CPO Certified Pool Operator Licensing
Test Questions and Answers
1. To raise PH what may be added to swimming pool water?
A) Bromine
B) Sodium chloride
C) Soda Ash
D) Muriatic Acid
Answer Soda Ash
2. In most jurisdictions the turnover time for s a swimming pool is
A) Every 24 hours
B) Every 12 hours
C) Every 6 hours
D) Every 3 hours
Answer 6 hours
3. What does the term channeling mean when discussing swimming
pool filtra- tion?
A) The dumping of DE powder into the waste water system
B) Discharging waste-water from the pool during backwashing
C) Decreasing the flow rate though a filter
,D) A damaging condition that occurs over time in a sand filter.
Answer A damaging condition that occurs over time in a sand filter.
4. The recommended range to maintain PH is
A) 2.0- 4.0
B) 8.2-9.5
C) 7.2-7.8
D) 1.0-10.0
Answer 7.2 - 7.8
5. To raise alkalinity levels in the swimming pool water what
chemical can be added
A) Muriatic Acid
B) Sodium Bicarbonate
C) Sodium Thiosulfate
D) Hydrogen Peroxide
Answer Sodium Bicarbonate
6. The chemical name of liquid chlorine is
A) Sodium Hypochlorite
B) Calcium Hypochlorite
C) Sodium Chloride
, D) Sodium Bicarbonate
Answer Sodium Hypochlorite
7. Cyanuric acid is sometimes used as a stabilizer in pool water and
must never exceed
A) 1000 parts per million
B) 10 parts per million
C) 250 parts per million
D) 50 parts per million
Answer 50 parts per million (ppm)
8. To clean cartridge filters
A) A stainless steel brush is used
B) Soak the filters overnight in pure muriatic acid
C) Scrub with a strong detergent
D) Soak the cartridges in a degreaser and hose off
Answer Soak it in degreaser and hose it off
9. An elevated reading from the vacuum gauge of a high rate sand
filter may indicate
A) The hair/lint strainer needs to be cleaned
B) The filter needs to be backwashed
Test Questions and Answers
1. To raise PH what may be added to swimming pool water?
A) Bromine
B) Sodium chloride
C) Soda Ash
D) Muriatic Acid
Answer Soda Ash
2. In most jurisdictions the turnover time for s a swimming pool is
A) Every 24 hours
B) Every 12 hours
C) Every 6 hours
D) Every 3 hours
Answer 6 hours
3. What does the term channeling mean when discussing swimming
pool filtra- tion?
A) The dumping of DE powder into the waste water system
B) Discharging waste-water from the pool during backwashing
C) Decreasing the flow rate though a filter
,D) A damaging condition that occurs over time in a sand filter.
Answer A damaging condition that occurs over time in a sand filter.
4. The recommended range to maintain PH is
A) 2.0- 4.0
B) 8.2-9.5
C) 7.2-7.8
D) 1.0-10.0
Answer 7.2 - 7.8
5. To raise alkalinity levels in the swimming pool water what
chemical can be added
A) Muriatic Acid
B) Sodium Bicarbonate
C) Sodium Thiosulfate
D) Hydrogen Peroxide
Answer Sodium Bicarbonate
6. The chemical name of liquid chlorine is
A) Sodium Hypochlorite
B) Calcium Hypochlorite
C) Sodium Chloride
, D) Sodium Bicarbonate
Answer Sodium Hypochlorite
7. Cyanuric acid is sometimes used as a stabilizer in pool water and
must never exceed
A) 1000 parts per million
B) 10 parts per million
C) 250 parts per million
D) 50 parts per million
Answer 50 parts per million (ppm)
8. To clean cartridge filters
A) A stainless steel brush is used
B) Soak the filters overnight in pure muriatic acid
C) Scrub with a strong detergent
D) Soak the cartridges in a degreaser and hose off
Answer Soak it in degreaser and hose it off
9. An elevated reading from the vacuum gauge of a high rate sand
filter may indicate
A) The hair/lint strainer needs to be cleaned
B) The filter needs to be backwashed
