CPO EXAM | CERTIFIED POOL
OPERATOR EXAM | QUESTIONS AND
ANSWERS RATED A+ | LATEST
2025/2026 GUIDE
Filter Surface Area Requirement
-Correct Answer-A circular filter tank with a 3 foot diameter and a height of
4 feet will require a filter surface area of 7.07 square feet.
Flow Rate for Rectangular Pool
-Correct Answer-A rectangular swimming pool measuring 32' x 30', with an
average water depth of 5' and a turnover rate of 6 hours, will have a flow
rate of 114.00 gallons per minute.
Turnover Rate
-Correct Answer-The time it takes for the entire volume of water in a pool to
be filtered and recirculated.
Filter Area
,-Correct Answer-The surface area of the filter media used in a pool's
filtering system.
Filter Media Rate
-Correct Answer-The rate at which water is filtered through a specific area
of filter media, typically measured in gallons per minute per square foot.
Evaporation Energy Loss
-Correct Answer-The percentage of energy loss in a pool caused by
evaporation.
Flow Rate
-Correct Answer-The volume of water that is circulated through the pool's
filtering system, typically measured in gallons per minute.
Diatomaceous Earth Filter
-Correct Answer-A type of filter that uses diatomaceous earth as the
filtering medium.
Suction Velocity
-Correct Answer-The maximum speed at which water can flow through the
suction piping of a pump, measured in feet per second.
, Common Disinfectant
-Correct Answer-The most widely used chemical for treating and sanitizing
swimming pool water.
Breakpoint Chlorine
-Correct Answer-The level of chlorine in pool water after all combined
chlorine has been oxidized.
pH Reading
-Correct Answer-The measurement of acidity or alkalinity of pool water.
Total Dissolved Solids (TDS)
-Correct Answer-The total concentration of dissolved substances in pool
water, measured in parts per million.
Water Alkalinity
-Correct Answer-The ability of water to resist changes in pH, typically
measured in parts per million.
Chlorine Gas Dosage
OPERATOR EXAM | QUESTIONS AND
ANSWERS RATED A+ | LATEST
2025/2026 GUIDE
Filter Surface Area Requirement
-Correct Answer-A circular filter tank with a 3 foot diameter and a height of
4 feet will require a filter surface area of 7.07 square feet.
Flow Rate for Rectangular Pool
-Correct Answer-A rectangular swimming pool measuring 32' x 30', with an
average water depth of 5' and a turnover rate of 6 hours, will have a flow
rate of 114.00 gallons per minute.
Turnover Rate
-Correct Answer-The time it takes for the entire volume of water in a pool to
be filtered and recirculated.
Filter Area
,-Correct Answer-The surface area of the filter media used in a pool's
filtering system.
Filter Media Rate
-Correct Answer-The rate at which water is filtered through a specific area
of filter media, typically measured in gallons per minute per square foot.
Evaporation Energy Loss
-Correct Answer-The percentage of energy loss in a pool caused by
evaporation.
Flow Rate
-Correct Answer-The volume of water that is circulated through the pool's
filtering system, typically measured in gallons per minute.
Diatomaceous Earth Filter
-Correct Answer-A type of filter that uses diatomaceous earth as the
filtering medium.
Suction Velocity
-Correct Answer-The maximum speed at which water can flow through the
suction piping of a pump, measured in feet per second.
, Common Disinfectant
-Correct Answer-The most widely used chemical for treating and sanitizing
swimming pool water.
Breakpoint Chlorine
-Correct Answer-The level of chlorine in pool water after all combined
chlorine has been oxidized.
pH Reading
-Correct Answer-The measurement of acidity or alkalinity of pool water.
Total Dissolved Solids (TDS)
-Correct Answer-The total concentration of dissolved substances in pool
water, measured in parts per million.
Water Alkalinity
-Correct Answer-The ability of water to resist changes in pH, typically
measured in parts per million.
Chlorine Gas Dosage
