Reverse osmosis systems have been advertised more and more in recent years in order to purify and improve the quality of one's own drinking water. Whether reverse osmosis systems actually make sense, and what you should also think about, is examined here.
Sense of water purification
Tap water can sometimes be contaminated with traces of substances. In most cases, this is harmless to health, as the Drinking Water Ordinance provides for strict controls and very narrow limit values.
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There is basically no real "need for cleaning" of the tap water. On the other hand, additional soiling can occur due to the line, or also contamination with bacteria, which can be dangerous in some cases.
Reverse osmosis systems also offer protection against as yet unknown or untested substances. It was only a few years ago that hormones were detected in the water, the long-term effects of which are still scientifically unknown. However, the hormonal load is generally classified as harmless.
Waste of resources due to osmosis technology
The osmotic pressure of the tap water must always be exceeded in a reverse osmosis system - that is, the system must always work with a pressure of more than 3 bar. That requires a lot of electricity and is not necessarily ecological just for improving the quality of actually clean drinking water.
However, the water consumption of such a system has the greatest impact. Most systems require between 3 and 10 liters of drinking water to produce one liter of clean water.
If the system is operated for the whole house, the total water consumption increases up to ten times. This also means ten times the water costs.
In the case of under-counter systems, however, only the drinking water consumption actually has to be taken into account. For the softening of tap water, softening systems based on ion exchangers are certainly more sensible and economical.
Health effects of water
Especially pure water is actually not that good for our organism because it lacks natural mineralization. Osmosis water removes important minerals from the body when drinking - since most people already have a serious mineral deficiency due to poor nutrition, this cannot necessarily be viewed as positive.Tips & Tricks Before buying a system, the advantages and disadvantages should always be carefully considered. The quality of the system should always be the main criterion, as well as the water consumption.