TCEQ Surface Water B License Pt.
2 & 3 Actual Exam Study Guide
with 100% Verified Answers
1. What causes carbonate hardness? - ANSWER Magnesium Bicarbonate
2. What are the detention times for setting basins? - ANSWER 6 hours for
normal, 4.5 for Softening
3. What should be determined for each filter and recorded monthly? -
ANSWER Filter rate and backwash rate
4. What is the culture media used in a presumptive test? - ANSWER N/A
5. What is Lactose or Lauryl broth? - ANSWER A selective and differential
media for coliforms
6. What is the purpose of filter underdrains? - ANSWER To provide necessary
depth for additional media and improve filter performance
7. What are the factors that affect CL2 disinfection? - ANSWER Chlorine
concentration, contact time, temperature, dissolved and suspended matter
8. What happens during breakpoint chlorination? - ANSWER Additional
chlorine raises free chlorine residuals and doesn't form monochloramines
, 9. What do you replace when changing out a chlorine cylinder? - ANSWER
The lead washer
10.Is a certified plumber approved by TCEQ to work on water pipes? -
ANSWER No
11.What factors affect the hydraulic grade line? - ANSWER Emergency
demand, throttle valves, pipe diameters, and flows that are too great
12.When should a filter be backwashed? - ANSWER After 100 hours of
operation time, 6-10 ft of headloss, high turbidity, part-time operation, or
when the rate of flow controller opens 100%
13.What is the purpose of nonionic polymers? - ANSWER Filter aids
14.Where do humic and fulvic acids come from? - ANSWER Natural Organic
Matter (NOM) decay
15.What is the exception to ozone not producing halogenated DBP? -
ANSWER In bromide-rich water
16.What is the most common type of hardness in water? - ANSWER Calcium
and magnesium
17.What is formed when calcium and magnesium carbonates are combined with
carbon dioxide? - ANSWER Calcium and magnesium bicarbonates called
carbonate hardness
2 & 3 Actual Exam Study Guide
with 100% Verified Answers
1. What causes carbonate hardness? - ANSWER Magnesium Bicarbonate
2. What are the detention times for setting basins? - ANSWER 6 hours for
normal, 4.5 for Softening
3. What should be determined for each filter and recorded monthly? -
ANSWER Filter rate and backwash rate
4. What is the culture media used in a presumptive test? - ANSWER N/A
5. What is Lactose or Lauryl broth? - ANSWER A selective and differential
media for coliforms
6. What is the purpose of filter underdrains? - ANSWER To provide necessary
depth for additional media and improve filter performance
7. What are the factors that affect CL2 disinfection? - ANSWER Chlorine
concentration, contact time, temperature, dissolved and suspended matter
8. What happens during breakpoint chlorination? - ANSWER Additional
chlorine raises free chlorine residuals and doesn't form monochloramines
, 9. What do you replace when changing out a chlorine cylinder? - ANSWER
The lead washer
10.Is a certified plumber approved by TCEQ to work on water pipes? -
ANSWER No
11.What factors affect the hydraulic grade line? - ANSWER Emergency
demand, throttle valves, pipe diameters, and flows that are too great
12.When should a filter be backwashed? - ANSWER After 100 hours of
operation time, 6-10 ft of headloss, high turbidity, part-time operation, or
when the rate of flow controller opens 100%
13.What is the purpose of nonionic polymers? - ANSWER Filter aids
14.Where do humic and fulvic acids come from? - ANSWER Natural Organic
Matter (NOM) decay
15.What is the exception to ozone not producing halogenated DBP? -
ANSWER In bromide-rich water
16.What is the most common type of hardness in water? - ANSWER Calcium
and magnesium
17.What is formed when calcium and magnesium carbonates are combined with
carbon dioxide? - ANSWER Calcium and magnesium bicarbonates called
carbonate hardness
