Pool Operator Study Guide questions and answers
2026\2027 A+ Grade
Ideal bromine level in a pool and spa is:
- correct answer 3ppm to 6ppm
Ideal chorine level for a pool is:
- correct answer 1ppm to 5ppm
Maximum level of chlorine in a pool is:
- correct answer 5ppm
If you see bubbles coming up from a return, the possible cause could be
- correct 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
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
- correct answer d) all of the above
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
- correct answer c) 30 minutes
When doing the pH test and the sample turns yellow, what does it mean?
- correct answer pH is too low
When doing the pH test and the sample turns purple, what does it mean?
- correct answer pH is too high
What do you do if a patron complains of a chlorine smell and their eyes are stinging?
- correct answer Raise the chlorine to Breakpoint Level.
If the telephone at the pool doesn't work
- correct answer close the pool
What should you use when handling chemicals?
- correct answer Personal Protective Equipment - Gloves, Goggles, Apron
What happens if the alkalinity level is too low?
- correct answer pH is difficult to maintain, the water will cause damage to the pool walls
ADD CHEMICALS TO WATER; DO NOT ADD WATER TO CHEMICALS
- correct answer ...
How do you lower the Calcium Hardness Level?
- correct answer Drain water out and add fresh water. Dilute the water.
What should you have if the water is deeper than 5 ft?
- correct answer Put up a safety line
If the chlorinator is working and you have chlorine in the vat, what is a possible reason for the chlorine
reading being 0?
- correct answer The test could be bleached (chlorine level is too high)
2026\2027 A+ Grade
Ideal bromine level in a pool and spa is:
- correct answer 3ppm to 6ppm
Ideal chorine level for a pool is:
- correct answer 1ppm to 5ppm
Maximum level of chlorine in a pool is:
- correct answer 5ppm
If you see bubbles coming up from a return, the possible cause could be
- correct 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
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
- correct answer d) all of the above
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
- correct answer c) 30 minutes
When doing the pH test and the sample turns yellow, what does it mean?
- correct answer pH is too low
When doing the pH test and the sample turns purple, what does it mean?
- correct answer pH is too high
What do you do if a patron complains of a chlorine smell and their eyes are stinging?
- correct answer Raise the chlorine to Breakpoint Level.
If the telephone at the pool doesn't work
- correct answer close the pool
What should you use when handling chemicals?
- correct answer Personal Protective Equipment - Gloves, Goggles, Apron
What happens if the alkalinity level is too low?
- correct answer pH is difficult to maintain, the water will cause damage to the pool walls
ADD CHEMICALS TO WATER; DO NOT ADD WATER TO CHEMICALS
- correct answer ...
How do you lower the Calcium Hardness Level?
- correct answer Drain water out and add fresh water. Dilute the water.
What should you have if the water is deeper than 5 ft?
- correct answer Put up a safety line
If the chlorinator is working and you have chlorine in the vat, what is a possible reason for the chlorine
reading being 0?
- correct answer The test could be bleached (chlorine level is too high)
