1|Page
TEXAS GROUNDWATER OPERATOR C LICENSE TEST
2026/2027 BANK EXAM QUESTIONS ACCURATE
ACTUAL EXAM||VERIFIED EXAM!!! FREQUENTLY
TESTED QUESTIONS WITH DETAILED ANSWERS ||
GRADED A+||NEWEST EXAM!!!
The amount of chlorine in mg/L that is used up by reacting
with iron organics of bacteria is called - Answers-Demand
Which of the following is a physical characteristic of
chlorine gas - Answers-Greenish-Yellow Color, heavier
than air, pungent penetrating odor, corrosive
Which of the following would be considered a part of a
hypo-chlorinator system - Answers-Solution feed pump
According to state requirements, all public water Supply
wells should be provided with a raised concrete sealing
block, screened vents, and- - Answers-A flow measuring
device
Drawdown of a water well is determined by - Answers-
Difference in static and pumping levels
,2|Page
pH of water indicates - Answers-If it's acidic or basic
The pH of water is expressed on a pH scale of - Answers-
0-14
Water that is considered neutral is expressed on the pH
scale at - Answers-7.0
Which of the following is a required Step in collecting a
routine distribution sample for bacteriological testing? -
Answers-Use of an approved, sterile sample container
Sand filtration will remove which of the following from
surface water - Answers-Turbidity
Activated carbon is used in a surface water plant primarily
for - Answers-Taste and odor control
Which or the following chemicals are commonly used as
coagulants in surface water treatment - Answers-Alum and
ferric chloride
, 3|Page
Ground storage tanks are required to provided with which
of the following - Answers-Screened vents, an approved
locking roof hatch, an overflow pipe with hinged flap
device, annual inspection and maintenance as needed
An elevated storage tank should be protected against
corrosion by - Answers-Painting, cathodic protection,
water stabilization, and only using galvanized and lead
based primed components
A public water supply system should maintain residual
pressure of 20 psi and a minimum of normal operating
pressure of - Answers-35 psi
Before a new or repaired water line is placed into service,
it must be properly disinfected by providing a chlorine
dosage of _________ and proper detention time -
Answers-50 mg/L
Water bearing formations beneath the earths surface that
are used as a source of water for public water supplies are
- Answers-Aquifers
TEXAS GROUNDWATER OPERATOR C LICENSE TEST
2026/2027 BANK EXAM QUESTIONS ACCURATE
ACTUAL EXAM||VERIFIED EXAM!!! FREQUENTLY
TESTED QUESTIONS WITH DETAILED ANSWERS ||
GRADED A+||NEWEST EXAM!!!
The amount of chlorine in mg/L that is used up by reacting
with iron organics of bacteria is called - Answers-Demand
Which of the following is a physical characteristic of
chlorine gas - Answers-Greenish-Yellow Color, heavier
than air, pungent penetrating odor, corrosive
Which of the following would be considered a part of a
hypo-chlorinator system - Answers-Solution feed pump
According to state requirements, all public water Supply
wells should be provided with a raised concrete sealing
block, screened vents, and- - Answers-A flow measuring
device
Drawdown of a water well is determined by - Answers-
Difference in static and pumping levels
,2|Page
pH of water indicates - Answers-If it's acidic or basic
The pH of water is expressed on a pH scale of - Answers-
0-14
Water that is considered neutral is expressed on the pH
scale at - Answers-7.0
Which of the following is a required Step in collecting a
routine distribution sample for bacteriological testing? -
Answers-Use of an approved, sterile sample container
Sand filtration will remove which of the following from
surface water - Answers-Turbidity
Activated carbon is used in a surface water plant primarily
for - Answers-Taste and odor control
Which or the following chemicals are commonly used as
coagulants in surface water treatment - Answers-Alum and
ferric chloride
, 3|Page
Ground storage tanks are required to provided with which
of the following - Answers-Screened vents, an approved
locking roof hatch, an overflow pipe with hinged flap
device, annual inspection and maintenance as needed
An elevated storage tank should be protected against
corrosion by - Answers-Painting, cathodic protection,
water stabilization, and only using galvanized and lead
based primed components
A public water supply system should maintain residual
pressure of 20 psi and a minimum of normal operating
pressure of - Answers-35 psi
Before a new or repaired water line is placed into service,
it must be properly disinfected by providing a chlorine
dosage of _________ and proper detention time -
Answers-50 mg/L
Water bearing formations beneath the earths surface that
are used as a source of water for public water supplies are
- Answers-Aquifers
