TCEQ class c water license Exam Prep 2024-
2025 Guide
1. State Agency responsince for enforcing the safe Texas Commission on environ-
drinking water act in Texas mental Quality
2. What minerals can cause water hardness Calcium and magnesium
3. A public water system must at all times provide Adequate quantity of water,
pressure, and disinfection
4. A source groundwater would be aquifer
5. Fecal coliform organisms sometimes found in wa- Water supply is contaminated,
ter supplies are an indication that harmful bacteria may be pre-
sent, possible pathogenic or-
ganisms in the water, water is
unsuitable for drinking
6. A disease that may be spread by inadequately dis- Dysentery
infected water
7. A common chemical used in disinfection of small Calcium hypochlorite
water supply is
8. A physical connection between a potable water A cross connection
supply and house well would be
9. The amount of chlorine in mg/L that is used up by Demand
reacting with iron organics of bacteria is called
10. Which of the following is a physical characteristic Greenish-Yellow Color, heavier
of chlorine gas than air, pungent penetrating
odor, corrosive
11. Which of the following would be considered a part Solution feed pump
of a hypo-chlorinator system
, TCEQ class c water license Exam Prep 2024-
2025 Guide
12. According to state requirements, all public water A flow measuring device
Supply wells should be provided with a raised con-
crete sealing block, screened vents, and-
13. Drawdown of a water well is determined by Ditterence in static and pump-
ing levels
14. pH of water indicates If it's acidic or basic
15. The pH of water is expressed on a pH scale of 0-14
16. Water that is considered neutral is expressed on 7.0
the pH scale at
17. Which of the following is a required Step in collect- Use of an approved, sterile
ing a routine distribution sample for bacteriologi- sample container
cal testing?
18. Sand filtration will remove which of the following Turbidity
from surface water
19. Activated carbon is used in a surface water plant Taste and odor control
primarily for
20. Which or the following chemicals are commonly Alum and ferric chloride
used as coagulants in surface water treatment
21. Ground storage tanks are required to provided Screened vents, an approved
with which of the following locking roof hatch, an overflow
pipe with hinged flap device,
annual inspection and mainte-
nance as needed
, 22. An elevated storage tank should be protected Painting, cathodic protection,
against corrosion by water stabilization, and only us-
ing galvanized and lead based
primed components
23. A public water supply system should maintain 35 psi
residual pressure of 20 psi and a minimum of nor-
mal operating pressure of
24. Before a new or repaired water line is placed into 50 mg/L
service, it must be properly disinfected by pro-
viding a chlorine dosage of and proper
detention time
25. Water bearing formations beneath the earths sur- Aquifers
face that are used as a source of water for public
water supplies are
26. The purpose of an air line on a well is Determine Water leves in the
well
27. The mesh size is an important feature of a well Reduce the amount of Sand
screen because properly sized openings should pumped
28. When treating surface Water, the process of coag- pH, alkalinity, temperature, and
ularon will be most affected by the chemical Dosage
29. A rapid sand filter should be backwashed When The loss of head gauge indicat-
ed between 6 and 10 feet
30. Which of the following is an acceptable disinfec- 0.2 mg/L free chlorine residual,
tion residual at the far reaches of the distribution 0.8 mg/L chloramine residual
System when using chloramine treat-
ment, 0.5 mg/L chloramine
2025 Guide
1. State Agency responsince for enforcing the safe Texas Commission on environ-
drinking water act in Texas mental Quality
2. What minerals can cause water hardness Calcium and magnesium
3. A public water system must at all times provide Adequate quantity of water,
pressure, and disinfection
4. A source groundwater would be aquifer
5. Fecal coliform organisms sometimes found in wa- Water supply is contaminated,
ter supplies are an indication that harmful bacteria may be pre-
sent, possible pathogenic or-
ganisms in the water, water is
unsuitable for drinking
6. A disease that may be spread by inadequately dis- Dysentery
infected water
7. A common chemical used in disinfection of small Calcium hypochlorite
water supply is
8. A physical connection between a potable water A cross connection
supply and house well would be
9. The amount of chlorine in mg/L that is used up by Demand
reacting with iron organics of bacteria is called
10. Which of the following is a physical characteristic Greenish-Yellow Color, heavier
of chlorine gas than air, pungent penetrating
odor, corrosive
11. Which of the following would be considered a part Solution feed pump
of a hypo-chlorinator system
, TCEQ class c water license Exam Prep 2024-
2025 Guide
12. According to state requirements, all public water A flow measuring device
Supply wells should be provided with a raised con-
crete sealing block, screened vents, and-
13. Drawdown of a water well is determined by Ditterence in static and pump-
ing levels
14. pH of water indicates If it's acidic or basic
15. The pH of water is expressed on a pH scale of 0-14
16. Water that is considered neutral is expressed on 7.0
the pH scale at
17. Which of the following is a required Step in collect- Use of an approved, sterile
ing a routine distribution sample for bacteriologi- sample container
cal testing?
18. Sand filtration will remove which of the following Turbidity
from surface water
19. Activated carbon is used in a surface water plant Taste and odor control
primarily for
20. Which or the following chemicals are commonly Alum and ferric chloride
used as coagulants in surface water treatment
21. Ground storage tanks are required to provided Screened vents, an approved
with which of the following locking roof hatch, an overflow
pipe with hinged flap device,
annual inspection and mainte-
nance as needed
, 22. An elevated storage tank should be protected Painting, cathodic protection,
against corrosion by water stabilization, and only us-
ing galvanized and lead based
primed components
23. A public water supply system should maintain 35 psi
residual pressure of 20 psi and a minimum of nor-
mal operating pressure of
24. Before a new or repaired water line is placed into 50 mg/L
service, it must be properly disinfected by pro-
viding a chlorine dosage of and proper
detention time
25. Water bearing formations beneath the earths sur- Aquifers
face that are used as a source of water for public
water supplies are
26. The purpose of an air line on a well is Determine Water leves in the
well
27. The mesh size is an important feature of a well Reduce the amount of Sand
screen because properly sized openings should pumped
28. When treating surface Water, the process of coag- pH, alkalinity, temperature, and
ularon will be most affected by the chemical Dosage
29. A rapid sand filter should be backwashed When The loss of head gauge indicat-
ed between 6 and 10 feet
30. Which of the following is an acceptable disinfec- 0.2 mg/L free chlorine residual,
tion residual at the far reaches of the distribution 0.8 mg/L chloramine residual
System when using chloramine treat-
ment, 0.5 mg/L chloramine
