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