TCEQ class c water license exam 158 Questions and Answers verified 2025.

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
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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
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testing?

Use of an approved, sterile sample container
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Sand filtration will remove which of the following from surface water
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Turbidity




Activated carbon is used in a surface water plant primarily for
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Taste and odor control
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Which or the following chemicals are commonly used as coagulants in surface water treatment
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Alum and ferric chloride
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Ground storage tanks are required to provided with which of the following
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Screened vents, an approved locking roof hatch, an overflow pipe with hinged flap device, annual insp
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ection and maintenance as needed
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An elevated storage tank should be protected against corrosion by
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Painting, cathodic protection, water stabilization, and only using galvanized and lead based primed co
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mponents