Drinking water or potable water is water of sufficiently high quality that it can be consumed or used without risk of immediate or long term harm. Inmost developed countries, the water supplied to households, commerce and industry is all of drinking water standard, even though only a very small proportion is actually consumedor used in food preparation.
Over large parts of the world, humans have inadequate access to potable water and use sources contaminated with disease vectors, pathogens orunacceptable levels of dissolved chemicals or suspended solids. Such water is not potable and drinking or using such water in food preparation leads to widespread acute andchronic illnesses and is a major cause of death in many countries. Reduction of waterborne diseases is a major public health goal in developing countries.
Essential to the survivalof all organisms,water has always been an important and life-sustaining drink to humans. Excluding fat, water composes approximately 70% of the human body by mass. It is acrucial component of metabolic processes and serves as a solvent for many bodily solutes.Health authorities have historically suggested at least eight glasses, eight fluid ounceseach (168 ml), of water per day (64 fluid ounces, or 1.89 litres), and the British Dietetic Association recommends 1.8 litres. The United States Environmental Protection Agencyhas determined that the average adult actually ingests 2.0 litres per day.
Typically, water supply networks deliver potable water, whether it is to be used for drinking,washing or landscape irrigation. One counterexample is urban China, where drinking water can optionally be delivered by a separate tap.
Diego Lopez #16 8A