CPO Practice Exam

1. According to CDC and PHTA guidelines, if a diarrheal fecal accident occurs in a public pool, the operator must close the pool, achieve a 20 ppm Free Chlorine residual, and maintain it for a specific holding period to reach the inactivation CT value for which resilient pathogen?

A) Cryptosporidium B) Giardia lamblia C) Norovirus D) E. coli

2. What undesirable chemical compound is produced when Free Available Chlorine reacts with ammonia, urea, and nitrogenous organic bather wastes?

A) Hypochlorous Acid B) Cyanuric Acid C) Chloramines (Combined Chlorine) D) Sodium Chloride

3. When water pressure forces permanent, low-resistance paths through a sand filter bed and allows dirty water to bypass filtration, what is this failure called?

A) Flocculation B) Channeling C) Media Calcification D) Mudballing

4. To comply with the federal Virginia Graeme Baker (VGB) Pool and Spa Safety Act, what physical strategy must be maintained at all suction outlets?

A) Approved anti-entrapment drain covers must be securely installed over split or unblockable main drains. B) Warning signs must be posted around the pool perimeter. C) Pump motor velocity must be maxed out to clear obstructions. D) Operators must verify line pressure settings daily.

5. Which common sanitizer has an alkaline pH of approximately 9.0 to 14.0, causing the pool's pH to rise over time if it isn't adjusted with acid?

A) Gas Chlorine B) Trichlor Tablets C) Dichlor Granules D) Sodium Hypochlorite (Liquid Chlorine)

6. A rectangular public pool is 75 feet long and 30 feet wide. The shallow end is 3 feet deep, and the deep end drops to 9 feet deep. What is the total volume of the pool in gallons?

A) 151,875 gallons B) 202,500 gallons C) 101,250 gallons D) 13,500 gallons

7. Your pool volume is 40,000 gallons. Your current Total Alkalinity reading is 60 ppm, and your target is 90 ppm. How many pounds of Sodium Bicarbonate do you need to add?

A) 18.0 lbs B) 14.0 lbs C) 4.2 lbs D) 16.8 lbs

8. A 30,000-gallon pool has a Total Chlorine (TC) of 3.5 ppm and a Free Chlorine (FC) of 2.5 ppm. How much Sodium Hypochlorite (12%) do we need to add to reach Breakpoint Chlorination? (Convert to Gallons).

A) 0.25 gallons B) 1.88 gallons C) 2.50 gallons D) 3.12 gallons

9. A commercial pool has a total calculated volume of 72,000 gallons. State codes mandate a minimum 6-hour turnover rate for this facility type. What is the required design flow rate in Gallons Per Minute (GPM)?

A) 12,000 GPM B) 150 GPM C) 200 GPM D) 120 GPM

10. A pool system operates at a flow rate of 120 Gallons Per Minute (GPM). It utilizes high-rate sand filtration, which possesses a maximum design filtration rate of 15 GPM per square foot. What is the minimum required filter surface area in square feet?

A) 8.0 sq ft B) 18.0 sq ft C) 12.5 sq ft D) 6.0 sq ft

CPO Comprehensive Practice Test

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