A normally active person needs to drink at least 2 litres of water daily. Children, nursing mothers, and ill people need more. Additional water is necessary for food preparation and hygiene. At least 4 litres per person per day should be stored. Water should be stored in clean and sanitary containers.
Plastic containers are good because they are lightweight and unbreakable.
Glass containers are non-permeable but they are also breakable and heavy. Metal containers should be be considered as a last resort because they may corrode and tend to give water an unpleasant taste. Purifying contaminated water. In addition to having a bad odor and taste, contaminated water contain micro-organisms that cause diseases such as dysentery, cholera, typhoid, and hepatitis. All water of uncertain purity should be purified prior to use.