WATER TREATMENT OPERATOR CERTIFICATION
PRACTICE TEST BANK 2026 |500+ PRACTICE
QUESTIONS AND ANSWERS|NEW UPDATE
Why do operators monitor a filter's operation time, head loss and effluent
turbidity level?
A.) To watch for Breakpoint Chlorination
B.) Identify when it is time to do a filter backwash
C.) To measure pump curve
D.) Identify when a filter is bad and needs to be permanently replaced with a
new filter
B
An autoclave will sterilize at:
A.)With steam at 100 degrees Celsius at 25psi
B.)With steam at 300 degrees Celsius at 150psi
C.)With steam at 121 degrees Celsius at 15psi
D.)With steam at 100 degrees Celsius at 150psi
C
,If a water system collects less than 40 samples a month, how many can be
coliform positive and the water system still maintain compliance?
A. 1
B. 5
C. 5%
D. 12
A
Which is the method for testing for total coliform bacteria?
A. ABC Method
B. B&G Method
C. MTF Method
D. All of the Above
C
What are the hair like appendages that Giardia trophozoites use to propel
themselves through water are?
A. Mobility Nodes
B. NTUs
C. Proteins
,D. Flagella
D
Where is the least desirable point in a plug flow sedimentation basin for
turbulent flow that resuspends solids would be in the?
A. INLET ZONE
B. OUTLET ZONE
C. SETTLEING ZONE
D. LANDING ZONE
B
Pathogenic organisms?
A. Effect Taste and Odor
B. Cause Corrosion
C. Disease causing organisms
D. Harmless
C
What chemical can be created by certain bacterial organisms and accelerate the
corrosion process?
, A. CaCO3
B. N2
C. CO2
D. MgCO3
C
What is the sample size for lead and copper analysis?
A. 1 mL
B. 100 mL
C. 1,000 mL
D. 10,000 mL
C
A composite sample should never be collected for what type of analysis?
A. TDS
B. Turbidity
C. Bacteriological
D. All of the above
C
The most accurate chlorine residual measurement would be taken with?
PRACTICE TEST BANK 2026 |500+ PRACTICE
QUESTIONS AND ANSWERS|NEW UPDATE
Why do operators monitor a filter's operation time, head loss and effluent
turbidity level?
A.) To watch for Breakpoint Chlorination
B.) Identify when it is time to do a filter backwash
C.) To measure pump curve
D.) Identify when a filter is bad and needs to be permanently replaced with a
new filter
B
An autoclave will sterilize at:
A.)With steam at 100 degrees Celsius at 25psi
B.)With steam at 300 degrees Celsius at 150psi
C.)With steam at 121 degrees Celsius at 15psi
D.)With steam at 100 degrees Celsius at 150psi
C
,If a water system collects less than 40 samples a month, how many can be
coliform positive and the water system still maintain compliance?
A. 1
B. 5
C. 5%
D. 12
A
Which is the method for testing for total coliform bacteria?
A. ABC Method
B. B&G Method
C. MTF Method
D. All of the Above
C
What are the hair like appendages that Giardia trophozoites use to propel
themselves through water are?
A. Mobility Nodes
B. NTUs
C. Proteins
,D. Flagella
D
Where is the least desirable point in a plug flow sedimentation basin for
turbulent flow that resuspends solids would be in the?
A. INLET ZONE
B. OUTLET ZONE
C. SETTLEING ZONE
D. LANDING ZONE
B
Pathogenic organisms?
A. Effect Taste and Odor
B. Cause Corrosion
C. Disease causing organisms
D. Harmless
C
What chemical can be created by certain bacterial organisms and accelerate the
corrosion process?
, A. CaCO3
B. N2
C. CO2
D. MgCO3
C
What is the sample size for lead and copper analysis?
A. 1 mL
B. 100 mL
C. 1,000 mL
D. 10,000 mL
C
A composite sample should never be collected for what type of analysis?
A. TDS
B. Turbidity
C. Bacteriological
D. All of the above
C
The most accurate chlorine residual measurement would be taken with?
