Indicator: Bathing water quality

A graph shows good and sufficient bathing water quality levels for coastal and inland waters (1992 to 2018). There was a particularly strong improvement in quality in the 1990s. The 2015 target has almost been met.Click to enlarge
Percentage of German bathing waters that comply with the provisions of the Bathing Water Directive..
Source: European Commission Figure as PDF

Table of Contents

 

At a glance

  • All bathing waters in the EU were supposed to be of at least sufficient quality by 2015.
  • Germany missed the target by a narrow margin: 98 % of all bathing waters met the requirements in 2018.
  • Taking into account only those bathing waters that were assessed, 99.7 % of the bathing waters met the requirements.
  • 94 % of inland bathing waters and almost 86 % of coastal bathing waters had excellent water quality in 2018.
 

Environmental importance

Swimming in natural waters may be associated with health risks. Like all waters, bathing waters are used for a wide range of purposes and are therefore exposed to a number of pollution risks.

The indicator is based on the hygienic quality of the bathing water by measuring the level of faecal bacteria in the water. Bathing waters with high concentrations of these bacteria are at risk of also having pathogens present. These can cause diseases involving fever, sickness and diarrhoea. This risk is present after heavy rain, for instance, as a result of combined waste water overflow from sewage treatment plants or runoff from agricultural land. Another problem arises as a result of high nutrient discharges (especially phosphates). These can lead to a mass development of cyanobacteria. If these bacteria occur in large numbers, measures have to be taken. The presence of cyanobacteria is, however, not included in the quality assessment.

 

Assessing the development

Germany’s bathing waters are of good quality. In 2018, 98 % of all bathing water sites met the EU’s minimum quality standards (inland waters 98.0 %, coastal waters 98.1 %). Taking into account the fact that not all bathing water sites can be assessed (e.g. because they are new), 99.7 % of the assessed bathing water sites met the criteria. 94 % of inland bathing sites and almost 86 % of coastal bathing sites had excellent bathing water quality. Between 1992 and 2001, the proportion of bathing sites complying with the guideline and minimum values rose steadily. Since then, the quality of Germany’s bathing waters has remained at a high level with slight fluctuations. The European Bathing Water Directive (2006/7/EC) sets out the values that bathing water has to comply with for the various levels of hygiene quality. All bathing water sites were supposed to at least meet the requirements of the sufficient quality level by 2015. The target was missed by a narrow margin, but Germany is still one of the leading countries in Europe.

 

Methodology

Water samples have to be taken in all European bathing waters before and during the bathing season according to a monitoring calendar. The samples are analysed for the faecal bacteria Escherichia coli (E. coli) and for the clade group intestinal enterococci. Specified concentrations have to be met for the different quality levels, which are set out in Annex I of the Bathing Water Directive. A detailed description of the methodology can be found in the Bathing Water Directive and in the report on the state of bathing water quality published by the European Environment Agency (EEA 2019).

More detailed information: 'Qualität von Badegewässern' (in German only).