Drinking water filter: the new hype

All of a sudden they can be found everywhere - in supermarkets, drugstores, on the Internet: drinking water filters. They promise the same drinking pleasure as a clear, pure mountain spring, and directly from the tap. It is advertised with health, and with new vitality - on the other hand is often concealed that filters can even make sick first. Read here what's wrong with the new hype.

Drinking water is healthy - water does not always filter

We all drink too little water. The medically calculated water requirement of a healthy adult is about 30 - 40 ml / day per kg of body weight. A man weighing 70 kg would therefore have to consume approx. 2.1 liters to 2.8 liters of pure water every day. Every day.

In a balanced diet, the foods contain up to 0.8 liters of water. This leaves about 1.4 to about 2 liters of water, which we should drink daily. Most of us - hand on heart - do not do that by far.

If now creates a new hype with the filter to animate us at least partially to drink water, which is certainly in the spirit of public health. Chronic dehydration is a major contributor to many diseases.

It is not in the interest of public health, if it happens with partially unverifiable and occasionally even grossly incorrect information and if in the marketing and sales interest possible serious dangers are concealed. And it does not even apply if a product is actually completely unnecessary.

Scientific need of water filtration

From a scientific point of view, it can be said very clearly that the additional filtering of our drinking water is unnecessary. The drinking water quality in Germany from the water pipeline varies from region to region, but nowhere near as dangerous as health.

Bacteria in drinking water are not a problem if they do not exceed a certain level. Moreover, most bacteria do not even get sick: these are only a few strains on which drinking water is tested very precisely. Even with a single proof of a dangerous germ in the water, according to the drinking water ordinance in Germany, the water is no longer released for enjoyment. This applies to all harmful pathogens, such as coliform bacteria.

Pollutants in drinking water are also carefully tested and are at a level that produces no physical effects even when drinking many liters of water. For example, salad from the supermarket contains on average almost 100 times as much nitrate as is permitted in drinking water at all.

Dangers when using drinking water filters

The biggest danger with drinking water filters lies in the contamination of the filter. Over time, germs can accumulate in the filter elements, continue to grow happily and break through the filtered water. This is neither predictable nor visible. The resulting health hazard is enormous.

This can also happen with other, actually filtered out, pollutants. In drinking water, they are harmless, but in the high concentration by the accumulation in the filter, they can be very questionable.

But even silver coatings, which are supposed to prevent bacterial contamination, are capable of possibly causing long-term damage to health.
Therefore, drinking water is highly recommended - and you can safely drink it as it comes from the line. Bottled water is often even inferior in quality, even worse, and ecologically many times more worrying.

On the other hand, water filtration only has to be there where the quality is doubtful: when trekking or in countries with rather questionable drinking water supply.

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