Certified Pool Operator Exam Preparation
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Total Available Chlorine - CORRECT ANSWER - Sum of free and combined chlorine in
water.
Free Available Chlorine - CORRECT ANSWER - Chlorine available to disinfect water.
pH Level - CORRECT ANSWER - Measure of acidity or alkalinity in water.
Fecal Incident Protocol - CORRECT ANSWER - Raise free chlorine to 17 ppm
immediately.
Sodium Hypochlorite Calculation - CORRECT ANSWER - Amount needed to raise
chlorine levels.
Chloramines - CORRECT ANSWER - Combined chlorine compounds causing irritation.
Chloramine Testing - CORRECT ANSWER - Subtract free chlorine from total chlorine.
Saturation Index - CORRECT ANSWER - Indicates water balance; calculated monthly.
Total Alkalinity - CORRECT ANSWER - Measure of water's buffering capacity.
Calcium Hardness - CORRECT ANSWER - Concentration of calcium in pool water.
, Water Balance Calculation - CORRECT ANSWER - Monthly assessment of pool water
chemistry.
Calcium Chloride Requirement - CORRECT ANSWER - Amount needed to increase
calcium hardness.
Gallons to Fill Pool - CORRECT ANSWER - Volume needed to restore water level.
Spa Water Change Frequency - CORRECT ANSWER - Recommended every 10 days for
health clubs.
Backwashing Frequency - CORRECT ANSWER - When pressure difference is 10-20 psi.
DPD vs OTO Testing - CORRECT ANSWER - DPD preferred for accurate chlorine
measurement.
Safety Equipment Accessibility - CORRECT ANSWER - Must be easily accessible around
the pool.
Filter System Efficiency - CORRECT ANSWER - Diatomaceous earth removes smallest
particles.
Pump Priming Issues - CORRECT ANSWER - Check for leaks and clogged baskets.
Oxidation Reduction Potential (ORP) - CORRECT ANSWER - Measured in millivolts
(mV) for water quality.
High Calcium Hardness Effects - CORRECT ANSWER - Can cause staining and cloudy
water.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Total Available Chlorine - CORRECT ANSWER - Sum of free and combined chlorine in
water.
Free Available Chlorine - CORRECT ANSWER - Chlorine available to disinfect water.
pH Level - CORRECT ANSWER - Measure of acidity or alkalinity in water.
Fecal Incident Protocol - CORRECT ANSWER - Raise free chlorine to 17 ppm
immediately.
Sodium Hypochlorite Calculation - CORRECT ANSWER - Amount needed to raise
chlorine levels.
Chloramines - CORRECT ANSWER - Combined chlorine compounds causing irritation.
Chloramine Testing - CORRECT ANSWER - Subtract free chlorine from total chlorine.
Saturation Index - CORRECT ANSWER - Indicates water balance; calculated monthly.
Total Alkalinity - CORRECT ANSWER - Measure of water's buffering capacity.
Calcium Hardness - CORRECT ANSWER - Concentration of calcium in pool water.
, Water Balance Calculation - CORRECT ANSWER - Monthly assessment of pool water
chemistry.
Calcium Chloride Requirement - CORRECT ANSWER - Amount needed to increase
calcium hardness.
Gallons to Fill Pool - CORRECT ANSWER - Volume needed to restore water level.
Spa Water Change Frequency - CORRECT ANSWER - Recommended every 10 days for
health clubs.
Backwashing Frequency - CORRECT ANSWER - When pressure difference is 10-20 psi.
DPD vs OTO Testing - CORRECT ANSWER - DPD preferred for accurate chlorine
measurement.
Safety Equipment Accessibility - CORRECT ANSWER - Must be easily accessible around
the pool.
Filter System Efficiency - CORRECT ANSWER - Diatomaceous earth removes smallest
particles.
Pump Priming Issues - CORRECT ANSWER - Check for leaks and clogged baskets.
Oxidation Reduction Potential (ORP) - CORRECT ANSWER - Measured in millivolts
(mV) for water quality.
High Calcium Hardness Effects - CORRECT ANSWER - Can cause staining and cloudy
water.
