Osmosis Water – That’s Behind It

By using an additional filter, osmosis water promises a highly pure water quality. We explain exactly what reverse osmosis water is and present the advantages and disadvantages.

What is reverse osmosis water?

Osmosis water is most commonly produced through the use of a reverse osmosis filter.

  • The reverse osmosis filter has a semi-permeable membrane and only works in one direction.
  • The membrane, through which the water is sent at high pressure, only allows the smallest particles, namely the water molecules, to pass through. This is possible because the membrane is micro-perforated; microscopically fine pores were burned into them during production.
  • Other substances such as nitrate or heavy metals, but also minerals, are filtered out. Even drug residues, such as antibiotics, can be filtered out of the water.
  • The reverse osmosis system is often combined with other filters. Activated carbon filters are supposed to improve the taste of the water, for example.

What are the advantages and disadvantages of reverse osmosis water?

The water from the tap in Germany is one of the cleanest in the world, but reverse osmosis filtration can offer some advantages.

  • Dangerous substances, for which there are no limit values ​​in the drinking water ordinance, are no longer contained in the osmosis water. This includes, for example, bisphenol A. Even in your own household, the water can be contaminated by outdated lead pipes.
  • Minerals such as magnesium or zinc are also removed from the water by the filter, which can lead to deficiency symptoms. It is possible to remineralize the osmosis water, which significantly improves the quality.
  • The filter itself can also cause problems. If it is used too seldom or not replaced regularly, bacteria and germs can form and contaminate the water.
  • The perspective of environmental protection should also be considered before purchasing a reverse osmosis filter. Three liters of tap water have to be filtered for one liter of osmosis water, and the power consumption of the filter, although small, is also an issue.
  • All in all, tap water should always be tested before purchasing a reverse osmosis filter. The filter is worthwhile if, for example, the water is polluted by in-house pipes.

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