Whether tap water or bottled water is healthier depends on where the water comes from and how it's treated and stored. Bacteria, parasites and chemical contamination can occur in some tap water, reducing its safety and jeopardizing your health. If water is not stored properly, contaminants from the plastic containers can leach into bottled water -- again, jeopardizing your health. Finally, bottled and tap water can differ in whether they contain minerals or fluoride.
Sources of Bottled Water
Artesian water is collected via a deep well from between layers of rock, sand and earth. Spring water flows naturally to the surface or through a bore hole used to tap a spring. Mineral water is from a geologically protected underground source; it must naturally contain at least 250 ppm of minerals and trace elements, the amounts of which must remain constant. Purified water is water from any source that is treated to render it free of chemicals and microbes. Finally, much of the bottled water found on store shelves is from a municipal water supply; in other words, it's tap water.
Contaminants
If your tap water comes from a well or cistern, check it regularly for bacteria, parasites and other contaminants. If you use city water, check with the city regarding the quality of the water. Using filters in your home can help ensure your tap water's safety regardless of its source. Read the label on bottled water or ask the manufacturer how the water is treated. If you use bottled water, keep it refrigerated. Storing bottled water at or above room temperature can result in plastic contaminants leaching from the bottle into the water.
Fluoride
Fluoride is a chemical shown to help prevent tooth decay. It occurs naturally in some water, and many municipal water treatment plants add it to water. If bottled water contains added fluoride, it is required by law to say so on the label, but most bottlers do not add it. Some people believe Americans are exposed to too much fluoride, while others are convinced of its benefits. Your stand on this issue can be a factor in deciding whether you think bottled water or your tap water is healthier.
Chlorine and Pipes
Water treatment plants often disinfect with chlorine, which can leave a taste, but point-of-use filters can remove chlorine before it leaves your tap. Bottled water that is not from a city supply is disinfected using methods that do not leave a taste, such as with ultraviolet light. Taste and purity also are affected by the water's source, its mineral content and, in the case of tap water, the pipes it travels through. Again, point-of-use filters can remove unwanted minerals and contaminants from old pipes, leaving healthier water coming out of your tap.
Member Comments