Drinking water

In most developed nations water is piped to homes, and is available on tap. The provision of tap water requires a massive infrastructure of piping, pumps, and water purification works. The cost of tap water is a small fraction of that of bottled water, often as little as a thousandth. ...more on Wikipedia about "Tap water"

Water purification is the removal of contaminants from raw water to produce drinking water that is pure enough for human consumption. Substances that are removed during the process of drinking water treatment include bacteria, algae, viruses, fungi, minerals, and man-made chemical pollutants. Many contaminants can be dangerous—but depending on the quality standards, others are removed to improve the water's smell, taste, and appearance. ...more on Wikipedia about "Water purification"

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