Download Class D Water Operator License Exam TCEQ (100 out of 100) GRADED A and more Exams Nursing in PDF only on Docsity! Class D Water Operator License Exam
TCEQ (100 out of 100) GRADED A
2024 Update
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. True
Water covers approximately of Earth's surface.
Drought is an extended period when a region receives a deficiency in its water supply.
T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking True
Excluding outside water use, the average household uses about gallons of water per month for
inside use
T/F: Only 3% of all the fresh water on earth can be easily accessed for use. False
T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking Water Act
from the EPA.
T/F: PWS officials should be pro-active in their approach to terrorism.
permits the owner of a well to pump as much water as desired, even if the water is drained
from beneath the land of others.
In Texas, agricultural water demand accounts for about __% of the total water used. 57%
T/F: An example of a non-transient non-community PWS is a rural school. True
Monitoring average and maximum daily water enables us to plan ahead for growth. Demand
T/F: The Safe Drinking Water Act sets standards for drinking water including physical, chemical,
bacteriological, and radiological characteristics.
"Potable" means water is safe to drink and has a measurable chlorine : Residual
Solids, water hardness, pH and gases are characteristics.
T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule. True
T/F: The State recommends a water pH of less than 7 to be maintained at all time.
T/F: Taste and odor can come from organisms such as vegetation, bacteria, and algae, and from certain
chemicals and metals.
T/F: The deeper the well, the warmer the water.
T/F: The threshold odor number (TON) relates to the number of dilutions needed for the water to be
tasteless.
One part per million or 1 mg/L means that for every pounds of water there is one pound of
material in it.
The State requires filtered water to be equal to or less than turbidity units in at least 95% of the
monthly samples.
The State recommends a TON of ___ or less.
T/F: The State recommends 20 color units or less for a quality water.
T/F: Examples of inorganic matter found in water include rock, sand, metals, and minerals. True
T/F: The red color caused by iron is an example of suspended or apparent color and it can be removed by
filtration.
Excessive calcium and are the primary cause of hardness in water.
T/F: The State recommends a maximum total dissolved solids content of 500 mg/L False
There are 3 common gases found in water: methane, carbon dioxide, and
T/F: Turbidity must be limited because it shelters and nourishes bacteria and interferes with disinfection.
T/F: Bleach or alcohol require less contact time than flaming to disinfect a faucet. False
T/F: The "primary limits" refer to chemicals with maximum contaminant levels that can be exceeded.
T/F: The term "total coliform" means fecal and non-fecal coliform.
T/F: Pathogens are disease-causing microorganisms.
If a routine sample is positive, flush the positive sample point, check the chlorine residual, then resample
within 24 days of notification.
