POOL OPERATOR EXAMS 2027 SCRIPT ANSWERS
AND QUESTIONS SET A+
✔✔An elevated reading from the vacuum gauge of a high rate sand filter may indicate
what? - ✔✔Filter needs to be backwashed
✔✔An acceptable level of bromine in a swimming pool is what? - ✔✔8.0 ppm
✔✔Alkalinity is recommended to be maintained at - ✔✔80-120 ppm
✔✔As dirt accumulates inside the filter the amount of water that can pass through the
filter (decreases or increases)? - ✔✔Decreases
✔✔*****The pool operator checks the hypochlorinator and it appears to work properly,
however, there is no chlorine in the pool. What might be the problem? - ✔✔All of the
above ****
✔✔The process of reversing water flow to remove accumulated particles from inside a
sand filter is called what - ✔✔Backwashing
✔✔When you arrive at the pool and test the water, you realize that the free chlorine
level is 0. In order to raise the chlorine level you add liquid chlorine by hand to the pool.
How long must patrons wait before they can go in the pool? - ✔✔30 minutes
✔✔The following is a primary type of algae found in an improperly maintained
swimming pool - ✔✔Green algae
✔✔To lower the pH you may add ______ to the pool - ✔✔Muriatic acid
✔✔Chlorine is used in the pool to do what? - ✔✔Kill germs and OXIDIZE ORGANIC
MATTER
, ✔✔An acceptable level of bromine in a pool is - ✔✔3.0 ppm
✔✔Chloramines are a combination of what in the pool? - ✔✔chlorine and ammonia
✔✔To raise pH you need to add what to the pool - ✔✔Soda Ash
✔✔Cyanuric acid is used as a STABILIZER In the pool and can't exceed what unit -
✔✔50 parts per million (ppm)
✔✔If you add chlorine to the pool does it raise or lower the pH - ✔✔It will raise pH
✔✔A filter backwash cycle is complete when? - ✔✔When the backwash water appears
clear in the sight glass
✔✔Algae primarily forms in a pool because? - ✔✔poor circulation
✔✔When you cannot see the main drain at the bottom of the pool you do what? -
✔✔CLOSE POOL
✔✔Filtration is what? - ✔✔A physical process of removing dirt particles from the pool
water
✔✔Hardness is what? - ✔✔Measure of certain dissolved minerals in the water and its
recommended to be kept between 200 and 400 ppm
✔✔If a pool has a volume of 150000 gallons and the turnover rate is 8, what is is the
minimum flow rate - ✔✔31.25 gallons per minute
✔✔What is the formula for surface area? - ✔✔***length x width
✔✔What is the formula for volume? - ✔✔***length x width x height
✔✔What is the formula for gallons? - ✔✔***l x w x h x 7.48
✔✔What is the formula for circular pool? - ✔✔r x 3.14
✔✔why is high pH a problem? - ✔✔When the pH goes above 7.6, chlorine disinfectants
are less effective in killing bacteria and algae.
The water can become cloudy and scale can form on the equipment, in sand filters and
on the pool walls. High pH can cause itchy skin and eye discomfort.
✔✔Avg turnover rate - ✔✔Big - 6, kiddie - 2
AND QUESTIONS SET A+
✔✔An elevated reading from the vacuum gauge of a high rate sand filter may indicate
what? - ✔✔Filter needs to be backwashed
✔✔An acceptable level of bromine in a swimming pool is what? - ✔✔8.0 ppm
✔✔Alkalinity is recommended to be maintained at - ✔✔80-120 ppm
✔✔As dirt accumulates inside the filter the amount of water that can pass through the
filter (decreases or increases)? - ✔✔Decreases
✔✔*****The pool operator checks the hypochlorinator and it appears to work properly,
however, there is no chlorine in the pool. What might be the problem? - ✔✔All of the
above ****
✔✔The process of reversing water flow to remove accumulated particles from inside a
sand filter is called what - ✔✔Backwashing
✔✔When you arrive at the pool and test the water, you realize that the free chlorine
level is 0. In order to raise the chlorine level you add liquid chlorine by hand to the pool.
How long must patrons wait before they can go in the pool? - ✔✔30 minutes
✔✔The following is a primary type of algae found in an improperly maintained
swimming pool - ✔✔Green algae
✔✔To lower the pH you may add ______ to the pool - ✔✔Muriatic acid
✔✔Chlorine is used in the pool to do what? - ✔✔Kill germs and OXIDIZE ORGANIC
MATTER
, ✔✔An acceptable level of bromine in a pool is - ✔✔3.0 ppm
✔✔Chloramines are a combination of what in the pool? - ✔✔chlorine and ammonia
✔✔To raise pH you need to add what to the pool - ✔✔Soda Ash
✔✔Cyanuric acid is used as a STABILIZER In the pool and can't exceed what unit -
✔✔50 parts per million (ppm)
✔✔If you add chlorine to the pool does it raise or lower the pH - ✔✔It will raise pH
✔✔A filter backwash cycle is complete when? - ✔✔When the backwash water appears
clear in the sight glass
✔✔Algae primarily forms in a pool because? - ✔✔poor circulation
✔✔When you cannot see the main drain at the bottom of the pool you do what? -
✔✔CLOSE POOL
✔✔Filtration is what? - ✔✔A physical process of removing dirt particles from the pool
water
✔✔Hardness is what? - ✔✔Measure of certain dissolved minerals in the water and its
recommended to be kept between 200 and 400 ppm
✔✔If a pool has a volume of 150000 gallons and the turnover rate is 8, what is is the
minimum flow rate - ✔✔31.25 gallons per minute
✔✔What is the formula for surface area? - ✔✔***length x width
✔✔What is the formula for volume? - ✔✔***length x width x height
✔✔What is the formula for gallons? - ✔✔***l x w x h x 7.48
✔✔What is the formula for circular pool? - ✔✔r x 3.14
✔✔why is high pH a problem? - ✔✔When the pH goes above 7.6, chlorine disinfectants
are less effective in killing bacteria and algae.
The water can become cloudy and scale can form on the equipment, in sand filters and
on the pool walls. High pH can cause itchy skin and eye discomfort.
✔✔Avg turnover rate - ✔✔Big - 6, kiddie - 2
