Bottled water can be a convenient and healthy choice for consumers today. According to Iowa State University, water is essential for body temperature regulation, nutrient absorption, and waste removal from the body. Iowa State University says bottled water is now the second highest selling beverage. Types of bottled water include artesian water, mineral water, purified water, sparkling water and spring water. These vary by their source and treatment processes; they also vary in mineral content, so check labels to compare mineral quantities.
Magnesium
Magnesium is an important mineral that aids in proper muscle function and bone health. According to Finewaters.com, adults require 300-400 mg of magnesium per day. This site says most bottled waters supply less than 20 mg of magnesium per liter serving; however, some bottled waters may offer up to 1,000 mg/L. Iowa State University says an ideal bottle of water should contain 90 mg of magnesium per liter serving. Check nutrition labels to compare magnesium content.
Calcium
According to Iowa State University, bottled water should ideally contain twice as much calcium as magnesium, with a good amount at 180 mg/L. Calcium helps build and maintain healthy bones and teeth. In addition, it helps with nerve and muscle function. Finewaters.com says adults need approximately 800 mg of calcium per day. This site says bottled water typically contains 100 mg of calcium per liter; however, some types may contain up to 500 mg/L.
Potassium
Potassium is important for a healthy heart and normal muscle contraction. Finewaters.com says adults need 2 to 4 grams of potassium per day, and that most bottled waters range from 10 mg/L to 1,200 mg/L in potassium supply. Compare nutrition labels on different brands.
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