CERTIFIED POOL OPERATOR HANDBOOK PRACTICE

CERTIFIED POOL OPERATOR HANDBOOK PRACTICE

TEST --CERTIFIED

POOL OPERATOR LATEST EXAM WITH 300+ QUESTIONS

AND CORRECT ANSWERS (GUARANTEED PASS!)

• You are the CPO for a 28,000 gallon hotel pool. You perform a water balance

chemical test, and to your surprise, the Calcium Hardness is only 100 ppm. How much calcium chloride (77%) would be required to increase this to 400 ppm?" - ANSWER-100.8 lbs.

• Assuming that your local health department requires you to raise the free

chlorine to 5 ppm, how much sodium hypochlorite would be needed to raise the free chlorine in the pool in question #1 to that level? - ANSWER-3.5 gallons

• You are the CPO for a 100 foot long, 50 foot wide country club pool. The

average depth of this pool is 7 feet. You return to the pool on Monday morning, after a rare weekend off, and find that the auto-fill feature has failed to work, and the pool water level is four inches too low. How many gallons of water must be added to return the water to the proper level? - ANSWER-12,495 gallons

• You are the operator of a 3,000 gallon health club spa, which has an average of

100 users per day. According to the CPO Handbook, how often should the water in this spa be changed? - ANSWER-10 days

• You operate a 45,000 gallon indoor pool, and upon doing your hourly chemical

tests you observe the following readings:Total available chlorine is 2.2 Free

available chlorine is 1.4 and pH is 7.6 What is the level of chloramines in this pool? - ANSWER-0.8

• You are the operator of a 330,000 gallon outdoor pool. Your local health

department requires you to perform a water balance calculation once monthly.Upon performing the water tests necessary to perform this calculation, you observe the following readings in your pool: Total alkalinity is 50 ppm pH is 7.2 Calcium Hardness is 150 ppm Temperature is 76 degrees F Total Dissolved Solids is 500 ppm Using these readings, what is the Saturation Index for this pool? - ANSWER-- 0.8

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• To adjust the tested Total Alkalinity in the pool in question #7 to an acceptable

level, which chemical would be most appropriate? - ANSWER-Sodium Bicarbonate

• To adjust the tested pH in the pool in question #7 to an acceptable level, which

chemical would be most appropriate? - ANSWER-Sodium Carbonate

• You operate a 120,000-gallon pool, and upon performing your hourly chemical

tests you observe the following readings: Total Available Chlorine reading is 1.6 free available chlorine reading is 1.5 pH is 7.4 Your supervising lifeguard has just informed you that you have had a fecal incident occur; a solid stool has been discharged into the pool. According to the Centers for Disease Control, as the

CPO, you should do the following: - ANSWER-clear the pool and raise the free

chlorine to 2 ppm

• You are the CPO for an indoor health club pool. The facility manager informs

you that he is receiving complaints about a strong chlorine odor in the pool area, and several members have complained of eye irritation. The most likely cause of

these complaints is: - ANSWER-high levels of chloramines in the pool

• To determine the level of chloramines in the water, you should do which of the

following? - ANSWER-test for total chlorine and free chlorine, then subtract the free chlorine number from the total chlorine

"13. You are the CPO for a large municipal swimming pool. This pool has a volume of 560,000 gallons of water,and has an average daily bather load of 1300 people. The pool is operated using high rate pressure sand filters. How often should you backwash the filters?" - ANSWER-When the influent and effluent gauges are 10 to 20 psi apart

• In testing for Chlorine/Bromine in a commercial pool, DPD is preferred over

OTO because: - ANSWER-OTO only tests for Total Chlorine

15. Safety and rescue equipment should always be: - ANSWER-Kept easily

accessible around the pool

• Which type of filter system will remove the smallest micron particles? -

ANSWER-diatomaceous earth 2 / 4

• If the pump fails to prime, which of the following does not have to be checked?
• ANSWER-filter system pressure is too high

• Oxidation Reduction Potential testing (ORP) is measured in? - ANSWER-mV

• High calcium hardness can result in what condition? - ANSWER-cloudy water

20. Head first entry dives are: - ANSWER-only allowed in areas of the pool that

are not marked as 'NO DIVING'

21. Opening and closing checklists: - ANSWER-all of the above

• You can become sick from ingesting water infected with Legionella bacteria -

ANSWER-false

23. Channeling of filters occurs when: - ANSWER-the FMR is exceeded, and

water cuts a channel through the media

• The only physical factor that affects water balance is: - ANSWER-temperature

• To be classified as a disinfectant, a compound must kill or inactivate 99.9% of

contaminants as well as: - ANSWER-leave a measurable residual in the water

• Pools using chlorine gas as a disinfectant produce hydrochloric acid, which can

be neutralized with: - ANSWER-caustic soda or soda ash

• When balancing swimming pool water, the following should be adjusted first: -

ANSWER-total alkalinity

• A spa with water tested as pH 7.2, temperature 103, calcium hardness 600, total

alkalinity 120, and tds of 1,500 will be: - ANSWER-scale forming

29. When performing a water test, sample water should be collected: - ANSWER-

18 inches below the surface, away from return line

30. Swimming pool circulation systems should be adjusted to remove: -

ANSWER-75% from the surface

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31. Vacuuming of the pool bottom should be done: - ANSWER-after foreign

matter has settled

• You are a service tech and have gotten a contract to maintain a small motel

pool. Upon examining the operational records, you find that the number of gallons in the pool is not listed in the records. You visit the pool and observe that it is a fairly rectangular concrete pool, with the following dimensions: length = 40 feet; width = 20 feet. The pool bottom slope is constant from the shallow end, which is

• feet deep, to the deep end, which is 8 feet deep. What is the total number of

gallons of water in this pool? - ANSWER-33,000 gallons

• b.)You are a service tech and have gotten a contract to maintain a small motel

pool. Upon examining the operational records, you find that the number of gallons in the pool is not listed in the records. You visit the pool and observe that it is a fairly rectangular concrete pool, with the following dimensions: length = 40 feet; width = 20 feet. The pool bottom slope is constant from the shallow end, which is

• feet deep, to the deep end, which is 8 feet deep.B). To achieve a 6 hour TOR in

this pool, what flow rate would be needed? - ANSWER-92 GPM

• c.) You are a service tech and have gotten a contract to maintain a small motel

pool. Upon examining the operational records, you find that the number of gallons in the pool is not listed in the records. You visit the pool and observe that it is a fairly rectangular concrete pool, with the following dimensions: length = 40 feet; width = 20 feet. The pool bottom slope is constant from the shallow end, which is

• feet deep, to the deep end, which is 8 feet deep.C). You notice a clear greenish

tint to the water. What could be the problem? - ANSWER-presence of copper

"33. You are the aquatics manager at a very busy local gym that is open 24 hours per day, 7 days per week. This gym has a 1,850 gallon spa. This spa is in almost constant use with about 100 bathers per day using the spa (on - ANSWER-

average). You begin to get complaints from the bathers that their eyes are burning and their skin itches after soaking." - ANSWER-6 days

• When performing a color matching water test, when using the comparator, you

should: - ANSWER-hold the sample up to the horizon opposite the sun or a

daylight illuminator

• Which of the following would not be considered an acceptable ADA access

method? - ANSWER-corner steps with a vertical rise of less than 11 inches

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