TEXAS WASTEWATER CLASS B EXAM 2025 (ACTUAL EXAM) QUESTIONS A
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
1. The name of the State Agency Texas Commission of Environmental Quality
responsible for enforcing pollu-
tion control laws in Texas
2. The term pathogenic means Capable of causing disease
3. The minimum separation be- 9 feet
tween sewer lines and potable
water lines is
4. A licensed wastewater operator consistently does best job possible, practices personal safe-
is a professional ty, strives to improve job knowledge, strives to keep the
plant and collection system in the best appearance and
working order
5. An important step in testing Filtering a sample
a sample for Total Suspended
Solids is
6. The Biochemical oxygen De- Measuring the dissolved oxygen (DO) used
mand (BOD) of a sample is
based on
7. The results of Biochemical Oxy- How the plant was operating 5 days ago
gen Demand (BOD) sample tak-
en at a treatment plant tells the
operator
8. Which of the following are dan- Natural gas, gasoline fumes, hydrogen sulfide and carbon
gerous gasses that are likely to dioxide
be present in lift stations and
manholes?
, TEXAS WASTEWATER CLASS B EXAM 2025 (ACTUAL EXAM) QUESTIONS A
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
9. A preferred hydraulic method of Hydro Jet Cleaner
cleaning sewer lines is
10. Ways to reduce bad odors com- routinely cleaning slow running or low flow lines, adding
ing from a collection system chlorine or hydrogen peroxide to the collection system
11. Types of pipe that are common- ductile iron, Poly Vinyl Chloride (PVC)
ly used in wastewater collection
system
12. Before entering a confined Use approved monitoring device and check for the pres-
space a worker should ence of dangerous gasses, ventilate the space with a blower,
wear a safety harness and attach a life line
13. A properly designed and op- 30-40%
erated primary sedimentation
tank should remove _____ per-
cent of incoming BOD
14. Devices that may be used to de- air bubbler, floats, electrodes, Acoustic (sonic)
termine the level of sewage in a
lift station
15. What is the most important role decompose organic matter
of aerobic bacteria in the treat-
ment of wastewater?
16. The hydraulic loading of a trick- flow rate and filter area
ling filter may be determined by
17. These can be used to dewater belt press, drying beds, solid bowl centrifuge, gravity thick-
sludge ener
, TEXAS WASTEWATER CLASS B EXAM 2025 (ACTUAL EXAM) QUESTIONS A
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
18. Most important to providing ad- sunlight, algae, bacteria and time
equate sewage treatment in a
stabilization pond
19. Offensive and objectionable septic conditions are present
odors which sometimes occur in
trickling filters usually indicate
20. Dissolved Oxygen (DO) in aera- 2 to 4 mg/L
tion tank of an activated sludge
plant should be maintained at
or about
21. Contributes to the infiltration in breaks in the main lines, high ground water levels, heavy
a collection system rains, hydro jet cleaning plugged mains
22. When a centrifuge pump loses pump is no longer moving liquid
prime the
23. A Rotating Biological Contactor fixed firm biological treatment process
(RBC) is
24. Needs to be checked regularly aeration equipment and mixed liquor solids
to properly operate an activated
sludge treatment plant
25. Point source discharges are discharges that come from pipes or ditches that are moni-
tored, controlled and inspected
26. Non-point discharges are discharges that have intermittent, dispersed flows having
little or no control
27.
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
1. The name of the State Agency Texas Commission of Environmental Quality
responsible for enforcing pollu-
tion control laws in Texas
2. The term pathogenic means Capable of causing disease
3. The minimum separation be- 9 feet
tween sewer lines and potable
water lines is
4. A licensed wastewater operator consistently does best job possible, practices personal safe-
is a professional ty, strives to improve job knowledge, strives to keep the
plant and collection system in the best appearance and
working order
5. An important step in testing Filtering a sample
a sample for Total Suspended
Solids is
6. The Biochemical oxygen De- Measuring the dissolved oxygen (DO) used
mand (BOD) of a sample is
based on
7. The results of Biochemical Oxy- How the plant was operating 5 days ago
gen Demand (BOD) sample tak-
en at a treatment plant tells the
operator
8. Which of the following are dan- Natural gas, gasoline fumes, hydrogen sulfide and carbon
gerous gasses that are likely to dioxide
be present in lift stations and
manholes?
, TEXAS WASTEWATER CLASS B EXAM 2025 (ACTUAL EXAM) QUESTIONS A
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
9. A preferred hydraulic method of Hydro Jet Cleaner
cleaning sewer lines is
10. Ways to reduce bad odors com- routinely cleaning slow running or low flow lines, adding
ing from a collection system chlorine or hydrogen peroxide to the collection system
11. Types of pipe that are common- ductile iron, Poly Vinyl Chloride (PVC)
ly used in wastewater collection
system
12. Before entering a confined Use approved monitoring device and check for the pres-
space a worker should ence of dangerous gasses, ventilate the space with a blower,
wear a safety harness and attach a life line
13. A properly designed and op- 30-40%
erated primary sedimentation
tank should remove _____ per-
cent of incoming BOD
14. Devices that may be used to de- air bubbler, floats, electrodes, Acoustic (sonic)
termine the level of sewage in a
lift station
15. What is the most important role decompose organic matter
of aerobic bacteria in the treat-
ment of wastewater?
16. The hydraulic loading of a trick- flow rate and filter area
ling filter may be determined by
17. These can be used to dewater belt press, drying beds, solid bowl centrifuge, gravity thick-
sludge ener
, TEXAS WASTEWATER CLASS B EXAM 2025 (ACTUAL EXAM) QUESTIONS A
VERIFIED ANSWERS
Study online at https://quizlet.com/_hiy7sj
18. Most important to providing ad- sunlight, algae, bacteria and time
equate sewage treatment in a
stabilization pond
19. Offensive and objectionable septic conditions are present
odors which sometimes occur in
trickling filters usually indicate
20. Dissolved Oxygen (DO) in aera- 2 to 4 mg/L
tion tank of an activated sludge
plant should be maintained at
or about
21. Contributes to the infiltration in breaks in the main lines, high ground water levels, heavy
a collection system rains, hydro jet cleaning plugged mains
22. When a centrifuge pump loses pump is no longer moving liquid
prime the
23. A Rotating Biological Contactor fixed firm biological treatment process
(RBC) is
24. Needs to be checked regularly aeration equipment and mixed liquor solids
to properly operate an activated
sludge treatment plant
25. Point source discharges are discharges that come from pipes or ditches that are moni-
tored, controlled and inspected
26. Non-point discharges are discharges that have intermittent, dispersed flows having
little or no control
27.
