TCEQ class c water license EXAM STUDY
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<LATEST VERSION>
A non permit confined space by OSHA standards means a confined space that- -
ANSWER Does not contain or have the potential to contain any hazard capable of
causing death
Examples of non-community (non-transient) water systems include- - ANSWER
Highway rest areas, RV park, Service stations, Hotel/Motel
An employee without a breathing apparatus is in a room where chlorine gas
suddenly begins leaking. What should the employee do first? - ANSWER Keep
mouth closed, keep head as high as possible, and quickly walk out of the room,
holding his breath if possible.
Waterworks operators holding grade C certificates are required to renew their
certificates every three years and to: - ANSWER inform TCEQ of any address
changes.
What responsibility does an operator with a C license have? - ANSWER Keep up
with renewal criteria, and notification of address change.
The major responsibility of a certified waterworks operator is to- - ANSWER
Insure that a safe and adequate supply of drinking water is delivered to the
customers tap.
,What is the proper way to flow test and check pressure? - ANSWER Fire hydrant.
At what PH does water become considered acidic? - ANSWER 5.5
Which pH measurements would indicate that water is basic- - ANSWER 8.3
a pH reading of 6.0 in raw water indicates that the sample is what? - ANSWER
Acidic
If any organic matter is added during repair or installation? - ANSWER Detreated
cl2
The rules and regulations for Public Water Systems states that minimum pressures
in all water distribution systems must not be less than 20psi and that normal
operating pressures must not be less than- - ANSWER 35psi
TCEQ rules require that water systems maintain a minimum of ____ psi
throughout the distribution system under normal operating conditions and shall not
be less than ___ psi in emergencies - ANSWER 35/20
Maintaining the minimum of operating pressure in the distribution system helps
prevent - ANSWER Cross Connection
Customer complaints
Waterborne Diseases
Backflow contamination
Air in the distribution system
,What should you do when your water well starts to produce red colored water? -
ANSWER Filter/Aeration
What contaminant could not be found in ground water? - ANSWER Malaria
TCEQ the best cross connection as what? - ANSWER Physical Air Gap
What pressure does TCEQ say your well should not drop below? - ANSWER 20
PSI
What is a valves primary purpose? - ANSWER To isolate small areas for repair
What operating pressure does TCEQ say your well should run at? - ANSWER 35
PSI
What is the level of a well called during pumping? - ANSWER Well pumping
level
You have a standpipe and the water level inside is at 114ft. What is the psi at the
base of the standpipe? - ANSWER About 49psi
What could happen when you have 2 wells pumping that overlap each other? -
ANSWER If the cones of depression for two or more wells overlap, there is said to
be well interference. This interference reduces the water available/ specific
capacity to each of the wells.
Operators have a startup/shutdown process for the chlorination room. If your
chlorine room is enclosed what should you so first? - ANSWER Forced air vent
Test for leaks
, You're in the chlorine room and a leak is detected. What should you do? -
ANSWER hold your breath your head up high and walk out slowly
The Safe Drinking Water Act structures what water characteristics? - ANSWER
Physical, Chemical,MicroBiological, radiological- All that apply
If you are to put a water main back in service sooner than normal. What do you
need to do about the residual? - ANSWER Disinfection and Flushing. Increase
concentration
What is it called after your well has made contact with organic material and free
chlorine is left over? - ANSWER Residual Chlorine
Your system has had the MCL (Maximum Contaminant Level). Who is
responsible for issuing a boil water notice? - ANSWER PWS (Public Water
System)
You take a bacteriological sample and it comes back positive. Your system
requires you take more than one sample a month. What is required? - ANSWER
One sample from positive point. Take one repeat from sample within five
connections upstream and downstream and in the same day. If only one sample
point, take repeat samples on four consecutive days or collect them from the same
tap.
Who are you responsible to notify after MCL (Maximum Contaminant Level) in
the water system is reached? - ANSWER TCEQ
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<LATEST VERSION>
A non permit confined space by OSHA standards means a confined space that- -
ANSWER Does not contain or have the potential to contain any hazard capable of
causing death
Examples of non-community (non-transient) water systems include- - ANSWER
Highway rest areas, RV park, Service stations, Hotel/Motel
An employee without a breathing apparatus is in a room where chlorine gas
suddenly begins leaking. What should the employee do first? - ANSWER Keep
mouth closed, keep head as high as possible, and quickly walk out of the room,
holding his breath if possible.
Waterworks operators holding grade C certificates are required to renew their
certificates every three years and to: - ANSWER inform TCEQ of any address
changes.
What responsibility does an operator with a C license have? - ANSWER Keep up
with renewal criteria, and notification of address change.
The major responsibility of a certified waterworks operator is to- - ANSWER
Insure that a safe and adequate supply of drinking water is delivered to the
customers tap.
,What is the proper way to flow test and check pressure? - ANSWER Fire hydrant.
At what PH does water become considered acidic? - ANSWER 5.5
Which pH measurements would indicate that water is basic- - ANSWER 8.3
a pH reading of 6.0 in raw water indicates that the sample is what? - ANSWER
Acidic
If any organic matter is added during repair or installation? - ANSWER Detreated
cl2
The rules and regulations for Public Water Systems states that minimum pressures
in all water distribution systems must not be less than 20psi and that normal
operating pressures must not be less than- - ANSWER 35psi
TCEQ rules require that water systems maintain a minimum of ____ psi
throughout the distribution system under normal operating conditions and shall not
be less than ___ psi in emergencies - ANSWER 35/20
Maintaining the minimum of operating pressure in the distribution system helps
prevent - ANSWER Cross Connection
Customer complaints
Waterborne Diseases
Backflow contamination
Air in the distribution system
,What should you do when your water well starts to produce red colored water? -
ANSWER Filter/Aeration
What contaminant could not be found in ground water? - ANSWER Malaria
TCEQ the best cross connection as what? - ANSWER Physical Air Gap
What pressure does TCEQ say your well should not drop below? - ANSWER 20
PSI
What is a valves primary purpose? - ANSWER To isolate small areas for repair
What operating pressure does TCEQ say your well should run at? - ANSWER 35
PSI
What is the level of a well called during pumping? - ANSWER Well pumping
level
You have a standpipe and the water level inside is at 114ft. What is the psi at the
base of the standpipe? - ANSWER About 49psi
What could happen when you have 2 wells pumping that overlap each other? -
ANSWER If the cones of depression for two or more wells overlap, there is said to
be well interference. This interference reduces the water available/ specific
capacity to each of the wells.
Operators have a startup/shutdown process for the chlorination room. If your
chlorine room is enclosed what should you so first? - ANSWER Forced air vent
Test for leaks
, You're in the chlorine room and a leak is detected. What should you do? -
ANSWER hold your breath your head up high and walk out slowly
The Safe Drinking Water Act structures what water characteristics? - ANSWER
Physical, Chemical,MicroBiological, radiological- All that apply
If you are to put a water main back in service sooner than normal. What do you
need to do about the residual? - ANSWER Disinfection and Flushing. Increase
concentration
What is it called after your well has made contact with organic material and free
chlorine is left over? - ANSWER Residual Chlorine
Your system has had the MCL (Maximum Contaminant Level). Who is
responsible for issuing a boil water notice? - ANSWER PWS (Public Water
System)
You take a bacteriological sample and it comes back positive. Your system
requires you take more than one sample a month. What is required? - ANSWER
One sample from positive point. Take one repeat from sample within five
connections upstream and downstream and in the same day. If only one sample
point, take repeat samples on four consecutive days or collect them from the same
tap.
Who are you responsible to notify after MCL (Maximum Contaminant Level) in
the water system is reached? - ANSWER TCEQ
