Purifying Water During an Emergency   The treatments described below work only in situations where the water is unsafe because of the presence of bacteria or viruses. If you suspect the water is unsafe because of chemicals, oils, poisonous substances, sewage or other contaminants, do not use the water for drinking. Storing water safely Store one gallon of water per person per day. Store at least a three-day supply of water per person. Collect the water from a safe supply. Thoroughly washed plastic containers such as soft drink bottles are best. You can also purchase food-grade plastic buckets or drums. Seal water containers tightly, label with date, and store in a cool, dark place. Replace water every six months. Never […]