Pool and Hot tub CPO practice EXAM
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) 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 Answers ✅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 Answers ✅fdsd Which chemical is used to lower the pH value of pool or spa water? - Correct Answers ✅ 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 Answers ✅
The daily opening checklist should be used to: - Correct
Answers ✅ Evaporation heat losses from a pool are highest under which environmental condition? - Correct Answers ✅ 1 / 2
Pool and Hot tub CPO practice EXAM
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) 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 Answers ✅ When should you backwash high rate sand filters that have a single pressure gauge? - Correct Answers ✅
Oxidation Reduction Potential testing (ORP) is measured in: -
Correct Answers ✅
The reagent commonly used to test pH is: - Correct
Answers ✅ What condition mandates an immediate closure of your swimming pool? - Correct Answers ✅ When mechanical cooling is used on an indoor therapeutic pool facility, the recommended ASHRAE fresh air exchange
rate should be: - Correct Answers ✅
The Occupational Safety and Health Administration (OSHA)
requires aquatic facilities to maintain: - Correct Answers ✅
An erosion chemical feeder is what type of feeder? - Correct Answers ✅
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