chlorine on a 150 lb.
- once assistance arrives- enter the room and shut off
Cylinder inside a room
the valve on the cylinder and wait for exhaust fan to
he/she should
immediately- evacuate the chlorine from the room
Waterlines should be 9
installed no closer than
_______ feet to any
sewer lines or
other possible contaminate
lines
166 feet
At the base of an elevated
storage tank a pressure
gauge reads 72 psi how far
above is the gauge is the
water surface
/ 2/19
, 6/11/25, 11:28 AM TCEQ class c water license exam
7,315 gallons
How many gallons of water
will a storage tank that is
978 cubic feet hold?
Calcium hypochlorite (HTH) is 65%-75%
used as a disinfectant in
small systems, what
percentage chorine is this
material typically?
A certified operator doing - Immediately notify TCEQ Regional office and they will
their routine notify law enforcement and investigate to determine
daily checks of wells,
if there is a danger or threat to public health and
pumps, and storage
safety
facilities discovers a cut
- pull the electrical disconnect on the pumps and close
lock on the entry gate,
valves isolating the tank until it can be analyzed
there is also a cut lock on
the roof
hatch to the storage tank
and suspicious looking
containers lying on the
ground that do not belong.
What should the Operator
do?
When calculating area one will 3.1416
use the standard for pi what
is the standard
numerical value for pi?
Flushing dead-end mains - Once every month
current state regulations
require that all public
water Systems flush dead-
end mains to assure
chlorine residual and water
quality. What is the
minimum flushing
requirement?
/ 3/19
TCEQ CLASS C WATER LICENSE ACTUAL EXAM 2025-2026
\ NEWEST VERSION WITH COMPLETE QUESTIONS AND
ACCURATE DETAILED ANSWERS \VERIFIED 100%
\ALREADY GRADED A+
According to the lead and 8.0%
copper rule, pipe and
fittings may not contain
more than
_ __ lead or solder and flux
may not
contain more than 0.2% lead
When testing for chlorine Red
residual DPD is
used as an indicator, when
DPD is added to Water
containing Chlorine what
loser does the sample turn
Most commonly used valves Gate valve
for isolating a water leak is
the
In the distribution system Water hammer
when a valve or hydrant is
opened or closed too fast it
could result in a
The most commonly used Centrifugal
pump in the distribution
system is
You are treating 21 MGD 14,583 gallons per minute
water in a surface Water
plant, how many gallons per
/ 1/19
,6/11/25, 11:28 AM TCEQ class c water license exam
minute is this?
A class D certified Operator 250
can operate a public water
system up to _________
connections
All state of Texas operator 3
licenses after issue are
good for ______ years
After analyzing monthly Collect another sample at the site that tested positive plus
bacteriological samples the one within 5 customers upstream and one within 5
operator is notified that one customers downstream and re-submit
testing point, tested
positive. The operator
should-
Any excavation greater than 5 feet
____________________ feet in
depth requires the use of
OSHA approved shoring
equipment or sloping of
walls to prevent cave -ins
- Callfor assistance and wait
If an operator discovers a
- put on self contained breathing apparatus and attach lifeline
Chlorine on a 150 lb.
- once assistance arrives- enter the room and shut off
Cylinder inside a room
the valve on the cylinder and wait for exhaust fan to
he/she should
immediately- evacuate the chlorine from the room
Waterlines should be 9
installed no closer than
_______ feet to any
sewer lines or
other possible contaminate
lines
166 feet
At the base of an elevated
storage tank a pressure
gauge reads 72 psi how far
above is the gauge is the
water surface
/ 2/19
, 6/11/25, 11:28 AM TCEQ class c water license exam
7,315 gallons
How many gallons of water
will a storage tank that is
978 cubic feet hold?
Calcium hypochlorite (HTH) is 65%-75%
used as a disinfectant in
small systems, what
percentage chorine is this
material typically?
A certified operator doing - Immediately notify TCEQ Regional office and they will
their routine notify law enforcement and investigate to determine
daily checks of wells,
if there is a danger or threat to public health and
pumps, and storage
safety
facilities discovers a cut
- pull the electrical disconnect on the pumps and close
lock on the entry gate,
valves isolating the tank until it can be analyzed
there is also a cut lock on
the roof
hatch to the storage tank
and suspicious looking
containers lying on the
ground that do not belong.
What should the Operator
do?
When calculating area one will 3.1416
use the standard for pi what
is the standard
numerical value for pi?
Flushing dead-end mains - Once every month
current state regulations
require that all public
water Systems flush dead-
end mains to assure
chlorine residual and water
quality. What is the
minimum flushing
requirement?
/ 3/19
