What type of container should be used to store emergency-disinfected water?

• A. Transparent glass container
• B. Opaque container
• C. Metal container
• D. Plastic bag

Answer: (B)

Storing emergency-disinfected water in an opaque container protects the disinfectant residual and reduces the chance of light-driven degradation or growth of microorganisms. Light, especially sunlight, can break down chlorine, shortening how long the water remains safe to drink. An opaque, food-grade container blocks this light, helping keep the water potable longer. Transparent glass or plastic would allow light to reach the water, reducing disinfectant effectiveness, while metal can react with the water and plastic bags are prone to punctures or leakage. So, the best choice is an opaque container.