How long should emergency-disinfected water be stored?

• A. 2 weeks
• B. 3 months
• C. 6 months in opaque container
• D. 1 year

Answer: (C)

Storing emergency-disinfected water for up to six months is the best practice when you keep it in the right conditions. Light degrades disinfectant residual and can promote growth or taste changes, so using opaque containers protects the water from sunlight. A clean, sealed container prevents contamination and helps maintain safety, while storing in a cool, dry place minimizes microbial activity and chemical interactions that could affect quality. Rotating the supply at about six months ensures you don’t rely on water that may have degraded or developed off-flavors or odors. If you notice any unusual smell, color, or sediment, discard it and replace with fresh water. Shorter timeframes like two weeks or three months aren’t as reliable for preparedness, and one year risks deterioration and contamination.