The amount of drinking water required varies. It depends on physical activity, age, health awwa c950 pdf free download, and environmental conditions.

For those who work in a hot climate, up to 16 liters a day may be required. Water is essential for life. Its use for irrigation however may be associated with risks. Water may also be unacceptable due to levels of toxins or suspended solids. The amount of drinking water required is variable. It depends on physical activity, age, health, and environmental conditions.

In a temperate climate under normal conditions, adequate water intake is about 2. Physical exercise and heat exposure cause loss of water and therefore may induce thirst and greater water intake. 18 which includes drinking water, water in beverages, and water contained in food. An individual’s thirst provides a better guide for how much water they require rather than a specific, fixed quantity. The drinking water contribution to mineral nutrients intake is also unclear. Treatment processes also lead to the presence of some minerals.

There are a variety of trace elements present in virtually all potable water, some of which play a role in metabolism. Potable water is available in almost all populated areas of the Earth, although it may be expensive and the supply may not always be sustainable. Springs are often used as sources for bottled waters. For these water sources to be consumed safely, they must receive adequate treatment and meet drinking water regulations.

The most efficient way to transport and deliver potable water is through pipes. Plumbing can require significant capital investment. Some systems suffer high operating costs. Leakage of untreated and treated water from pipes reduces access to water. Because of the high initial investments, many less wealthy nations cannot afford to develop or sustain appropriate infrastructure, and as a consequence people in these areas may spend a correspondingly higher fraction of their income on water. In the USA, the typical single family home consumes 69. In some parts of the country water supplies are dangerously low due to drought and depletion of the aquifers, particularly in the West and the South East region of the U.