WASTEWATER OPERATOR CLASS C
PRACTICE TEST EXAM REVIEW
LATEST 2026 COMPLETE STUDY
QUESTIONS WITH VERIFIED CORRECT
SOLUTIONS GUARANTEED PASS |
RATED A+
,WASTEWATER OPERATOR CLASS C PRACTICE TEST
EXAM REVIEW LATEST 2026 COMPLETE STUDY
QUESTIONS WITH VERIFIED CORRECT SOLUTIONS
GUARANTEED PASS | RATED A+
If excessive pressure builds up in a chlorine tank due to excessive heat. What will prevent
explosions?
A. Valve seat adjustments
B. Heat reducing valve
C. Fusible plug
D. Check valve - Answer>>> C. Fusible plug
There is septic wastewater entering your primary clarifier. What is the problem?
A. Aerobic conditions in the collections system
B. Lift station pumps operating on short cycles
C. Anaerobic conditions in the collections systems
D. High flows due to a low MCRT - Answer>>> C. Anaerobic condition in the collections
system
In an anaerobic digester, when the VA/ALK ratio starts to increase, what will be noticeable?
A. An increase in Co2 & decrease in pH
B. A decrease in Co2 & increase in pH
C. Optimum operation
, D. an increase in Co2 & increase in pH - Answer>>> A. An increase in Co2 & decrease in pH
Detritus is noticed in your grit channel. What is the problem?
A. Velocity too fast with short D/T
B. Velocity too low with long D/T
C. Short circuiting
D. Density currents - Answer>>> B. Velocity too low with long D/T
What should be the maximum allowable level of TSS and BOD in the eff. of a domestic w/w
facility in accordance with FAC?
A. 20 TSS, 20 BOD or 80% removal
B. 30 TSS, 30 BOD or 90% removal
C. 20 TSS, 30 BOD or 90% removal
D. 20 TSS, 20 BOD or 90% removal - Answer>>> D. 20 TSS, 20 BOD or 90% removal
What is considered normal operation of an aerobic digester?
A. Fill react
B. Skim off foam when needed
C. Settle and Decant as needed
D. Feed only during low flow or constant when the sun is out - Answer>>> C. Settle and Decant
as needed
If a 220 volt, 3 phase motor is running backwards what should you do?
PRACTICE TEST EXAM REVIEW
LATEST 2026 COMPLETE STUDY
QUESTIONS WITH VERIFIED CORRECT
SOLUTIONS GUARANTEED PASS |
RATED A+
,WASTEWATER OPERATOR CLASS C PRACTICE TEST
EXAM REVIEW LATEST 2026 COMPLETE STUDY
QUESTIONS WITH VERIFIED CORRECT SOLUTIONS
GUARANTEED PASS | RATED A+
If excessive pressure builds up in a chlorine tank due to excessive heat. What will prevent
explosions?
A. Valve seat adjustments
B. Heat reducing valve
C. Fusible plug
D. Check valve - Answer>>> C. Fusible plug
There is septic wastewater entering your primary clarifier. What is the problem?
A. Aerobic conditions in the collections system
B. Lift station pumps operating on short cycles
C. Anaerobic conditions in the collections systems
D. High flows due to a low MCRT - Answer>>> C. Anaerobic condition in the collections
system
In an anaerobic digester, when the VA/ALK ratio starts to increase, what will be noticeable?
A. An increase in Co2 & decrease in pH
B. A decrease in Co2 & increase in pH
C. Optimum operation
, D. an increase in Co2 & increase in pH - Answer>>> A. An increase in Co2 & decrease in pH
Detritus is noticed in your grit channel. What is the problem?
A. Velocity too fast with short D/T
B. Velocity too low with long D/T
C. Short circuiting
D. Density currents - Answer>>> B. Velocity too low with long D/T
What should be the maximum allowable level of TSS and BOD in the eff. of a domestic w/w
facility in accordance with FAC?
A. 20 TSS, 20 BOD or 80% removal
B. 30 TSS, 30 BOD or 90% removal
C. 20 TSS, 30 BOD or 90% removal
D. 20 TSS, 20 BOD or 90% removal - Answer>>> D. 20 TSS, 20 BOD or 90% removal
What is considered normal operation of an aerobic digester?
A. Fill react
B. Skim off foam when needed
C. Settle and Decant as needed
D. Feed only during low flow or constant when the sun is out - Answer>>> C. Settle and Decant
as needed
If a 220 volt, 3 phase motor is running backwards what should you do?
