TCEQ class c water license exam Newest 2026-2027 Actual
Exam With Complete Questions And Correct Detailed
Answers (Verified Answers) |Already Graded A+
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 - CORRECT
ANSWER-35/20
Maintaining the minimum of operating pressure in the distribution
system helps prevent - CORRECT ANSWER-Cross Connection
Customer complaints
Waterborne Diseases
Backflow contamination
Air in the distribution system
The purpose of water mains is- - CORRECT ANSWER-To transport
water throughout the system
To provide water for fire protection
To reduce the number of private wells within a providers service area
To insure customers have a water source.
All of the above
pg. 1
,It is recommended that all underground main line valves be operated at
least- - CORRECT ANSWER-Yearly/Annually
If an operator enters a well house and hears a noise coming from the
pump that sounds like pinging or gravel being pumped; more than likely
the pump has- - CORRECT ANSWER-Cavitation
If 2 towers are connected in your system what valve would be best used?
- CORRECT ANSWER-Altitude
An altitude valve is used to- - CORRECT ANSWER-Control the water
elevation in an elevated storage tank.
Two pressure gauges at the foot of two storage tanks are at the same
elevation. The water levels in the two tanks are the same, but tank X
holds 1,000,000 gallons of water and tank Y holds 500,000 gallons. The
gauge on tank X will have a reading of- - CORRECT ANSWER-The
same as that of tank Y
From the center line of pump outlet to the highest pumping altitude is
considered- - CORRECT ANSWER-Head
What is an approved TCEQ method to prevent cross connection? -
CORRECT ANSWER-Air Gap
pg. 2
,what is the only approved method for cross-connection control? -
CORRECT ANSWER-an air gap
After installation or repair of a water line it should be treated with- -
CORRECT ANSWER-50mg/L of chlorine for 24hrs
When you install a new line what is the proper procedure to put in
service? - CORRECT ANSWER-Pressure test, flush, chlorinate, flush,
sample
When a section of water main is replaced, any organic material allowed
to remain inside the pipe will- - CORRECT ANSWER-Increase chlorine
demand, and decrease chlorine residual.
What can cause pump vibration? - CORRECT ANSWER-Misalignment
What is the best way to prolong this life of a centrifugal pump? -
CORRECT ANSWER-Power and sizing
What is the best thing to do for digging in soil type C? - CORRECT
ANSWER-1.5:1 slope
pg. 3
, The indicator organisms used to determine contamination of drinking
water are? - CORRECT ANSWER-Coliform group
When operating valves you don't want to operate to fast closing or
opening why? - CORRECT ANSWER-Because of water hammer.
What is the main cause of line breaks? - CORRECT ANSWER-
Improper bedding and back fill.
What is it called when cl2 is used in the system? - CORRECT
ANSWER-Demand
The difference between the amount of chlorine added to water and the
amount of residual chlorine at the end of a specified contact time is
called what? - CORRECT ANSWER-Chlorine demand
The most common use of chlorine in water treatment is what? -
CORRECT ANSWER-Disinfectant
A pump may be damaged if it started with the discharge valve closed,
and the pump is a(n)- - CORRECT ANSWER-positive displacement
pump
Velocity of flow in water mains is usually expressed in terms of- -
CORRECT ANSWER-Feet per second
pg. 4
Exam With Complete Questions And Correct Detailed
Answers (Verified Answers) |Already Graded A+
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 - CORRECT
ANSWER-35/20
Maintaining the minimum of operating pressure in the distribution
system helps prevent - CORRECT ANSWER-Cross Connection
Customer complaints
Waterborne Diseases
Backflow contamination
Air in the distribution system
The purpose of water mains is- - CORRECT ANSWER-To transport
water throughout the system
To provide water for fire protection
To reduce the number of private wells within a providers service area
To insure customers have a water source.
All of the above
pg. 1
,It is recommended that all underground main line valves be operated at
least- - CORRECT ANSWER-Yearly/Annually
If an operator enters a well house and hears a noise coming from the
pump that sounds like pinging or gravel being pumped; more than likely
the pump has- - CORRECT ANSWER-Cavitation
If 2 towers are connected in your system what valve would be best used?
- CORRECT ANSWER-Altitude
An altitude valve is used to- - CORRECT ANSWER-Control the water
elevation in an elevated storage tank.
Two pressure gauges at the foot of two storage tanks are at the same
elevation. The water levels in the two tanks are the same, but tank X
holds 1,000,000 gallons of water and tank Y holds 500,000 gallons. The
gauge on tank X will have a reading of- - CORRECT ANSWER-The
same as that of tank Y
From the center line of pump outlet to the highest pumping altitude is
considered- - CORRECT ANSWER-Head
What is an approved TCEQ method to prevent cross connection? -
CORRECT ANSWER-Air Gap
pg. 2
,what is the only approved method for cross-connection control? -
CORRECT ANSWER-an air gap
After installation or repair of a water line it should be treated with- -
CORRECT ANSWER-50mg/L of chlorine for 24hrs
When you install a new line what is the proper procedure to put in
service? - CORRECT ANSWER-Pressure test, flush, chlorinate, flush,
sample
When a section of water main is replaced, any organic material allowed
to remain inside the pipe will- - CORRECT ANSWER-Increase chlorine
demand, and decrease chlorine residual.
What can cause pump vibration? - CORRECT ANSWER-Misalignment
What is the best way to prolong this life of a centrifugal pump? -
CORRECT ANSWER-Power and sizing
What is the best thing to do for digging in soil type C? - CORRECT
ANSWER-1.5:1 slope
pg. 3
, The indicator organisms used to determine contamination of drinking
water are? - CORRECT ANSWER-Coliform group
When operating valves you don't want to operate to fast closing or
opening why? - CORRECT ANSWER-Because of water hammer.
What is the main cause of line breaks? - CORRECT ANSWER-
Improper bedding and back fill.
What is it called when cl2 is used in the system? - CORRECT
ANSWER-Demand
The difference between the amount of chlorine added to water and the
amount of residual chlorine at the end of a specified contact time is
called what? - CORRECT ANSWER-Chlorine demand
The most common use of chlorine in water treatment is what? -
CORRECT ANSWER-Disinfectant
A pump may be damaged if it started with the discharge valve closed,
and the pump is a(n)- - CORRECT ANSWER-positive displacement
pump
Velocity of flow in water mains is usually expressed in terms of- -
CORRECT ANSWER-Feet per second
pg. 4
