POOL OPERATOR EXAM 250+ QUESTIONS &
CORRECT ANSWERS LATEST 2025
The main drain purpose is to - ANSWER-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 -
ANSWER-B. 10psi
A sequestering agent may be used in a pool to - ANSWER-A. prevent precipitation
of minerals on pool surfaces
The surface area of the regular swimming pool 30 feet wide and 75 feet long is -
ANSWER-C. 2,250 square feet
Which of the following conditions contribute to accelerated growth of algae in
pools - ANSWER-A. sunlight, hot weather and high bather load
Chlorine can be used in which of the following forms - ANSWER-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? - ANSWER-A. Shock the pool with
chlorine
,To raise pH what may be added to the swimming pool water? - ANSWER-C. Soda
ash
Low calcium hardness in the pool water will cause - ANSWER-A. Corrosion of the
pool fixtures
Bromine is sometimes used as a disinfectant - ANSWER-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 - ANSWER-A. ANSI/NSPA Standard 5
A pool should be free of - ANSWER-D. All of the above (floating debris, sediment
an dirt, algae)
A shepherd's hook must be attached to a - ANSWER-B. 16 foot one piece pole
Filtration is - ANSWER-C. the process of removing suspended particles from the
water
The volume of water going through a filter system is measured - ANSWER-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 - ANSWER-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 - ANSWER-C. 156.25 gallons per minute
Microorganisms can be shielded from disinfectants if they are in suspended
particles. This situation is caused by - ANSWER-D. High turbidity levels
The chemical name for dry chlorine is - ANSWER-B. Calcium Hypochlorite
Adding liquid or dry chlorine to the pool water has the following effects on pH -
ANSWER-B. Will raise the pH
Alkalinity of swimming pool water is recommended to be maintained at -
ANSWER-B. 80-140ppm
Chlorine is used in pool water not only to kill germs but to - ANSWER-D. Oxidize
organic contaminants
To become a certified pool operator a person must - ANSWER-D. Successfully
complete training course in pool operations approved by local jurisdiction
Handrails should be anchored into the - ANSWER-D. Pool deck and bottom step
An aid in removing small particles from the pool water is - ANSWER-B. Flocculent
To clean cartridge filters - ANSWER-D. Soaked in degreaser and hosed off
CORRECT ANSWERS LATEST 2025
The main drain purpose is to - ANSWER-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 -
ANSWER-B. 10psi
A sequestering agent may be used in a pool to - ANSWER-A. prevent precipitation
of minerals on pool surfaces
The surface area of the regular swimming pool 30 feet wide and 75 feet long is -
ANSWER-C. 2,250 square feet
Which of the following conditions contribute to accelerated growth of algae in
pools - ANSWER-A. sunlight, hot weather and high bather load
Chlorine can be used in which of the following forms - ANSWER-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? - ANSWER-A. Shock the pool with
chlorine
,To raise pH what may be added to the swimming pool water? - ANSWER-C. Soda
ash
Low calcium hardness in the pool water will cause - ANSWER-A. Corrosion of the
pool fixtures
Bromine is sometimes used as a disinfectant - ANSWER-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 - ANSWER-A. ANSI/NSPA Standard 5
A pool should be free of - ANSWER-D. All of the above (floating debris, sediment
an dirt, algae)
A shepherd's hook must be attached to a - ANSWER-B. 16 foot one piece pole
Filtration is - ANSWER-C. the process of removing suspended particles from the
water
The volume of water going through a filter system is measured - ANSWER-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 - ANSWER-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 - ANSWER-C. 156.25 gallons per minute
Microorganisms can be shielded from disinfectants if they are in suspended
particles. This situation is caused by - ANSWER-D. High turbidity levels
The chemical name for dry chlorine is - ANSWER-B. Calcium Hypochlorite
Adding liquid or dry chlorine to the pool water has the following effects on pH -
ANSWER-B. Will raise the pH
Alkalinity of swimming pool water is recommended to be maintained at -
ANSWER-B. 80-140ppm
Chlorine is used in pool water not only to kill germs but to - ANSWER-D. Oxidize
organic contaminants
To become a certified pool operator a person must - ANSWER-D. Successfully
complete training course in pool operations approved by local jurisdiction
Handrails should be anchored into the - ANSWER-D. Pool deck and bottom step
An aid in removing small particles from the pool water is - ANSWER-B. Flocculent
To clean cartridge filters - ANSWER-D. Soaked in degreaser and hosed off
