![]() If an athlete drinks too much distilled or tap water after sweating heavily, they may throw off the balance of water and salts in their body. When athletes sweat, they lose both water and salt (SF Fig. ![]() Although human bodies are mostly water, it is important to maintain the correct balance of water and other substances. ![]() It is possible to overhydrate, or have too much water in your body. If people do not like the taste of the water in an area due to the dissolved minerals that give it a distinctive taste, they may prefer the more neutral taste of distilled water.ĭistilled water can be good for people, but they can have too much of a good thing. In areas where the water is contaminated with harmful substances, due to the natural environment or a natural disaster, drinking distilled water can keep people healthy. Many people buy or make their own distilled water. The mineral composition of well water varies from place to place and gives water from different areas their distinctive tastes (SF Fig. In some areas, tap water comes directly from wells and is untreated. Public tap water may also have other minerals intentionally dissolved in it, like fluoride, which prevents tooth decay. Chlorine is used to kill microbes in the water. The pure evaporated water is collected and condensed to form distilled water. As water evaporates, it distills, or leaves the salt behind. In distilled water all of the dissolved substances mixed in water have been removed by evaporation. Pure water is called distilled water or deionized water. Most of the time, pure water has to be created. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Water, H 2O, is a pure substance, a compound made of hydrogen and oxygen. Some of these substances can be observed when the water in seawater evaporates and leaves behind salt. Seawater is a mixture of many different substances.
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