CERTIFIED POOL OPERATOR CPO HANDBOOK EXAM REVIEW SOLVED QUESTIONS COMPLETE ANSWERS GRADED A PLUS

CERTIFIED POOL OPERATOR CPO HANDBOOK EXAM REVIEW SOLVED QUESTIONS
COMPLETE ANSWERS GRADED A PLUS
Certified POOL Operator CPO Handbook Final
Study Sheet 2026/2027 Solved Questions and Answers
Verified Solutions Latest Update

Question:
Ideal chorine level for a pool is:

Answer:
1ppm to 5ppm



Question:
Maximum level of chlorine in a pool is:

Answer:
5ppm



Question:
If you see bubbles coming up from a return, the possible cause could be

Answer:
a bad seal on the hair/lint strainer - it is not properly closed, or air is in the filter, or water level is too
low



Question:
The hypochlorinator doesn't work. What could be a possible cause for this? a) no chlorine in the vat
b) the injection fitting is clogged c) the tube assembly needs to be changed d) all of the above

Answer:
d) all of the above

, Question:
You go to the pool in the morning and notice the chlorine is at zero. You hand-feed chlorine, how
long to do you have to wait to allow people to go into the pool. a) no time b) 15 minutes c) 30
minutes d) One day

Answer:
c) 30 minutes



Question:
When doing the pH test and the sample turns yellow, what does it mean?

Answer:
pH is too low



Question:
When doing the pH test and the sample turns purple, what does it mean?

Answer:
pH is too high



Question:
What do you do if a patron complains of a chlorine smell and their eyes are stinging?

Answer:
Raise the chlorine to Breakpoint Level.



Question:
If the telephone at the pool doesn't work

Answer:
close the pool