age 1 of 45
TCEQ Class D Water Operators License FINAL EXAM
STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS || 100%
GUARANTEED PASS <RECENT VERSION>
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 .....Answer.......b) demand
A potable water supply:
,age 2 of 45
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
.....Answer.......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
,age 3 of 45
d) fluoridation injection equipment
e) pressure gauges .....Answer.......c) flow measuring devices
T/F: In Texas, about 75% of all water is used for commercial,
industrial, or agricultural purposes. .....Answer.......True
Water covers approximately ________ of Earth's surface.
.....Answer.......71%
Drought is an extended period when a region receives a
deficiency in its ________ water supply.
.....Answer.......atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used
for drinking and cooking .....Answer.......True
, age 4 of 45
Excluding outside water use, the average household uses about
_______ gallons of water per month for inside use
.....Answer.......2,000
T/F: Only 3% of all the fresh water on earth can be easily
accessed for use. .....Answer.......False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed
primacy over the Safe Drinking Water Act from the EPA.
.....Answer.......True
T/F: PWS officials should be pro-active in their approach to
terrorism. .....Answer.......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. .....Answer.......Rule of Capture
TCEQ Class D Water Operators License FINAL EXAM
STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS || 100%
GUARANTEED PASS <RECENT VERSION>
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 .....Answer.......b) demand
A potable water supply:
,age 2 of 45
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
.....Answer.......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
,age 3 of 45
d) fluoridation injection equipment
e) pressure gauges .....Answer.......c) flow measuring devices
T/F: In Texas, about 75% of all water is used for commercial,
industrial, or agricultural purposes. .....Answer.......True
Water covers approximately ________ of Earth's surface.
.....Answer.......71%
Drought is an extended period when a region receives a
deficiency in its ________ water supply.
.....Answer.......atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used
for drinking and cooking .....Answer.......True
, age 4 of 45
Excluding outside water use, the average household uses about
_______ gallons of water per month for inside use
.....Answer.......2,000
T/F: Only 3% of all the fresh water on earth can be easily
accessed for use. .....Answer.......False (only 1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed
primacy over the Safe Drinking Water Act from the EPA.
.....Answer.......True
T/F: PWS officials should be pro-active in their approach to
terrorism. .....Answer.......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. .....Answer.......Rule of Capture
