Pool Operators Test Exam Questions With
Verified Answers.
12 Reasons to shut the pool - answer✔1. Danger to the public
2. chemical readings out of range (chlorine and pH)
3. no pool operator
4. no lifeguard/ CPR certificate
5. bathroom/ drains not working
6. pump not working for more than an hour
7. chlorinator not working
8. flow rate is too low
9. can't see the main drain (deepest part of the pool)
10. water is below the skimmer
11. no phone / landline
12. health inspector not allowed in
What is the lifeguard to swimmer ratio? - answer✔50-1
Certified Pool Operator must be how far in order for the pool to open? - answer✔15 minutes
How often should readings for pH and chlorine take place - answer✔every 1 hour
How long do records need to be held? - answer✔2 years at the pool and 3 years total
What is they key to a safe facility? - answer✔Prevention
Most drownings of victims happen when? - answer✔under 4 feet of water
under 4 feet tall
under 7 years old
What does water balance consist of? (5) - answer✔pH, Total Alkalinity, Calcium Hardness,
Temperature, and Total Dissolved solids
(chlorine only disinfects water, it does not maintain sanitary qualities)
when does corrosive water happen? - answer✔-when the water balance is too low
-satisfies its hunger by dissolving it comes in contact with
-attacks metals and iron
When does scaling water happen? - answer✔- when water balance is too high
-relieve its overfed condition by releasing precipitates as scale , cloudiness, and residue
what is pH? - answer✔how basic or how acidic a solution is
what is the pH of the human eye? - answer✔7.5 --> so a pool should try to maintain 7.5 also
Health Department regulation for pH and how often it should be checked - answer✔7.2-7.8 and
every 1 hour for pool and spa
what is phenol red? - answer✔-what the pH value is tested with
If the pH of the water is too high what should you do? - answer✔1. Muriatic Acid (12 oz per
10,000 gallons to decrease pH by 0.2 units)
2. Sodium Bisulfate/ Dry Acid (1 lb per 10,000 gallons)
3. Carbon Dioxide
If the pH of the water is too low what should you do? - answer✔Sodium Carbonate (Soda Ash) -
6 oz per 10,000 gallons to increase pH by 0.2
What is Total Alkalinity - answer✔- represents the amount of carbonates, bicarbonates, and
hydroxides in a solution
- the ability if a solution to resist change in pH
pH Bounce - answer✔when the total alkalinity is too low their will be wide fluctuations of pH
(can be so unpredictable it can change hour to hour)
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