TCEQ class c water license exam 158 Questions and
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Answers verified 2025 aq aq
State Agency responsince for enforcing the safe drinking water act in Texas
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Texas Commission on environmental Quality
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What minerals can cause water hardness
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Calcium and magnesium aq aq
A public water system must at all times provide
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Adequate quantity of water, pressure, and disinfection
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A source groundwater would be
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aquifer
Fecal coliform organisms sometimes found in water supplies are an indication that
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Water supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in the
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water, water is unsuitable for drinking
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A disease that may be spread by inadequately disinfected water
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Dysentery
A common chemical used in disinfection of small water supply is
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Calcium hypochlorite aq
,A physical connection between a potable water supply and house well would be
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A cross connection
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The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called
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Demand
Which of the following is a physical characteristic of chlorine gas
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Greenish-Yellow Color, heavier than air, pungent penetrating odor, corrosive aq aq aq aq aq aq aq aq
Which of the following would be considered a part of a hypo-chlorinator system
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Solution feed pump aq aq
According to state requirements, all public water Supply wells should be provided with a raised concre
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
te sealing block, screened vents, and-
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A flow measuring device
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Drawdown of a water well is determined by aq aq aq aq aq aq aq
Difference in static and pumping levels aq aq aq aq aq
pH of water indicates
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If it's acidic or basic
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The pH of water is expressed on a pH scale of
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, 0-14
Water that is considered neutral is expressed on the pH scale at
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7.0
Which of the following is a required Step in collecting a routine distribution sample for bacteriological
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
testing?
Use of an approved, sterile sample container
aq aq aq aq aq aq
Sand filtration will remove which of the following from surface water
aq aq aq aq aq aq aq aq aq aq
Turbidity
Activated carbon is used in a surface water plant primarily for
aq aq aq aq aq aq aq aq aq aq
Taste and odor control
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Which or the following chemicals are commonly used as coagulants in surface water treatment
aq aq aq aq aq aq aq aq aq aq aq aq aq
Alum and ferric chloride
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Ground storage tanks are required to provided with which of the following
aq aq aq aq aq aq aq aq aq aq aq
Screened vents, an approved locking roof hatch, an overflow pipe with hinged flap device, annual insp
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
ection and maintenance as needed
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An elevated storage tank should be protected against corrosion by
aq aq aq aq aq aq aq aq aq
Painting, cathodic protection, water stabilization, and only using galvanized and lead based primed co
aq aq aq aq aq aq aq aq aq aq aq aq aq
mponents
aq aq aq aq aq aq aq aq aq
Answers verified 2025 aq aq
State Agency responsince for enforcing the safe drinking water act in Texas
aq aq aq aq aq aq aq aq aq aq aq
Texas Commission on environmental Quality
aq aq aq aq
What minerals can cause water hardness
aq aq aq aq aq
Calcium and magnesium aq aq
A public water system must at all times provide
aq aq aq aq aq aq aq aq
Adequate quantity of water, pressure, and disinfection
aq aq aq aq aq aq
A source groundwater would be
aq aq aq aq
aquifer
Fecal coliform organisms sometimes found in water supplies are an indication that
aq aq aq aq aq aq aq aq aq aq aq
Water supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in the
aq aq aq aq aq aq aq aq aq aq aq aq aq a
water, water is unsuitable for drinking
q aq aq aq aq aq
A disease that may be spread by inadequately disinfected water
aq aq aq aq aq aq aq aq aq
Dysentery
A common chemical used in disinfection of small water supply is
aq aq aq aq aq aq aq aq aq aq
Calcium hypochlorite aq
,A physical connection between a potable water supply and house well would be
aq aq aq aq aq aq aq aq aq aq aq aq
A cross connection
aq aq
The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
Demand
Which of the following is a physical characteristic of chlorine gas
aq aq aq aq aq aq aq aq aq aq
Greenish-Yellow Color, heavier than air, pungent penetrating odor, corrosive aq aq aq aq aq aq aq aq
Which of the following would be considered a part of a hypo-chlorinator system
aq aq aq aq aq aq aq aq aq aq aq aq
Solution feed pump aq aq
According to state requirements, all public water Supply wells should be provided with a raised concre
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
te sealing block, screened vents, and-
aq aq aq aq aq
A flow measuring device
aq aq aq
Drawdown of a water well is determined by aq aq aq aq aq aq aq
Difference in static and pumping levels aq aq aq aq aq
pH of water indicates
aq aq aq
If it's acidic or basic
aq aq aq aq
The pH of water is expressed on a pH scale of
aq aq aq aq aq aq aq aq aq aq
, 0-14
Water that is considered neutral is expressed on the pH scale at
aq aq aq aq aq aq aq aq aq aq aq
7.0
Which of the following is a required Step in collecting a routine distribution sample for bacteriological
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
testing?
Use of an approved, sterile sample container
aq aq aq aq aq aq
Sand filtration will remove which of the following from surface water
aq aq aq aq aq aq aq aq aq aq
Turbidity
Activated carbon is used in a surface water plant primarily for
aq aq aq aq aq aq aq aq aq aq
Taste and odor control
aq aq aq
Which or the following chemicals are commonly used as coagulants in surface water treatment
aq aq aq aq aq aq aq aq aq aq aq aq aq
Alum and ferric chloride
aq aq aq
Ground storage tanks are required to provided with which of the following
aq aq aq aq aq aq aq aq aq aq aq
Screened vents, an approved locking roof hatch, an overflow pipe with hinged flap device, annual insp
aq aq aq aq aq aq aq aq aq aq aq aq aq aq aq
ection and maintenance as needed
aq aq aq aq
An elevated storage tank should be protected against corrosion by
aq aq aq aq aq aq aq aq aq
Painting, cathodic protection, water stabilization, and only using galvanized and lead based primed co
aq aq aq aq aq aq aq aq aq aq aq aq aq
mponents
