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Class D Water Operator License Exam TCEQ with Questions & Answers.
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Class D Water Operator License Exam TCEQ with Questions & Answers.
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Class D Water Operator License Exam TCEQ withQuestions & Answers
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. -
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(correct answer) -True
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Water covers approximately ________ of Earth's surface. - (correct answer) -71%
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Drought is an extended period when a region receives a deficiency in its ________ water supply. -
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(correct answer) -atmospheric, ground, or surface
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T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking - (correct answer)
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-True
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Excluding outside water use, the average household uses about _______ gallons of water per month for
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inside use - (correct answer) -2,000
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T/F: Only 3% of all the fresh water on earth can be easily accessed for use. - (correct answer) -False
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(only 1%)
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T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking Water Act
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from the EPA. - (correct answer) -True
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T/F: PWS officials should be pro-active in their approach to terrorism. - (correct answer) -True
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_________ permits the owner of a well to pump as much water as desired, even if the water is drained
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from beneath the land of others. - (correct answer) -Rule of Capture
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In Texas, agricultural water demand accounts for about ___% of the total water used. - (correct answer)
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-57%
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T/F: An example of a non-transient non-community PWS is a rural school. - (correct answer) -True
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Monitoring average and maximum daily water ______ enables us to plan ahead for growth. - (correct
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answer) -Demand
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T/F: The Safe Drinking Water Act sets standards for drinking water including physical, chemical,
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bacteriological, and radiological characteristics. - (correct answer) -True
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"Potable" means water is safe to drink and has a measurable chlorine ________. - (correct answer) -
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Residual
The plant operator is responsible for a sufficient supply of safe and ________ drinking water. - (correct
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answer) -Palatable
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T/F: The Texas State Board of Fire Insurance requires utilities that provide fire protection to have a
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minimum amount of water available based on 30 gals per person per day. - (correct answer) -False
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(130 gals per person per day)
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, T/F: The primary state regulator of water utilities is the TCEQ. - (correct answer) -True
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T/F: All community and non-transient non-community PWS, regardless of source of water, must be
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under the supervision of a licensed water works operator. - (correct answer) -True
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Meter readers bring in operating revenue and profoundly impact _____ relations. - (correct answer) -
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Public
The federal regulator of drinking water is the _____. - (correct answer) -EPA
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T/F: Duties of distribution operator include repairing leaks, making taps, flushing mains, and taking
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radiological samples. - (correct answer) -False (Repair leaks, Make taps, Flush mains, Operate pumps,
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Take *bacteriological* samples)
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A service area has 1000 service connections. What can we estimate the population of this service area
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to be? - (correct answer) -3,000 (multiply connections x 3)
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T/F: The State must be notified after an existing facility is changed or after construction of a new
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facility. - (correct answer) -False (must notify *before*)
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T/F: A Class "D" license is valid for 2 years at ground and purchase water systems with 250 connections
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or less. - (correct answer) -False (3 years)
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T/F: The physical characteristics of water are color, taste, odor, temperature, and turbidity. - (correct
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answer) -True
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An alkaline or basic solution has a pH greater than ____. - (correct answer) -7
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T/F: The terms mg/L and ppm are not interchangeable. - (correct answer) -False (they are
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interchangeable)
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Suspended solids in water cannot be filtered out. - (correct answer) -False (they can)
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Solids, water hardness, pH and gases are ____ characteristics. - (correct answer) -Chemical
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T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule. - (correct answer) -True
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T/F: The State recommends a water pH of less than 7 to be maintained at all time. - (correct answer) -
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False (The state recommends a pH slightly greater than 7 and for the water to be non-corrosive.)
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T/F: Taste and odor can come from organisms such as vegetation, bacteria, and algae, and from certain
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chemicals and metals. - (correct answer) -True
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T/F: The deeper the well, the warmer the water. - (correct answer) -True
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T/F: The threshold odor number (TON) relates to the number of dilutions needed for the water to be
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tasteless. - (correct answer) -False (It reflects the number of dilutions needed for water sample to be
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*odorless*)
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One part per million or 1 mg/L means that for every ____ pounds of water there is one pound of
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material in it. - (correct answer) -1 million
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The State requires filtered water to be equal to or less than ____ turbidity units in at least 95% of the
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monthly samples. - (correct answer) -0.3
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