CAT CAT Regulations and Codes 2 — Questions and Answers
Question 1: What is the typical maximum allowable cyanuric acid (stabilizer) level in a public outdoor pool under most state health codes?
- 100 ppm (Correct answer)
- 200 ppm
- 50 ppm
- 300 ppm
Correct answer: 100 ppm
Most state health codes cap cyanuric acid at 100 ppm in public outdoor pools because higher levels reduce chlorine's effectiveness.
Question 2: Which regulation requires aquatic facilities to maintain records of water chemistry tests and inspections?
- State/local health department codes (Correct answer)
- EPA Clean Water Act
- OSHA 1910.38
- NFPA 101
Correct answer: State/local health department codes
State and local health department codes mandate that aquatic facilities keep written records of water chemistry tests, equipment inspections, and corrective actions.
Question 3: Which NEC article governs electrical installations at swimming pools, fountains, and similar installations?
- Article 680 (Correct answer)
- Article 547
- Article 210
- Article 430
Correct answer: Article 680
NEC Article 680 covers the special electrical wiring and bonding requirements for swimming pools, hot tubs, and fountains to prevent electrocution hazards.
Question 4: What does the MAHC specify as the maximum allowed combined chlorine (chloramine) level in a public pool?
- 0.4 ppm (Correct answer)
- 1.0 ppm
- 2.0 ppm
- 0.1 ppm
Correct answer: 0.4 ppm
The MAHC specifies that combined chlorine (chloramines) should not exceed 0.4 ppm to prevent eye and respiratory irritation.
Question 5: Which document must be posted at all commercial aquatic facilities showing bather load limits and operating rules?
- Facility permit and pool rules from the local health authority (Correct answer)
- SDS binders for all chemicals
- OSHA 300 log
- Certificate of liability insurance
Correct answer: Facility permit and pool rules from the local health authority
Most health codes require the facility operating permit and pool rules (including maximum bather load) to be posted in a visible location at the aquatic facility.
Question 6: Under the MAHC, what is the recommended free chlorine range for a standard public pool at a pH of 7.2–7.8?
- 1–10 ppm (Correct answer)
- 0.1–0.5 ppm
- 10–20 ppm
- 0.5–1.0 ppm
Correct answer: 1–10 ppm
The MAHC recommends maintaining 1–10 ppm free chlorine in public pools to ensure effective pathogen inactivation across the allowable pH range.
CAT CAT Regulations and Codes 2
What is the typical maximum allowable cyanuric acid (stabilizer) level in a public outdoor pool under most state health codes?