In order to offer you optimal service, this website uses cookies. By using our website, you express your consent to this feature. More information can be found in our privacy policy.


Drinking water hygiene with Geberit

Protecting lives

An underestimated source of danger

  • Showers are a possible source of legionella infection

Legionella bacteria live in water and can cause legionnaires' disease. According to studies conducted in Germany, the number of deaths for which they are responsible equates to those caused by road accidents.

Infection happens through the inhalation of droplets in the shower, for example. Pseudomonas and other germs also create sources of danger.

Hot or cold and always on the move

It is true that drinking water is never completely germ-free, but normally the concentration of germs is harmless. Health risks only arise when the germs are able to multiply. Stagnant water and water temperatures between 25 °C and 50 °C can encourage bacterial growth. In practice, the risk is likely to occur in empty properties, in rooms that are only used intermittently or in cases where dead-end pipes are not in use.

Hygiene problems caused by excessive proliferation of germs can be reliably avoided through:

  • correct planning, design and commissioning
  • correct operation
  • avoidance of stagnation
  • avoidance of unfavourable temperatures between 25 °C and 50 °C

Problem areas for drinking water hygiene

Hazard sources: stagnant lukewarm water in a domestic installation.

Interruptions of use

In holiday homes, for example. If the system is not used, the water stagnates.

The graphic shows the growth of legionella as a function of water temperature.

Poor insulation

Poorly insulated cold-water pipes can become warm and poorly insulated hot-water pipes can become too cold.

Soiled system components

Dirt can easily enter unprotected pipes and other components on building sites.

Insufficient maintenance

System components (such as filters) that are not maintained can result in hygiene problems.

Legionella can multiply and contaminate the rest of the system.

Hazardous dead-end pipes

Water stagnates in pipe sections that are not used or used rarely.

Unsuitable for hygienic installation

Uncertified system components can lead to problems when it comes to ensuring a clean drinking water installation.

Pipe dimensions

Unnecessarily large pipe dimensions result in insufficient water replacement.

Extinguishing water pipes

Water stagnates here.

Initial filling and pressure test

If unhygienic water is used in the initial filling, the system is contaminated from the very start.

Geberit products for drinking water hygiene

  • Geberit sanitary flush
  • Reliable water replacement in drinking water installations
  • Preventing stagnation
  • Avoiding unfavourable temperatures
  • For buildings with irregular use: hotels, guest houses, hospitals, schools, sports halls, barracks, holiday homes, etc.
  • Flush performance of up to 2 x 15 litres per minute
  • Temperature and volumetric flow rate sensors minimise water consumption
  • Cover plate available in a variety of design versions
  • Operation with Geberit SetApp on smartphone
  • Log function
  • Connection to building service management system via RS485 or digital I/O

Geberit sanitary flush:
all applications at a glance

  • Hygiene filter in case
  • For initial filling before leak test
  • Withholds bacteria and dirt
  • Ensures that only hygienically perfect water enters the drinking water installation
  • Prevents contamination of the system
  • Geberit Mapress Stainless Steel fitting with protective caps
  • Geberit pipes and fittings are protected with caps
  • The protective caps prevent contamination during storage and transport
  • Do not remove the protective caps until immediately before installation
  • Replace the protective caps during interruptions in installation