Drinking water quality - what matters


What makes good drinking water? And which quality guidelines generally apply to good and healthy drinking water? How can you increase the quality of drinking water even further? An answer to all these questions is given in detail in this article.

Classification as drinking water

In Germany, only drinking water is considered, which meets the requirements of the Drinking Water Ordinance.

The Drinking Water Ordinance sets limit values ​​for all important substances which must not be exceeded. The philosophy of the individual limit values ​​is designed differently.

On the one hand, it is about the definition of so-called maximum concentrations for all substances that can be harmful to health in higher doses.

On the other hand, the so-called "zero limit" applies, which applies, for example, to pesticides. It stipulates that only a maximum of five parameters may even be at the limit of detectability in a laboratory examination. If several mixtures of substances are detected, the water is considered contaminated.

Individual substances also serve as indicators - both in the chemical and microbiological fields. Thus, the presence of individual germs is also regarded as an indication of other, similar germs and when a certain number of germs is exceeded, the water is automatically considered contaminated. Thus, sulfate-consuming bacteria can also serve as an indication for enrichment with certain sulfates.

The German Drinking Water Ordinance is based on an EU Directive, 98/83 / EC, which is thus transposed into German law.

Although fewer parameters (around 35 altogether) than the WHO recommendation (around 200 parameters) have been determined, the TrinkwV has determined that the indicator function of individual substances achieves similar intensive analysis and quality assurance.

The strict reviews and test regulations for the water suppliers and the very strict limit values ​​make the German drinking water one of the cleanest and best controlled worldwide. What counts as drinking water in Germany has therefore a very high quality.

Unrecognized charges

The limit values ​​in Germany are such that there is no danger of damage to health even in the case of long-term enjoyment.

But problematic is the increasing contamination of drinking water by traces of substances, whose long-term effects in minimal doses have not yet been scientifically proven:

  • drug residues
  • hormones
  • unknown pesticide combinations

If drinking water is free of these substances, it is naturally of higher quality. The same applies to substances that are below the specified limits.

Natural mineralization

If drinking water retains its naturally occurring mineralization, it can be assumed that it is also healthy. In the water treatment in the waterworks, the mineralization is not changed, but in advertised "health water" such as alkaline active water.

Even water without any mineralization, such as distilled water or osmosis water is due to the general mineral deficiency of most people rather a health hazard rather than a "better" alternative.

The most strictly controlled water in Germany is medicinal water.

baby water

Individual substances may be harmful to infants at a significantly lower dose than adults. The applicable limits are generally designed for adults and healthy.

For the preparation of baby food, the use of water is therefore recommended, in which individual substances meet stricter limits. This applies in particular with regard to heavy metals and individual minerals.

In order to further reduce the germ count, which may still be 100 cfu in tap water, it is recommended to boil off the water before preparing the vial food. It is then germ-free. On the milk powder otherwise present in small numbers germs can multiply quickly.

The healthiest water

The healthiest and highest quality drinking water is free of all impurities and as far as possible natural and also not germ or substance contamination by line defects.

Tips & Tricks

The effects of artificially modified water on the organism can only be estimated on a flat-rate basis - in individual cases much more serious damage can also occur. The consumption of "super water" is therefore largely discouraged.


Video Board: Enhanced Water Quality Monitoring Programme