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Certified Pool Operator Study Guide
Questions and Correct Answers
11 Reasons for Pool Closure Ans: 1. lifeguard on pool deck
2. Main drain is not clearly, visible from the nearest lifeguard chair
3. Free chlorine, total bromine, ph and cyanic acid readings of pool
where otherwise specified under Section 2, B.1
4. Recirculating equipment is not working properly for more than
1 hour
5.Water level is below the skimmers in pools
6. Chemical disinfectant feeder has not been functional for 24
hour period
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7. Bathhouse drainage system is blocked sufficiently to render
bathhouse unusable
8. Director has been wrongly denied permission to inspect the
pool pursuant to chapter 51
9. A licensed Montgomery county pool operator is not immediate
control of the pool
10. Director determines that an immediate hazard exists to the
health or safety of the users of any pool
11. At least one lifeguard currently certified in infant/child/adult
CPR is not within the pool enclosure.
Health regulation for CPO is Ans: 16 years old; approved course;
75% or better
CPO Must be at the facility _______ prior; for what reason Ans: 30
Minutes prior to open; to measure, record and adjust
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Chlorine and PH must be tested every _____ hours for a pool; every
_____ hour for a spa Ans: 2 hours for pool; 1 hour for spa
Records of chemical readings must be maintained and available
for at least ______ years; and _____ years total Ans: 2 years @
pool; 3 years total
Must close a pool or spa when: ____ ( Hint 7 items) Ans: 1.
residual disinfection levels are not within required ranges.
2. Sanitary water quality has coliform bacteria levels within the
acceptable ranges
3. Water chemistry levels are not within proper ranges
4. Water clarity is not acceptable according to local standards
5. Recirculation or disinfection system is malfunctioning
6. When protection of the public health, safety, welfare
imperatively requires emergency action.
© 2025 All rights reserved
Certified Pool Operator Study Guide
Questions and Correct Answers
11 Reasons for Pool Closure Ans: 1. lifeguard on pool deck
2. Main drain is not clearly, visible from the nearest lifeguard chair
3. Free chlorine, total bromine, ph and cyanic acid readings of pool
where otherwise specified under Section 2, B.1
4. Recirculating equipment is not working properly for more than
1 hour
5.Water level is below the skimmers in pools
6. Chemical disinfectant feeder has not been functional for 24
hour period
© 2025 All rights reserved
, 2 | Page
7. Bathhouse drainage system is blocked sufficiently to render
bathhouse unusable
8. Director has been wrongly denied permission to inspect the
pool pursuant to chapter 51
9. A licensed Montgomery county pool operator is not immediate
control of the pool
10. Director determines that an immediate hazard exists to the
health or safety of the users of any pool
11. At least one lifeguard currently certified in infant/child/adult
CPR is not within the pool enclosure.
Health regulation for CPO is Ans: 16 years old; approved course;
75% or better
CPO Must be at the facility _______ prior; for what reason Ans: 30
Minutes prior to open; to measure, record and adjust
© 2025 All rights reserved
, 3 | Page
Chlorine and PH must be tested every _____ hours for a pool; every
_____ hour for a spa Ans: 2 hours for pool; 1 hour for spa
Records of chemical readings must be maintained and available
for at least ______ years; and _____ years total Ans: 2 years @
pool; 3 years total
Must close a pool or spa when: ____ ( Hint 7 items) Ans: 1.
residual disinfection levels are not within required ranges.
2. Sanitary water quality has coliform bacteria levels within the
acceptable ranges
3. Water chemistry levels are not within proper ranges
4. Water clarity is not acceptable according to local standards
5. Recirculation or disinfection system is malfunctioning
6. When protection of the public health, safety, welfare
imperatively requires emergency action.
© 2025 All rights reserved
