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BASIC WATER WORKS OPERATIONS FINAL EXAM – TCEQ
QUESTIONS AND CORRECT ANSWERS 2026 NEWEST VERSION
The most superior chemical in oxidizing taste, odor, color,
iron,manganese, or organics in water is?
Ozone
Water systems are required to have a storage capacity of how
many gallons per connection?
200
What psi is created by 1 foot column of water?
0.433
Which pump type is the most commonly used by the water
utilities industry?
Centrifugal
What is the percentage of oxygen in normal air?
20.9
, 2
What is the number 1 cause of death in confined spaces?
Lack of oxygen
All excavations deeper that how many feet require cave-in
protection?
5
A rectangular storage tank is 40 feet long,25 feet wide, and 10
feet deep. What is the volume in cubic feet? And how many
gallons the tank will hold when full?
10000/74800
A clarifier is 60 feet in diameter and 12 feet deep.
What is the volume in cubic feet? And what is volume in
gallons when full?
33912/253661
A sedimentation tank is 75 feet long,35 feet wide and 15 feet
deep.
What is the detention time in hours at a flow rate of 2 mgd?
3.5
BASIC WATER WORKS OPERATIONS FINAL EXAM – TCEQ
QUESTIONS AND CORRECT ANSWERS 2026 NEWEST VERSION
The most superior chemical in oxidizing taste, odor, color,
iron,manganese, or organics in water is?
Ozone
Water systems are required to have a storage capacity of how
many gallons per connection?
200
What psi is created by 1 foot column of water?
0.433
Which pump type is the most commonly used by the water
utilities industry?
Centrifugal
What is the percentage of oxygen in normal air?
20.9
, 2
What is the number 1 cause of death in confined spaces?
Lack of oxygen
All excavations deeper that how many feet require cave-in
protection?
5
A rectangular storage tank is 40 feet long,25 feet wide, and 10
feet deep. What is the volume in cubic feet? And how many
gallons the tank will hold when full?
10000/74800
A clarifier is 60 feet in diameter and 12 feet deep.
What is the volume in cubic feet? And what is volume in
gallons when full?
33912/253661
A sedimentation tank is 75 feet long,35 feet wide and 15 feet
deep.
What is the detention time in hours at a flow rate of 2 mgd?
3.5
