Drinking water supplies are routinely tested for the presence of fecal coliforms.
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions.
Recent work showed that the most important driver of water turnover which is closely linked to water requirements is energy expenditure For those who work in a hot climate, up to 16 litres (4.2 US gal) a day may be required.
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 for tap water include washing, toilets, and irrigation
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