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TCEQ CLASS B SURFACE WATER B TEST
MATERIAL Exam Questions with 100% Correct
Answers Latest Versions 2025 Graded A+
1. Most filter bed trouble is due to , which are roughly
spherical aggregates of solid material usually less than an inch
in diameter. - correct answer -Mud Balls
2. Mud balls are caused by . - correct answer -All
Listed - Poor preparation of applied water, adherence of filtered
material to sand, and faulty application of wash water
3. Mud balls, which cause and sand clogging,
indicate a need to improve washing or and
sedimentation. - correct answer -Cracking and Coagulation
4. Sample for mud balls from the top inches of the
filter. - correct answer -6
5. Sand coated with material may shrink under high
head loss and produce cracks an inch wide and 12 to 18
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inches deep. - correct answer -Gelatinous
6. Cracks impact filter efficiency, allowing influent to by-pass
the fine sand and create filter . - correct answer -
7. Clogs occur more frequently in cracks, but form
anywhere within the filter that is susceptible to restricted flow. -
correct answer -Side WAll
8. During filtration, clogs create uneven loading and
filter runs. - correct answer -shorten
9. To treat with chlorine, add pounds of calcium
hypochlorite for every square feet of filter and let it
dissolve. - correct answer -4/100
10. In softening plants, where trouble is due to calcium
, clean the filter with hydrochloric or acid. -
correct answer -Carbonate/carbonic
11. Sulfur dissolves manganese, , or
calcium carbonate. - correct answer -Dioxide/iron
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12. Facilities serving or more people must
continuously monitor each filter's effluent turbidity and record it
every minutes. - correct answer -10,000/15
13. Systems serving or more people must monitor
turbidity from each filter with a continuous on-line
and continuous recorder. - correct answer -10000/turbidimeter
14. A system that exceeds NTU in the combined
effluent shall notify the public drinking water program by the
next business day. - correct answer -5.0
15. Required reports must be submitted to the Texas
Commission on Environmental Quality by the day of
the month following the end of the reporting period. - correct
answer -10th
16. Media must meet AWWA filtering material standard B100-
96. - correct answer -True
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17. What is the most important factor affecting the useful life of
service lines? - correct answer -It is the ability of the material to
resist internal and external corrosion
18. When does Suction Head exist? - correct answer -Suction
head exists when the source of supply is above the centerline
of the pump.
19. What is Net positive Suction Head (NPSH) - correct answer -
NPSH is the pressure under which water enters the eye of the
impeller in a centrifugal pump. Insufficient NPSH is the main
cause of pump cavitation
20. Explain and expand on Chlorine Dioxide (what it reacts with,
oxidizes, etc) - correct answer -Chlorine Dioxide is a gas used
in small quantities to disinfect water. It does not react with
organics to form THMs and HAAs. It oxidizes phenols,
manganese, iron, sulfurous and organic compounds which aids
in the removal of tastes and odors. It is a very effective
bactericide and a superior virocide. It dies not combine with
ammonia. Chlorine Dioxide MRDL is .8 mg/L and monitoring
procedures are the same as for chlorine. The Chlorite MCL is
.q mg/L and must be monitored daily.
TCEQ CLASS B SURFACE WATER B TEST
MATERIAL Exam Questions with 100% Correct
Answers Latest Versions 2025 Graded A+
1. Most filter bed trouble is due to , which are roughly
spherical aggregates of solid material usually less than an inch
in diameter. - correct answer -Mud Balls
2. Mud balls are caused by . - correct answer -All
Listed - Poor preparation of applied water, adherence of filtered
material to sand, and faulty application of wash water
3. Mud balls, which cause and sand clogging,
indicate a need to improve washing or and
sedimentation. - correct answer -Cracking and Coagulation
4. Sample for mud balls from the top inches of the
filter. - correct answer -6
5. Sand coated with material may shrink under high
head loss and produce cracks an inch wide and 12 to 18
, Page | 2
inches deep. - correct answer -Gelatinous
6. Cracks impact filter efficiency, allowing influent to by-pass
the fine sand and create filter . - correct answer -
7. Clogs occur more frequently in cracks, but form
anywhere within the filter that is susceptible to restricted flow. -
correct answer -Side WAll
8. During filtration, clogs create uneven loading and
filter runs. - correct answer -shorten
9. To treat with chlorine, add pounds of calcium
hypochlorite for every square feet of filter and let it
dissolve. - correct answer -4/100
10. In softening plants, where trouble is due to calcium
, clean the filter with hydrochloric or acid. -
correct answer -Carbonate/carbonic
11. Sulfur dissolves manganese, , or
calcium carbonate. - correct answer -Dioxide/iron
, Page | 3
12. Facilities serving or more people must
continuously monitor each filter's effluent turbidity and record it
every minutes. - correct answer -10,000/15
13. Systems serving or more people must monitor
turbidity from each filter with a continuous on-line
and continuous recorder. - correct answer -10000/turbidimeter
14. A system that exceeds NTU in the combined
effluent shall notify the public drinking water program by the
next business day. - correct answer -5.0
15. Required reports must be submitted to the Texas
Commission on Environmental Quality by the day of
the month following the end of the reporting period. - correct
answer -10th
16. Media must meet AWWA filtering material standard B100-
96. - correct answer -True
, Page | 4
17. What is the most important factor affecting the useful life of
service lines? - correct answer -It is the ability of the material to
resist internal and external corrosion
18. When does Suction Head exist? - correct answer -Suction
head exists when the source of supply is above the centerline
of the pump.
19. What is Net positive Suction Head (NPSH) - correct answer -
NPSH is the pressure under which water enters the eye of the
impeller in a centrifugal pump. Insufficient NPSH is the main
cause of pump cavitation
20. Explain and expand on Chlorine Dioxide (what it reacts with,
oxidizes, etc) - correct answer -Chlorine Dioxide is a gas used
in small quantities to disinfect water. It does not react with
organics to form THMs and HAAs. It oxidizes phenols,
manganese, iron, sulfurous and organic compounds which aids
in the removal of tastes and odors. It is a very effective
bactericide and a superior virocide. It dies not combine with
ammonia. Chlorine Dioxide MRDL is .8 mg/L and monitoring
procedures are the same as for chlorine. The Chlorite MCL is
.q mg/L and must be monitored daily.
