Water is essential for life. The amount of drinking water req. It depends on physical activity, age, health issues, and environmental conditions.It is estimated that the average American drinks about one litre of water a day with 95% drinking less than three liters per day.For those working in a hot climate, up to 16 liters a day may be required.Water makes up about 60% of weight in men and 55% of weight in women.nfants are about 70% to 80% water while the elderly are around 45%.
Typically in developed countries, tap water meets drinking water quality standards, even though only a small proportion is actually consumed or used in food preparation. Other typical uses include washing, toilets, andirrigation. Greywater may also be used for toilets or irrigation. Its use for irrigation however may be associated with risks.Water may also be unacceptable due to levels of toxins or suspended solids. Reduction ofwaterborne diseases and development of safe water resources is a major public healthgoal in developing countries. Bottled water is sold for public consumption in most parts of the world. The word potable came into English from the Late Latin potabilis, meaning drinkable.