TCEQ Surface Water B License Exam 2025
Questions and Answers
When pressure testing a new line, how much pressure do you add? - ANS 1.5 times normal
pressure, up to 150 pounds, whichever is greater
What would cause a repeat Bac-T sample? - ANS Incomplete form, not enough sample, silt or
slime in the bottle, positive e-coli, all of the above
What are the layers of stratification? - ANS Upper layer - Epilimnion. Middle layer -
Thermocline. Bottom Layer - Hypolimnion.
What standard must bleach meet? - ANS NSF (National Sanitation Foundation)
What is the Solid contact unit? - ANS Also known as a Sludge blanket unit, it is an all-in-one
unit, handling mixing, flocculation and sedimentation, with an upward flow.
What is the number one sludge removal process in Texas? - ANS Lagooning/Lagoons.
What are the Log removals for cryptosporidium, giardia and viruses? - ANS Cryptosporidium -
Log 2, 99%. Giardia - Log 3, 99.9%. Viruses - Log 4, 99.99%.
Which two filter membranes remove the most NTUs? - ANS RO (Reverse Osmosis), and Nano
Filtration
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, What are lime and soda ash used for removing? - ANS Hardness
What purpose does aeration serve in the softening process? - ANS Releases CO2 which helps
keep hardness in solution.
What is the Jar Test Process? - ANS Unknown
What can replace primary coagulation? - ANS Cationic polymers.
What tells you that the chloramine ratio is off? - ANS The presence of di and tri chloramines,
and excessive free ammonia.
What is the Right to Know law? - ANS Typically included in the MSDS. The law includes
employers providing information, training and PPE for various chemicals worker may be
exposed to.
What is the action level for Lead and Copper in the Lead and Copper Rule? - ANS 0.015 mg/L
for Lead, 1.3 mg/L for Copper
What is the Baylis Curve? - ANS A curve that shows the relationship between pH values and
Alkalinity
What two acids in water react with chlorine to form Trihalomethanes? - ANS Humic and
Fulvic
What chemical analysis deals with changes in color at pH of either 4.5 or 8.3? - ANS Alkalinity
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
Questions and Answers
When pressure testing a new line, how much pressure do you add? - ANS 1.5 times normal
pressure, up to 150 pounds, whichever is greater
What would cause a repeat Bac-T sample? - ANS Incomplete form, not enough sample, silt or
slime in the bottle, positive e-coli, all of the above
What are the layers of stratification? - ANS Upper layer - Epilimnion. Middle layer -
Thermocline. Bottom Layer - Hypolimnion.
What standard must bleach meet? - ANS NSF (National Sanitation Foundation)
What is the Solid contact unit? - ANS Also known as a Sludge blanket unit, it is an all-in-one
unit, handling mixing, flocculation and sedimentation, with an upward flow.
What is the number one sludge removal process in Texas? - ANS Lagooning/Lagoons.
What are the Log removals for cryptosporidium, giardia and viruses? - ANS Cryptosporidium -
Log 2, 99%. Giardia - Log 3, 99.9%. Viruses - Log 4, 99.99%.
Which two filter membranes remove the most NTUs? - ANS RO (Reverse Osmosis), and Nano
Filtration
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, What are lime and soda ash used for removing? - ANS Hardness
What purpose does aeration serve in the softening process? - ANS Releases CO2 which helps
keep hardness in solution.
What is the Jar Test Process? - ANS Unknown
What can replace primary coagulation? - ANS Cationic polymers.
What tells you that the chloramine ratio is off? - ANS The presence of di and tri chloramines,
and excessive free ammonia.
What is the Right to Know law? - ANS Typically included in the MSDS. The law includes
employers providing information, training and PPE for various chemicals worker may be
exposed to.
What is the action level for Lead and Copper in the Lead and Copper Rule? - ANS 0.015 mg/L
for Lead, 1.3 mg/L for Copper
What is the Baylis Curve? - ANS A curve that shows the relationship between pH values and
Alkalinity
What two acids in water react with chlorine to form Trihalomethanes? - ANS Humic and
Fulvic
What chemical analysis deals with changes in color at pH of either 4.5 or 8.3? - ANS Alkalinity
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
