Pool Operators Test QUESTIONS With

Pool Operators Test QUESTIONS With Verified Answers /*-12 Reasons to shut the pool -ANSWER 1. Danger to the public

• chemical readings out of range (chlorine and pH)
• no pool operator
• no lifeguard/ CPR certificate
• bathroom/ drains not working
• pump not working for more than an hour
• chlorinator not working
• flow rate is too low
• can't see the main drain (deepest part of the pool)
• water is below the skimmer
• no phone / landline
• 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 1 / 2

explain the pH scale. -ANSWER 0-6: acidic

7: neutral

8-14: basic

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)

• Sodium Bisulfate/ Dry Acid (1 lb per 10,000 gallons)
• 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) Health Department regulation for total alkalinity? -ANSWER 60-180 must be tested every week for the pool and every day for a spa If total alkalinity is too high? -ANSWER Muriatic Acid If total alkalinity is too low? -ANSWER Sodium Bicarbonate (soda ash) Calcium Hardness -ANSWER hardness is a measure of the mineral content of water (water is referred to as too hard or too soft) Hard Water -ANSWER - produce scaling

• green tint

Soft Water -ANSWER -foams -causes corrosion / destroy all metals surface etching and pitting Health Department regulation for calcium hardness? -ANSWER 150-400

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