More that 90% of our body is composed of water. Our daily requirement is 2-3 liters, depending of our body mass. If we exercise, we need a lot more. These are some of basic facts that we know, but there are lots of other facts about the water. Simply, not every water is the Water.
Tap water used to be the most common source of drinking water. But during the last decades, the quality of the tap water decreased. There are several explanations for this; there is less and less clean water, there is more and more population to be supplied and the costs of treatment and transport of tap water is getting higher. Sometimes even the producers of bottled water are silently lobbing for decrease of tap water quality, since that is helping their sales to grow. Solution: Use carbon-based filters to purify water.
Bottled water: Along with decrease of tap water quality, expansion of bottled water happened on market a decade ago, in some countries even more. Today, everybody is producing and selling drinking water. Apart of "traditional" natural water producers, whose core business is water, there are many other entrances in this market. Beer companies, Dairy producers, Soft-Drink Companies and many others are offering bottled water. Still water, sparkling water, flavored water, functional waters, ... just name it. But how should you find good water for you?
First of all, manufacturer of the water should be reliable, with some credibility behind. Production of bottled water is expensive, while the margin is low. This means that only the large companies can generate sufficient profit that can provide a high quality. This does not automatically disqualify the small manufacturers, but simply be cautious. If they offer you filtered tap water, usually classified as table water, than you should better buy the filter by your self. The quality will be the same and you will save money.
Secondly, pay attention to the mineral content. You do not need to be the expert for the minerals. Try to pick water brands with low level of minerals. Low-level mineral water is up to 500 mg / liter. If you chose heavy water of 2-3.000 mg / l for daily consumption, you are risking to overload your kidneys and whole body with excessive amount of minerals.
Especially pay attention to the level of Natrium. The Natrium level should be as lower as possible. Simply, during the normal food intake, we already consume a lot of natrium, through additives and salt. Excessive Natrium intake is increasing the blood pressure. On long run, the Natrium can be the cause of hypertension.
Increased intake of mineral enriched waters can be justifier in some situation. During the hot summer, intensive physical work or during the sport, we loose a lot of minerals. In these situations, controlled intake of mineral waters can be justified.
Thirdly, pay attention for your home budget. Water is the commodity that is consumed in a large quantities. Consuming bottled water can be costly for your budget, since the difference between bottled and tap water is usually more than 1.000 times for the same quantity. Try to combine filtered tap water and bottled water when is necessary.
Finally think about your environment. Every time you consume 0,5l bottle, you are throwing around 25 grams of plastic. 1,5l bottle is weighting between 45 g. and 50 g. Calculate your annual consumption and try to imagine the pile of waste you create. If you still are consuming your favorite bottled water, throw your empty bottle to appropriate waste collector or to deposit claim center.