Certified Pool Operator Final Exam 2024 / 2025 Expected Questions and Answers (Verified Answers)

The main drain purpose is to - ANSWERS C. remove sediments and is located at the deep end of the pool The pressure differential between gauges on a pressure filter should not exeed - ANSWERS B. 10psi A sequestering agent may be used in a pool to - ANSWERS A. prevent precipitation of minerals on pool surfaces The surface area of the regular swimming pool 30 feet wide and 75 feet long is - ANSWERS C. 2,250 square feet Which of the following conditions contribute to accelerated growth of algae in pools - ANSWERS A. sunlight, hot weather and high bather load Chlorine can be used in which of the following forms - ANSWERS D. all of the above (gas, liquid, powder) There are complaints of red eyes in the swimmers and chlorine odors are present. The alkalinity is 100ppm, the hardness is 240ppm, the pH is 7,4 and the chlorine level is 1.0ppm. What should the operator do? - ANSWERS A. Shock the pool with chlorine To raise pH what may be added to the swimming pool water? - ANSWERS C. Soda ash Low calcium hardness in the pool water will cause - ANSWERS A. Corrosion of the pool fixtures Bromine is sometimes used as a disinfectant - ANSWERS B. Because it is more stable at higher temperatures than chlorine Components and materials used for commercial swimming pools, spas, and hot tubs must comply with what standard - ANSWERS A. ANSI/NSPA Standard 5 A pool should be free of - ANSWERS D. All of the above (floating debris, sediment an dirt, algae) A shepherd's hook must be attached to a - ANSWERS B. 16 foot one piece pole Filtration is - ANSWERS C. the process of removing suspended particles from the water The volume of water going through a filter system is measured - ANSWERS B. In gallons per minute The volume of water in a rectangular pool is 15 feet wide, 50 feet long and has a constant depth of 3 feet - ANSWERS D. 16,830 If a pool has a volume of 75,000 gallons and the turnover rate is 8 hours, the minimum required flow rate is - ANSWERS C. 156.25 gallons per minute Microorganisms can be shielded from disinfectants if they are in suspended particles. This situation is caused by - ANSWERS D. High turbidity levels The chemical name for dry chlorine is - ANSWERS B. Calcium Hypochlorite Adding liquid or dry chlorine to the pool water has the following effects on pH - ANSWERS B. Will raise the pH Alkalinity of swimming pool water is recommended to be maintained at - ANSWERS B. 80-140ppm Chlorine is used in pool water not only to kill germs but to - ANSWERS D. Oxidize organic contaminants To become a certified pool operator a person must - ANSWERS D. Successfully complete training course in pool operations approved by local jurisdiction Handrails should be anchored into the - ANSWERS D. Pool deck and bottom step An aid in removing small particles from the pool water is - ANSWERS B. Flocculent To clean cartridge filters - ANSWERS D. Soaked in degreaser and hosed off The amount of time that it takes for the total volume of the pool water to pass through the circulation system is called - ANSWERS B. Turnover rate Stains on the interior pool surface are usually caused by - ANSWERS D. All of the above (Copper, Manganese, Iron)