2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
TCEQ Class B Surface Water B test material -
Exam B test material - TCEQ Class B Surface
Water 2026!!
Save
Terms in this set (293)
What is the most important factor It is the ability of the material to resist internal and
affecting the useful life of service external corrosion
lines?
When does Suction Head exist? Suction head exists when the source of supply is
above the centerline of the pump.
What is Net positive Suction Head NPSH is the pressure under which water enters the
(NPSH) eye of the impeller in a centrifugal pump.
Insufficient NPSH is the main cause of pump
cavitation
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,2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
Explain and expand on Chlorine Chlorine Dioxide is a gas used in small quantities to
Dioxide (what it reacts with, oxidizes, disinfect water. It does not react with organics to
etc) 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.
What is texas drinking water pH The texas drinking water requirements require a pH
requirements? > 7.0 for the water treatment plant finished water.
EPA requires that pH analysis be preformed within
15 minutes of the sample being caught.
How does pH affect Chlorine When chlorine is added to water it forms
activity? hypochlorous acid (HOCL) and hydrochloric acid
(OCL). The hypochlorous acid is the effective
disinfectant. At a pH of 4.0 there is 100%
hypochlorous acid. At a pH of 11 there is 100%
hypochlorite ion. At a pH of 7, the hypochlorous
acid is at about 80% and the hypochlorite ion
makes up about 20% of the chlorine content. The
lower the pH is more effective chlorine is because
you have more hypochlorous acid.
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,2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
What is meant by water stability? Stable water is defined as water that will neither
deposit or dissolve a calcium carbonate film or
scale. Since no water is stable indefinitely, chemical
treatment of water usually is intended to produce
water that is slightly scale forming without being
liable to cause stoppages in small lines and
services. Bayliss curve is the simplest determination
of stability. The Langelier saturation index is also
used.
What/how are above ground tanks Corrosion protection for above ground tanks and
and piping protected from piping is prevented by: cathodic protection, use if
corrosion? protective linings/coatings, eliminating different
types of metals in the distribution system, and
treating the water with chemicals to make it less
corrosive
How do you tests fir alkalinity? The two tritiation methods of analysis are a
standard acid to titrate a sample. The end point of
the titration is determined by the following: an
indicator that changes color at a certain pH, or
potentiometric titration to end - point pH. Using
either of the methods, a measured amount of
sample is titrated with a standard sulfuric acid to a
predetermined pH. Nomograph are a graphical
form of determining alkalinity. If the pH, total
alkalinity, temperature and total dissolved solids
are known, any or all of the alkalinity forms may be
estimated.
What is Turbidity? Turbidity can be described as a measure of the
relative clarity of water. Turbidity is an expression of
the optical property that causes light to be
scattered and absorbed rather than transmitted in
straight lines through the sample.
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, 2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
What causes Turbidity? Turbidity is caused by clay, slit, finely divided
organic and inorganic material. Other suspended
matter and microscopic organisms can also cause
turbidity. There is one approved method for
running turbidity - the Nephelometric Method
(NTU)
What is chlorine Demand? The amount of chlorine used up to completely
react with the water and its suspended or dissolve
material
What is chlorine residual? When all the demand of the water is met any
additional chlorine produces a chlorine residual
What is chlorine dosage? Demand plus residual is the chlorine dosage.
Chlorine Dosage = Demand + Residual
What determines rate of Chlorine concentration and contact time
disinfection? determines the rate and degree of disinfection. If
concentration increases, the time can be reduced;
if concentration is reduced the time must be
increased.
How does temperature effect Chlorine effectiveness is greater at higher
chlorine effectiveness? temperatures, up to the point that chlorine
volatizes. At low temperature, chlorine is more
stable, but disinfection time increases.
Is removing turbidity important for Turbidity must be removed to low levels by
disinfection? sedimentation and filtration to allow chlorine to
contact pathogens.
What happens to dissolved solids on Dissolved solids are oxidized on contact further
contact with chlorine? reinforcing the importance of contact time.
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TCEQ Class B Surface Water B test material -
Exam B test material - TCEQ Class B Surface
Water 2026!!
Save
Terms in this set (293)
What is the most important factor It is the ability of the material to resist internal and
affecting the useful life of service external corrosion
lines?
When does Suction Head exist? Suction head exists when the source of supply is
above the centerline of the pump.
What is Net positive Suction Head NPSH is the pressure under which water enters the
(NPSH) eye of the impeller in a centrifugal pump.
Insufficient NPSH is the main cause of pump
cavitation
https://quizlet.com/1144876943/tceq-class-b-surface-water-b-test-material-exam-b-test-material-tceq-class-b-surface-water-2026-flash-cards/?new 1/45
,2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
Explain and expand on Chlorine Chlorine Dioxide is a gas used in small quantities to
Dioxide (what it reacts with, oxidizes, disinfect water. It does not react with organics to
etc) 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.
What is texas drinking water pH The texas drinking water requirements require a pH
requirements? > 7.0 for the water treatment plant finished water.
EPA requires that pH analysis be preformed within
15 minutes of the sample being caught.
How does pH affect Chlorine When chlorine is added to water it forms
activity? hypochlorous acid (HOCL) and hydrochloric acid
(OCL). The hypochlorous acid is the effective
disinfectant. At a pH of 4.0 there is 100%
hypochlorous acid. At a pH of 11 there is 100%
hypochlorite ion. At a pH of 7, the hypochlorous
acid is at about 80% and the hypochlorite ion
makes up about 20% of the chlorine content. The
lower the pH is more effective chlorine is because
you have more hypochlorous acid.
https://quizlet.com/1144876943/tceq-class-b-surface-water-b-test-material-exam-b-test-material-tceq-class-b-surface-water-2026-flash-cards/?new 2/45
,2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
What is meant by water stability? Stable water is defined as water that will neither
deposit or dissolve a calcium carbonate film or
scale. Since no water is stable indefinitely, chemical
treatment of water usually is intended to produce
water that is slightly scale forming without being
liable to cause stoppages in small lines and
services. Bayliss curve is the simplest determination
of stability. The Langelier saturation index is also
used.
What/how are above ground tanks Corrosion protection for above ground tanks and
and piping protected from piping is prevented by: cathodic protection, use if
corrosion? protective linings/coatings, eliminating different
types of metals in the distribution system, and
treating the water with chemicals to make it less
corrosive
How do you tests fir alkalinity? The two tritiation methods of analysis are a
standard acid to titrate a sample. The end point of
the titration is determined by the following: an
indicator that changes color at a certain pH, or
potentiometric titration to end - point pH. Using
either of the methods, a measured amount of
sample is titrated with a standard sulfuric acid to a
predetermined pH. Nomograph are a graphical
form of determining alkalinity. If the pH, total
alkalinity, temperature and total dissolved solids
are known, any or all of the alkalinity forms may be
estimated.
What is Turbidity? Turbidity can be described as a measure of the
relative clarity of water. Turbidity is an expression of
the optical property that causes light to be
scattered and absorbed rather than transmitted in
straight lines through the sample.
https://quizlet.com/1144876943/tceq-class-b-surface-water-b-test-material-exam-b-test-material-tceq-class-b-surface-water-2026-flash-cards/?new 3/45
, 2/17/26, 5:26 PM TCEQ Class B Surface Water B test material -Exam B test material - TCEQ Class B Surface Water 2026!! Flashcards | Quizlet
What causes Turbidity? Turbidity is caused by clay, slit, finely divided
organic and inorganic material. Other suspended
matter and microscopic organisms can also cause
turbidity. There is one approved method for
running turbidity - the Nephelometric Method
(NTU)
What is chlorine Demand? The amount of chlorine used up to completely
react with the water and its suspended or dissolve
material
What is chlorine residual? When all the demand of the water is met any
additional chlorine produces a chlorine residual
What is chlorine dosage? Demand plus residual is the chlorine dosage.
Chlorine Dosage = Demand + Residual
What determines rate of Chlorine concentration and contact time
disinfection? determines the rate and degree of disinfection. If
concentration increases, the time can be reduced;
if concentration is reduced the time must be
increased.
How does temperature effect Chlorine effectiveness is greater at higher
chlorine effectiveness? temperatures, up to the point that chlorine
volatizes. At low temperature, chlorine is more
stable, but disinfection time increases.
Is removing turbidity important for Turbidity must be removed to low levels by
disinfection? sedimentation and filtration to allow chlorine to
contact pathogens.
What happens to dissolved solids on Dissolved solids are oxidized on contact further
contact with chlorine? reinforcing the importance of contact time.
https://quizlet.com/1144876943/tceq-class-b-surface-water-b-test-material-exam-b-test-material-tceq-class-b-surface-water-2026-flash-cards/?new 4/45
