CPO CERTIFIED POOL OPERATOR EXAM PREP
TEST PAPER 2026 QUESTIONS AND ANSWERS
VERIFIED 100% CORRECT
◉ Acid. Answer: lowers pH
◉ Total Alkalinity. Answer: ability of the water to maintain ideal pH
◉ Backwash. Answer: cleaning a filter by reversing the flow of water
◉ Sodium Bicarbonate (NaHCO). Answer: baking soda, white powder,
raise alkalinity, small change in pH
◉ Breakpoint Chlorination. Answer: eliminate inorganic material, add
enough chlorine free chlorine to destroy chloramines
◉ Calcium Hardness. Answer: calcium part of the total hardness reading
◉ Chloramines. Answer: Combined Chlorine, forms when chlorine
bonds to ammonia, irritant to eyes and skin, strong smell
TEST PAPER 2026 QUESTIONS AND ANSWERS
VERIFIED 100% CORRECT
◉ Acid. Answer: lowers pH
◉ Total Alkalinity. Answer: ability of the water to maintain ideal pH
◉ Backwash. Answer: cleaning a filter by reversing the flow of water
◉ Sodium Bicarbonate (NaHCO). Answer: baking soda, white powder,
raise alkalinity, small change in pH
◉ Breakpoint Chlorination. Answer: eliminate inorganic material, add
enough chlorine free chlorine to destroy chloramines
◉ Calcium Hardness. Answer: calcium part of the total hardness reading
◉ Chloramines. Answer: Combined Chlorine, forms when chlorine
bonds to ammonia, irritant to eyes and skin, strong smell
