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CERTIFIED POOL OPERATOR TEST REVIEW
EXAM 2025| BRAND NEW ACTUAL EXAM
WITH 100% VERIFIED QUESTIONS AND
CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
12 Reasons why the health inspector will close your pool ---
ANSWERS___1. pump filter not working for more than an
hour
2. main drain is not visible
3. chemical readings out of range
4. no pool operator (15 minute grace period)
5. no lifeguard or cpr certs present
6. water is below the skimmer line
7. danger to the public
8. chlorinator is not working
9. health inspector is not allowed in
10. bathrooms + drains not working
11. flow rate is too low
12. no phone (landline)
Measuring records as the CPO --- ANSWERS___Operator
must test the water for Cl and pH every hour, and Total
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Alkalinity, Calcium Hardness and Cyanuric Acid once per
week. Records must be maintained on site and available for
at least 2 years at the pool and 3 years total.
5 Factors of Water Balance --- ANSWERS___pH, Total
Alkalinity, Calcium Hardness, Temperature, and total
dissolved liquids
Corrosive water --- ANSWERS___pH is too low, dissolves
everything it contacts
scaling water --- ANSWERS___pH it too high, mineral deposits
on walls or pipes
Regulated pH range --- ANSWERS___7.2-7.8
pH reading is tested with Phenol Red
To lower pH, --- ANSWERS___add muriatic acid
To raise the pH, --- ANSWERS___add sodium carbonate (Soda
Ash)
2. sodium bisulfate
3. carbon dioxide
CERTIFIED POOL OPERATOR TEST REVIEW
EXAM 2025| BRAND NEW ACTUAL EXAM
WITH 100% VERIFIED QUESTIONS AND
CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
12 Reasons why the health inspector will close your pool ---
ANSWERS___1. pump filter not working for more than an
hour
2. main drain is not visible
3. chemical readings out of range
4. no pool operator (15 minute grace period)
5. no lifeguard or cpr certs present
6. water is below the skimmer line
7. danger to the public
8. chlorinator is not working
9. health inspector is not allowed in
10. bathrooms + drains not working
11. flow rate is too low
12. no phone (landline)
Measuring records as the CPO --- ANSWERS___Operator
must test the water for Cl and pH every hour, and Total
, Page |2
Alkalinity, Calcium Hardness and Cyanuric Acid once per
week. Records must be maintained on site and available for
at least 2 years at the pool and 3 years total.
5 Factors of Water Balance --- ANSWERS___pH, Total
Alkalinity, Calcium Hardness, Temperature, and total
dissolved liquids
Corrosive water --- ANSWERS___pH is too low, dissolves
everything it contacts
scaling water --- ANSWERS___pH it too high, mineral deposits
on walls or pipes
Regulated pH range --- ANSWERS___7.2-7.8
pH reading is tested with Phenol Red
To lower pH, --- ANSWERS___add muriatic acid
To raise the pH, --- ANSWERS___add sodium carbonate (Soda
Ash)
2. sodium bisulfate
3. carbon dioxide
