TCEQ class c water license
exam
1. State Agency responsince for enforcing the safe drinking water act in
Texas-
: Texas Commission on environmental 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 water supplies are
an indica-tion that: Water supply is contaminated, harmful bacteria may be present, possible
pathogenic organisms in the water, water is unsuitable for drinking
6. A disease that may be spread by inadequately disinfected water:
Dysentery
7. A common chemical used in disinfection of small water
supply is: Calcium hypochlorite
8. A physical connection between a potable water supply and house
well would be: A cross connection
9. The amount of chlorine in mg/L that is used up by reacting with iron
organics of bacteria is called: Demand
10. Which of the following is a physical characteristic of chlorine
gas: Greenish-Yel-low Color, heavier than air, pungent penetrating odor, corrosive
11. Which of the following would be considered a part of a
hypo-chlorinator system: Solution feed pump
12. According to state requirements, all public water Supply
wells should be provided with a raised concrete sealing block,
screened vents, and-: A flow measuring device
13. Drawdown of a water well is determined by: Ditterence in static and
pumping 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 the pH scale
at: 7.0
17. Which of the following is a required Step in collecting a
routine distribution sample for bacteriological testing?: Use of an approved,
sterile sample container
, TCEQ class c water license
exam
18. Sand filtration will remove which of the following from surface
water: Turbidity
19. Activated carbon is used in a surface water plant primarily for:
Taste and odor control
, TCEQ class c water license
exam
20. Which or the following chemicals are commonly used as
coagulants in surface water treatment: Alum and ferric chloride
21. Ground storage tanks are required to provided with which of the
following-
: Screened vents, an approved locking roof hatch, an overflow pipe with hinged flap device, annual
inspection and maintenance as needed
22. An elevated storage tank should be protected against corrosion
by: Painting, cathodic protection, water stabilization, and only using galvanized and lead based
primed components
23. A public water supply system should maintain residual
pressure of 20 psi and a minimum of normal operating pressure
of: 35 psi
24. 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: 50 mg/L
25. Water bearing formations beneath the earths surface that
are used as a source of water for public water supplies are: Aquifers
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 screen
because properly sized openings should: Reduce the amount of Sand
pumped
28. When treating surface Water, the process of coagularon will
be most affect-ed by the: pH, alkalinity, temperature, and chemical Dosage
29. A rapid sand filter should be backwashed When: The loss of head
gauge indicated between 6 and 10 feet
30. Which of the following is an acceptable disinfection residual
at the far reaches of the distribution System: 0.2 mg/L free chlorine residual, 0.8
mg/L chloramine residual when using chloramine treatment, 0.5 mg/L chloramine for surface water
supply, 0.5 mg/L free chlorine residual for ground water Supply
31. What is the approximate total volume of a ons, if it is
circular tank in gall feet in diameter, and 15 feet deep: 30
79,300 gallons
exam
1. State Agency responsince for enforcing the safe drinking water act in
Texas-
: Texas Commission on environmental 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 water supplies are
an indica-tion that: Water supply is contaminated, harmful bacteria may be present, possible
pathogenic organisms in the water, water is unsuitable for drinking
6. A disease that may be spread by inadequately disinfected water:
Dysentery
7. A common chemical used in disinfection of small water
supply is: Calcium hypochlorite
8. A physical connection between a potable water supply and house
well would be: A cross connection
9. The amount of chlorine in mg/L that is used up by reacting with iron
organics of bacteria is called: Demand
10. Which of the following is a physical characteristic of chlorine
gas: Greenish-Yel-low Color, heavier than air, pungent penetrating odor, corrosive
11. Which of the following would be considered a part of a
hypo-chlorinator system: Solution feed pump
12. According to state requirements, all public water Supply
wells should be provided with a raised concrete sealing block,
screened vents, and-: A flow measuring device
13. Drawdown of a water well is determined by: Ditterence in static and
pumping 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 the pH scale
at: 7.0
17. Which of the following is a required Step in collecting a
routine distribution sample for bacteriological testing?: Use of an approved,
sterile sample container
, TCEQ class c water license
exam
18. Sand filtration will remove which of the following from surface
water: Turbidity
19. Activated carbon is used in a surface water plant primarily for:
Taste and odor control
, TCEQ class c water license
exam
20. Which or the following chemicals are commonly used as
coagulants in surface water treatment: Alum and ferric chloride
21. Ground storage tanks are required to provided with which of the
following-
: Screened vents, an approved locking roof hatch, an overflow pipe with hinged flap device, annual
inspection and maintenance as needed
22. An elevated storage tank should be protected against corrosion
by: Painting, cathodic protection, water stabilization, and only using galvanized and lead based
primed components
23. A public water supply system should maintain residual
pressure of 20 psi and a minimum of normal operating pressure
of: 35 psi
24. 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: 50 mg/L
25. Water bearing formations beneath the earths surface that
are used as a source of water for public water supplies are: Aquifers
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 screen
because properly sized openings should: Reduce the amount of Sand
pumped
28. When treating surface Water, the process of coagularon will
be most affect-ed by the: pH, alkalinity, temperature, and chemical Dosage
29. A rapid sand filter should be backwashed When: The loss of head
gauge indicated between 6 and 10 feet
30. Which of the following is an acceptable disinfection residual
at the far reaches of the distribution System: 0.2 mg/L free chlorine residual, 0.8
mg/L chloramine residual when using chloramine treatment, 0.5 mg/L chloramine for surface water
supply, 0.5 mg/L free chlorine residual for ground water Supply
31. What is the approximate total volume of a ons, if it is
circular tank in gall feet in diameter, and 15 feet deep: 30
79,300 gallons
