TCEQ Class C Water Operator License Exam (Latest 2025/2026 Update) Questions with Verified Answers | 100% Correct| Graded A.

TCEQ Class C Water Operator License
Exam (Latest 2025/2026 Update)
Questions with Verified Answers |
100% Correct| Graded A.

Question:
Sand filtration will remove which of the following from surface water?
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Answer:
Turbidity




Question:

Activated carbon is used in a surface water plant primarily for?
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Answer:

Taste and odor control
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Question:
Which or the following chemicals are commonly used as coagulants in
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surface water treatment?
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Answer:
Alum and ferric chloride
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,Question:

Ground storage tanks are required to provided with which of the
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following?
Answer:

Screened vents, an approved locking roof hatch, an overflow pipe with
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hinged flap device, annual inspection and maintenance as needed
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Question:

An elevated storage tank should be protected against corrosion by?
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Answer:

Painting, cathodic protection, water stabilization, and only using
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galvanized and lead based primed components i,- i,- i,- i,- i,-




Question:

A public water supply system should maintain residual pressure of 20 psi
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and a minimum of normal operating pressure of?
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Answer:

35 psi i,-

,Question:
Before a new or repaired water line is placed into service, it must be
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properly disinfected by providing a chlorine dosage of _________ and
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proper detention time? i,- i,-




Answer:

50 mg/L
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Question:
Water bearing formations beneath the earths surface that are used as a
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source of water for public water supplies are?
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Answer:

Aquifers




Question:

The purpose of an air line on a well is?
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Answer:

Determine Water leves in the well i,- i,- i,- i,- i,-




Question:

The mesh size is an important feature of a well screen because properly
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sized openings should?
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, Answer:
Reduce the amount of Sand pumped
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Question:

When treating surface Water, the process of coagularon will be most
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affected by the? i,- i,-




Answer:

pH, alkalinity, temperature, and chemical Dosage
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Question:
State Agency responsince for enforcing the safe drinking water act in
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Texas?

Answer:

Texas Commission on environmental Quality
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Question:

What minerals can cause water hardness?
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Answer:
Calcium and magnesium i,- i,-