HIC Pool & Recreational Water Safety 2

Question 1

What is the minimum required turnover rate for a public swimming pool under most state health codes?

Accepted Answer

Every 6 hours

Answer

Most state codes require public pool water to turn over (be fully recirculated and filtered) at least once every 6 hours.

Question 2

A health inspector finds cyanuric acid levels at 120 ppm in an outdoor pool. What action is required?

Accepted Answer

Dilute the pool water to lower the level

Answer

Cyanuric acid above 100 ppm reduces chlorine effectiveness significantly; the corrective action is to partially drain and refill to dilute the stabilizer.

Question 3

Which enteric pathogen is most commonly associated with recreational water illness (RWI) outbreaks in treated swimming pools?

Accepted Answer

Cryptosporidium parvum

Answer

Cryptosporidium is the leading cause of RWI outbreaks in treated pools because its oocysts are highly chlorine-resistant.

Question 4

Under the Virginia Graeme Baker Pool and Spa Safety Act, what is required on all public pool main drains?

Accepted Answer

Anti-entrapment drain covers meeting ANSI/ASME A112.19.8

Answer

The VGB Act mandates anti-entrapment drain covers that meet the ANSI/ASME A112.19.8 standard to prevent suction entrapment injuries.

Question 5

What is the recommended pH range for pool water to optimize chlorine disinfection efficiency?

Accepted Answer

7.2–7.8

Answer

A pH of 7.2–7.8 keeps hypochlorous acid (the active sanitizing form) at effective concentrations while minimizing irritation.

(HIC) Health Inspector Certification Practice Test

(HIC) Health Inspector Certification Practice Test

HIC Pool & Recreational Water Safety 2