POOL OPS EXAM QUESTIONS WITH
COMPLETE SOLUTIONS
How many water related injuries annually? - Answer-140,000
How many feet deep is needed for diving? - Answer-6 feet
What do built in stairs in shallow areas need? - Answer-A secure handrail
Who is responsible for maintaining the daily pool operation log? - Answer-Certified Pool
Operator
Where is the strongest point of suction in a pool? - Answer-The main drain
How many ladders or stairways must exist in a pool? - Answer-2
What is filtration? - Answer-The physical process of removing suspended particles from
pool water
As dirt accumulates inside a filter - Answer-The amount of water that can pass through
decreases
What is channeling? - Answer-A damaging condition that occurs over time in a sand
filter
What is backwashing? - Answer-The process of removing accumulated particles from
inside a sand filter
What is a typical filter rate of high rate sand filters? - Answer-15-25 gallons per min. per
sq. ft.
What is the volume of water going through a filter system measured in? - Answer-
gallons per minute
What is the turnover rate for a typical pool? - Answer-6 hours
What is the equation for surface area of a rectangular pool? - Answer-Length x width =
surface area
Equation for surface area of circular pool? - Answer-Pi x radius^2
What is the equation for the volume of a pool? - Answer-Length x width x depth x 7.48
, What is a turnover rate? - Answer-The amount of time it takes for the total volume of
pool water to pass through the circulation system
What is the equation for min. Required flow rate? - Answer-Volume / turnover rate / 60
Why does algae form in pools? - Answer-Poor water circulation
What can black algae do? - Answer-Penetrate into the plaster of the pool surface and
cause damage
How do you remove stains from the interior pool surface - Answer-Drain and acid wash
Chlorine gas... - Answer-Requires special handling, heavier than air, must be stored in
rooms that are well ventilated
What is the recommended level of chlorine? - Answer-1-10ppm
How can you remove a chlorine odor? - Answer-Shock the pool
How do you sanitize and remove algae? - Answer-Add chlorine
How do you raise the pH - Answer-Add chlorine
What should you do if the pool becomes cloudy and you can't see the main drain? -
Answer-Close the poil
What does chlorine do? - Answer-Kill germs and oxidizes organic matter
When performing superchlorination to oxidize combined chlorines what level should the
free chlorine be raised to? - Answer-10x level of combined chlorines
What is the max safe temp. for spa pool water? - Answer-104 degrees
What does the main drain do? - Answer-Removes sediments and is located in the deep
end
What does a sequestering agent do? - Answer-Prevent precipitation of minerals on the
surface of the pool
What can lead to accelerated algae growth? - Answer-Sunlight, hot weather, high
bather load
What can high turbidity levels cause? - Answer-Microorganisms to be shielded from
disinfectants if they are suspended particles
COMPLETE SOLUTIONS
How many water related injuries annually? - Answer-140,000
How many feet deep is needed for diving? - Answer-6 feet
What do built in stairs in shallow areas need? - Answer-A secure handrail
Who is responsible for maintaining the daily pool operation log? - Answer-Certified Pool
Operator
Where is the strongest point of suction in a pool? - Answer-The main drain
How many ladders or stairways must exist in a pool? - Answer-2
What is filtration? - Answer-The physical process of removing suspended particles from
pool water
As dirt accumulates inside a filter - Answer-The amount of water that can pass through
decreases
What is channeling? - Answer-A damaging condition that occurs over time in a sand
filter
What is backwashing? - Answer-The process of removing accumulated particles from
inside a sand filter
What is a typical filter rate of high rate sand filters? - Answer-15-25 gallons per min. per
sq. ft.
What is the volume of water going through a filter system measured in? - Answer-
gallons per minute
What is the turnover rate for a typical pool? - Answer-6 hours
What is the equation for surface area of a rectangular pool? - Answer-Length x width =
surface area
Equation for surface area of circular pool? - Answer-Pi x radius^2
What is the equation for the volume of a pool? - Answer-Length x width x depth x 7.48
, What is a turnover rate? - Answer-The amount of time it takes for the total volume of
pool water to pass through the circulation system
What is the equation for min. Required flow rate? - Answer-Volume / turnover rate / 60
Why does algae form in pools? - Answer-Poor water circulation
What can black algae do? - Answer-Penetrate into the plaster of the pool surface and
cause damage
How do you remove stains from the interior pool surface - Answer-Drain and acid wash
Chlorine gas... - Answer-Requires special handling, heavier than air, must be stored in
rooms that are well ventilated
What is the recommended level of chlorine? - Answer-1-10ppm
How can you remove a chlorine odor? - Answer-Shock the pool
How do you sanitize and remove algae? - Answer-Add chlorine
How do you raise the pH - Answer-Add chlorine
What should you do if the pool becomes cloudy and you can't see the main drain? -
Answer-Close the poil
What does chlorine do? - Answer-Kill germs and oxidizes organic matter
When performing superchlorination to oxidize combined chlorines what level should the
free chlorine be raised to? - Answer-10x level of combined chlorines
What is the max safe temp. for spa pool water? - Answer-104 degrees
What does the main drain do? - Answer-Removes sediments and is located in the deep
end
What does a sequestering agent do? - Answer-Prevent precipitation of minerals on the
surface of the pool
What can lead to accelerated algae growth? - Answer-Sunlight, hot weather, high
bather load
What can high turbidity levels cause? - Answer-Microorganisms to be shielded from
disinfectants if they are suspended particles
