详细信息
Not one drop of the water we consume every day is comprised exclusively of hydrogen and oxygen molecules. It contains some amount of minerals, impurities, microorganisms and other contaminants. These substances may be present in only trace amounts, and don’t necessarily have negative health effects.
The United States enjoys one of the best supplies of drinking water in the world. However, while tap water that meets federal and state standards is generally safe to drink, threats to drinking water are increasing. Actual incidences of drinking water contamination are rare, and typically do not occur at levels likely to pose health concerns. Nevertheless, a wide variety of issues have the potential to contaminate drinking water. Likewise, drinking water that is not properly treated or disinfected, or that travels through an improperly maintained distribution system, may also pose a health risk.
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| 地址 | , Las Vegas, Nevada, 89120, USA |
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| 网站 | http://wqa.org |