Pool Operator Study Guide Questions
and Correct Answers 2026
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.
IfIItheIItelephoneIIatIItheIIpoolIIdoesn'tIIworkII-II<CORRECTIIANSWERII>>closeIItheIIpool
WhatIIshouldIIyouIIuseIIwhenIIhandlingIIchemicals?II-
II<CORRECTIIANSWERII>>PersonalIIProtectiveIIEquipmentII-IIGloves,IIGoggles,IIApron
WhatIIhappensIIifIItheIIalkalinityIIlevelIIisIItooIIlow?II-
II<CORRECTIIANSWERII>>pHIIisIIdifficultIItoIImaintain,IItheIIwaterIIwillIIcauseIIdamageIItoIItheIIpoolIIwall
s
ADDIICHEMICALSIITOIIWATER;IIDOIINOTIIADDIIWATERIITOIICHEMICALSII-II<CORRECTIIANSWERII>>...
HowIIdoIIyouIIlowerIItheIICalciumIIHardnessIILevel?II-
II<CORRECTIIANSWERII>>DrainIIwaterIIoutIIandIIaddIIfreshIIwater.IIDiluteIItheIIwater.
WhatIIshouldIIyouIIhaveIIifIItheIIwaterIIisIIdeeperIIthanII5IIft?II-
II<CORRECTIIANSWERII>>PutIIupIIaIIsafetyIIline
IfIItheIIchlorinatorIIisIIworkingIIandIIyouIIhaveIIchlorineIIinIItheIIvat,IIwhatIIisIIaIIpossibleIIreasonIIforIItheII
chlorineIIreadingIIbeingII0?II-
II<CORRECTIIANSWERII>>TheIItestIIcouldIIbeIIbleachedII(chlorineIIlevelIIisIItooIIhigh)
WhatIIkindIIofIIfilterIImediaIIfiltersIItheIIsmallestIIparticles?II-
II<CORRECTIIANSWERII>>DiatomaceousIIEarthII(DE)
and Correct Answers 2026
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.
IfIItheIItelephoneIIatIItheIIpoolIIdoesn'tIIworkII-II<CORRECTIIANSWERII>>closeIItheIIpool
WhatIIshouldIIyouIIuseIIwhenIIhandlingIIchemicals?II-
II<CORRECTIIANSWERII>>PersonalIIProtectiveIIEquipmentII-IIGloves,IIGoggles,IIApron
WhatIIhappensIIifIItheIIalkalinityIIlevelIIisIItooIIlow?II-
II<CORRECTIIANSWERII>>pHIIisIIdifficultIItoIImaintain,IItheIIwaterIIwillIIcauseIIdamageIItoIItheIIpoolIIwall
s
ADDIICHEMICALSIITOIIWATER;IIDOIINOTIIADDIIWATERIITOIICHEMICALSII-II<CORRECTIIANSWERII>>...
HowIIdoIIyouIIlowerIItheIICalciumIIHardnessIILevel?II-
II<CORRECTIIANSWERII>>DrainIIwaterIIoutIIandIIaddIIfreshIIwater.IIDiluteIItheIIwater.
WhatIIshouldIIyouIIhaveIIifIItheIIwaterIIisIIdeeperIIthanII5IIft?II-
II<CORRECTIIANSWERII>>PutIIupIIaIIsafetyIIline
IfIItheIIchlorinatorIIisIIworkingIIandIIyouIIhaveIIchlorineIIinIItheIIvat,IIwhatIIisIIaIIpossibleIIreasonIIforIItheII
chlorineIIreadingIIbeingII0?II-
II<CORRECTIIANSWERII>>TheIItestIIcouldIIbeIIbleachedII(chlorineIIlevelIIisIItooIIhigh)
WhatIIkindIIofIIfilterIImediaIIfiltersIItheIIsmallestIIparticles?II-
II<CORRECTIIANSWERII>>DiatomaceousIIEarthII(DE)
