Class D Water Operator License Exam with 100% correct
answers
The amount of chlorine in mg/L that is used up by reactions with organics and inorganics is
called:
a) dosage
b) demand
c) total chlorine
d) residual
e) free chlorine
b) demand
A potable water supply:
a) is free of pathogenic organisms
b) has an adequate chlorine residual
c) contains a safe level of chemicals
d) all of the above
e) is found only in community type water systems
d) all of the above
According to state rules, all PWS wells must be provided with concrete sealing slabs, screened
casing vents, raw water sampling taps and:
a) liquid level indicators
b) surge suppressors
,c) flow measuring devices
d) fluoridation injection equipment
e) pressure gauges
c) flow measuring devices
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.
71%
Drought is an extended period when a region receives a deficiency in its ________ water supply.
atmospheric, ground, or surface
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
2,000
,T/F: Only 3% of all the fresh water on earth can be easily accessed for use.
False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking
Water Act from the EPA.
True
T/F: PWS officials should be pro-active in their approach to terrorism.
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.
Rule of Capture
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.
True
"Potable" means water is safe to drink and has a measurable chlorine ________.
Residual
The plant operator is responsible for a sufficient supply of safe and ________ drinking water.
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.
False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ.
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.
answers
The amount of chlorine in mg/L that is used up by reactions with organics and inorganics is
called:
a) dosage
b) demand
c) total chlorine
d) residual
e) free chlorine
b) demand
A potable water supply:
a) is free of pathogenic organisms
b) has an adequate chlorine residual
c) contains a safe level of chemicals
d) all of the above
e) is found only in community type water systems
d) all of the above
According to state rules, all PWS wells must be provided with concrete sealing slabs, screened
casing vents, raw water sampling taps and:
a) liquid level indicators
b) surge suppressors
,c) flow measuring devices
d) fluoridation injection equipment
e) pressure gauges
c) flow measuring devices
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.
71%
Drought is an extended period when a region receives a deficiency in its ________ water supply.
atmospheric, ground, or surface
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
2,000
,T/F: Only 3% of all the fresh water on earth can be easily accessed for use.
False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking
Water Act from the EPA.
True
T/F: PWS officials should be pro-active in their approach to terrorism.
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.
Rule of Capture
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.
True
"Potable" means water is safe to drink and has a measurable chlorine ________.
Residual
The plant operator is responsible for a sufficient supply of safe and ________ drinking water.
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.
False (130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ.
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.
