TCEQ CLASS C WATER OPERATOR LICENSE EXAM NEWEST 2024-2025 ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED ANSWERS
State Agency responsince for enforcing the safe drinking water act in Texas - (answer) Texas
Commission on environmental Quality
What minerals can cause water hardness - (answer) Calcium and magnesium
A public water system must at all times provide - (answer) Adequate quantity of water, pressure, and
disinfection
A source groundwater would be - (answer) aquifer
Fecal coliform organisms sometimes found in water supplies are an indication that - (answer) Water
supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in the water,
water is unsuitable for drinking
A disease that may be spread by inadequately disinfected water - (answer) Dysentery
A common chemical used in disinfection of small water supply is - (answer) Calcium hypochlorite
A physical connection between a potable water supply and house well would be - (answer) A cross
connection
The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called -
(answer) Demand
Which of the following is a physical characteristic of chlorine gas - (answer) Greenish-Yellow Color,
heavier than air, pungent penetrating odor, corrosive
Which of the following would be considered a part of a hypo-chlorinator system - (answer) Solution
feed pump
, TCEQ CLASS C WATER OPERATOR LICENSE EXAM NEWEST 2024-2025 ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED ANSWERS
According to state requirements, all public water Supply wells should be provided with a raised concrete
sealing block, screened vents, and- - (answer) A flow measuring device
Drawdown of a water well is determined by - (answer) Difference in static and pumping levels
pH of water indicates - (answer) If it's acidic or basic
The pH of water is expressed on a pH scale of - (answer) 0-14
Water that is considered neutral is expressed on the pH scale at - (answer) 7.0
Which of the following is a required Step in collecting a routine distribution sample for bacteriological
testing? - (answer) Use of an approved, sterile sample container
Sand filtration will remove which of the following from surface water - (answer) Turbidity
Activated carbon is used in a surface water plant primarily for - (answer) Taste and odor control
Which or the following chemicals are commonly used as coagulants in surface water treatment -
(answer) Alum and ferric chloride
Ground storage tanks are required to provided with which of the following - (answer) Screened vents,
an approved locking roof hatch, an overflow pipe with hinged flap device, annual inspection and
maintenance as needed
An elevated storage tank should be protected against corrosion by - (answer) Painting, cathodic
protection, water stabilization, and only using galvanized and lead based primed components
A public water supply system should maintain residual pressure of 20 psi and a minimum of normal
operating pressure of - (answer) 35 psi
QUESTIONS AND CORRECT DETAILED ANSWERS
State Agency responsince for enforcing the safe drinking water act in Texas - (answer) Texas
Commission on environmental Quality
What minerals can cause water hardness - (answer) Calcium and magnesium
A public water system must at all times provide - (answer) Adequate quantity of water, pressure, and
disinfection
A source groundwater would be - (answer) aquifer
Fecal coliform organisms sometimes found in water supplies are an indication that - (answer) Water
supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in the water,
water is unsuitable for drinking
A disease that may be spread by inadequately disinfected water - (answer) Dysentery
A common chemical used in disinfection of small water supply is - (answer) Calcium hypochlorite
A physical connection between a potable water supply and house well would be - (answer) A cross
connection
The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called -
(answer) Demand
Which of the following is a physical characteristic of chlorine gas - (answer) Greenish-Yellow Color,
heavier than air, pungent penetrating odor, corrosive
Which of the following would be considered a part of a hypo-chlorinator system - (answer) Solution
feed pump
, TCEQ CLASS C WATER OPERATOR LICENSE EXAM NEWEST 2024-2025 ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED ANSWERS
According to state requirements, all public water Supply wells should be provided with a raised concrete
sealing block, screened vents, and- - (answer) A flow measuring device
Drawdown of a water well is determined by - (answer) Difference in static and pumping levels
pH of water indicates - (answer) If it's acidic or basic
The pH of water is expressed on a pH scale of - (answer) 0-14
Water that is considered neutral is expressed on the pH scale at - (answer) 7.0
Which of the following is a required Step in collecting a routine distribution sample for bacteriological
testing? - (answer) Use of an approved, sterile sample container
Sand filtration will remove which of the following from surface water - (answer) Turbidity
Activated carbon is used in a surface water plant primarily for - (answer) Taste and odor control
Which or the following chemicals are commonly used as coagulants in surface water treatment -
(answer) Alum and ferric chloride
Ground storage tanks are required to provided with which of the following - (answer) Screened vents,
an approved locking roof hatch, an overflow pipe with hinged flap device, annual inspection and
maintenance as needed
An elevated storage tank should be protected against corrosion by - (answer) Painting, cathodic
protection, water stabilization, and only using galvanized and lead based primed components
A public water supply system should maintain residual pressure of 20 psi and a minimum of normal
operating pressure of - (answer) 35 psi
