POOL AND HOT TUB CPO PRACTICE EXAM
PREP | QUESTIONS & ANSWERS |
2026/2027
You are the operator for a pool which is 164 feet long and 80 feet wide. The pool
bottom has a constant slope which is 4 feet deep at the shallow end, and 10 feet
deep at the deep end. What is the volume of this pool in gallons? - correct
answer-f
You operate a pool which uses high rate sand filters. You discover that your filter
tank has developed a major leak and must be replaced. Your pool operates with a
flow rate of 525 GPM. Using a filter media rate (fmr) of 15 gallons per minute,
what size sand filter would you need to replace your damaged filter? - correct
answer-fdsd
Which chemical is used to lower the pH value of pool or spa water? - correct
answer-
You have a 25,000 gallon hotel pool with a calcium hardness level of 170 ppm.
How much calcium chloride (77%) would be required to increase this to 250 PPM?
- correct answer-
The daily opening checklist should be used to: - correct answer-
, Evaporation heat losses from a pool are highest under which environmental
condition? - correct answer-
How much sodium thiosulfate would you need to lower the free chlorine from 18
ppm to 2.0 ppm in an 150,000 gallon pool? - correct answer-
When should you backwash high rate sand filters that have a single pressure
gauge? - correct answer-
Oxidation Reduction Potential testing (ORP) is measured in: - correct answer-
The reagent commonly used to test pH is: - correct answer-
What condition mandates an immediate closure of your swimming pool? - correct
answer-
When mechanical cooling is used on an indoor therapeutic pool facility, the
recommended ASHRAE fresh air exchange rate should be: - correct answer-
The Occupational Safety and Health Administration (OSHA) requires aquatic
facilities to maintain: - correct answer-
An erosion chemical feeder is what type of feeder? - correct answer-
PREP | QUESTIONS & ANSWERS |
2026/2027
You are the operator for a pool which is 164 feet long and 80 feet wide. The pool
bottom has a constant slope which is 4 feet deep at the shallow end, and 10 feet
deep at the deep end. What is the volume of this pool in gallons? - correct
answer-f
You operate a pool which uses high rate sand filters. You discover that your filter
tank has developed a major leak and must be replaced. Your pool operates with a
flow rate of 525 GPM. Using a filter media rate (fmr) of 15 gallons per minute,
what size sand filter would you need to replace your damaged filter? - correct
answer-fdsd
Which chemical is used to lower the pH value of pool or spa water? - correct
answer-
You have a 25,000 gallon hotel pool with a calcium hardness level of 170 ppm.
How much calcium chloride (77%) would be required to increase this to 250 PPM?
- correct answer-
The daily opening checklist should be used to: - correct answer-
, Evaporation heat losses from a pool are highest under which environmental
condition? - correct answer-
How much sodium thiosulfate would you need to lower the free chlorine from 18
ppm to 2.0 ppm in an 150,000 gallon pool? - correct answer-
When should you backwash high rate sand filters that have a single pressure
gauge? - correct answer-
Oxidation Reduction Potential testing (ORP) is measured in: - correct answer-
The reagent commonly used to test pH is: - correct answer-
What condition mandates an immediate closure of your swimming pool? - correct
answer-
When mechanical cooling is used on an indoor therapeutic pool facility, the
recommended ASHRAE fresh air exchange rate should be: - correct answer-
The Occupational Safety and Health Administration (OSHA) requires aquatic
facilities to maintain: - correct answer-
An erosion chemical feeder is what type of feeder? - correct answer-
