CPO Certification Practice Test || Most Recent Exam
2026-2027 Actual Complete Real Exam Questions and
Correct Answers (Verified Answers) | Already Graded
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Channeling of filters occurs when:
A. there is a leak in the filter
B. the FMR is exceeded, and water cuts a channel through the
media C. the water overflows in a filter
D. all of the above - ANSWER-B. the FMR is exceeded, and
water cuts a channel through the media
The only physical factor that affects water balance is:
A. pH
B. TDS
C. temperature
D. calcium hardness - ANSWER-C. temperature
To be classified as a disinfectant, a compound must kill or
inactivate 99.9% of
contaminants as
well as:
A. maintaining proper water balance
B. leave a measurable residual in the water
,C. have a NFPA classification of
D. have a sweet smelling aroma - ANSWER-B. leave a
measurable residual in
the
water
Pools using chlorine gas as a disinfectant produce
hydrochloric acid, which can be neutralized with: A. sodium
thiosulfate
B. cyanuric acid
C. caustic soda or soda ash
D. carbon dioxide - ANSWER-C. caustic soda or soda ash
When balancing swimming pool water, the following should be
adjusted first:
A.
pH
B.
calcium
C. total
alkalinity
D. temperature - ANSWER-C. total
alkalinity
A spa with water tested as pH 7.2, temperature 103, calcium
hardness 600,
, total alkalinity 120, and tds of
1,500 will be:
A. scale
forming
B.
balanced
C.
corrosive
D. sanitized - ANSWER-A. scale
forming
When performing a water test, sample water should be
collected:
A. at the water surface
B. 18 inches below the surface, near a return line
C. from the filter tank
D. 18 inches below the surface, away from return line -
ANSWER-C. from the filter tank
Swimming pool circulation systems should be
adjusted to remove:
A. 75% from the main
drain
B. 75% from the
surface
C. 50% from the main drain and 50% from
the surface
2026-2027 Actual Complete Real Exam Questions and
Correct Answers (Verified Answers) | Already Graded
A+ | Guaranteed Success!! Newest Exam | Just
Released!!
Channeling of filters occurs when:
A. there is a leak in the filter
B. the FMR is exceeded, and water cuts a channel through the
media C. the water overflows in a filter
D. all of the above - ANSWER-B. the FMR is exceeded, and
water cuts a channel through the media
The only physical factor that affects water balance is:
A. pH
B. TDS
C. temperature
D. calcium hardness - ANSWER-C. temperature
To be classified as a disinfectant, a compound must kill or
inactivate 99.9% of
contaminants as
well as:
A. maintaining proper water balance
B. leave a measurable residual in the water
,C. have a NFPA classification of
D. have a sweet smelling aroma - ANSWER-B. leave a
measurable residual in
the
water
Pools using chlorine gas as a disinfectant produce
hydrochloric acid, which can be neutralized with: A. sodium
thiosulfate
B. cyanuric acid
C. caustic soda or soda ash
D. carbon dioxide - ANSWER-C. caustic soda or soda ash
When balancing swimming pool water, the following should be
adjusted first:
A.
pH
B.
calcium
C. total
alkalinity
D. temperature - ANSWER-C. total
alkalinity
A spa with water tested as pH 7.2, temperature 103, calcium
hardness 600,
, total alkalinity 120, and tds of
1,500 will be:
A. scale
forming
B.
balanced
C.
corrosive
D. sanitized - ANSWER-A. scale
forming
When performing a water test, sample water should be
collected:
A. at the water surface
B. 18 inches below the surface, near a return line
C. from the filter tank
D. 18 inches below the surface, away from return line -
ANSWER-C. from the filter tank
Swimming pool circulation systems should be
adjusted to remove:
A. 75% from the main
drain
B. 75% from the
surface
C. 50% from the main drain and 50% from
the surface
