Protecting lives

Drinking water hygiene is the number one priority


Legionella are bacteria that live in the water and cause legionnaires' disease. This causes thousands of deaths every year – in Germany alone, there are as many deaths resulting from legionnaires' disease as from traffic accidents. Plumbers, sanitary engineers and building managers can significantly reduce this risk as you can only be infected by legionella if you breathe in infected water in the form of tiny droplets. This often occurs when taking a shower.

How do the germs end up in drinking water?

Drinking water is never completely germ-free. Nevertheless, the concentration of bacteria and germs is normally harmless. It is not until the germs are able to multiply that there is a serious risk. Multiplication of this type only occurs:

  • in stagnant water and
  • at temperatures of between –25 °C and 50 °C

If a drinking water installation is planned and designed properly, this can permanently prevent legionella and other germs such as pseudomonas from finding favourable living conditions.

Geberit solutions for protecting drinking water

Sanitary flush with GIS

Sanitary flush prevents germs from multiplying

The Geberit sanitary flush ensures reliable water replacement in drinking water installations. This means that excessive stagnation times or unfavourable temperatures can be avoided in the water supply lines. Typical application ranges are buildings with irregular use, such as hotels, guest houses, hospitals, schools, gyms, barracks or holiday homes.

The sanitary flush can be controlled cable-free with a smartphone app: the Geberit SetApp. The flush performance can be individually set to up to 2 x 15 litres per minute. Temperature and volumetric flow rate sensors ensure that only the quantity of water actually required is used when flushing. This saves a great deal of water.

The sanitary flush can be connected to a building service management system via different interfaces (RS485 or digital I/O).

Hygiene filter

Hygiene filter for clean initial filling

To ensure that a new drinking water installation does not become contaminated during the initial filling or a leak test, it must be filled with filtered drinking water. The Geberit hygiene filter retains bacteria and dirt particles, thereby ensuring that only hygienically harmless drinking water enters the installation. Thanks to this, the risk of contamination is eliminated.

Protective cap

Protective caps for clean pipes

To protect the inside of the drinking water pipes and fittings from contamination during storage and transport and on the building site, they are fitted with plastic caps and plugs at the factory. These caps prevent dust and dirt from entering the pipes until they are used.

Protection against germs: hot enough and cold enough – and always moving

Building with correct system


Irregular use

Fully automatic flush

Operation with smartphone

The Geberit sanitary flush prevents longer stagnation times in the drinking water pipes. Smartphone operation is simple and user-friendly.


Thermal insulation

Avoid lukewarm

Graphic – growth of legionella

The graphic shows the growth of legionella as a function of water temperature. With good thermal insulation, the cold water stays really cold and the hot water really hot, meaning that no bacteria can multiply.


Components and sanitary appliances

Only with approval



Precisely the right size

Mapress Stainless Steel Fittings

Pipe diameters that are dimensioned for the actual consumption rather than being too big enable optimal water replacement.


Everything flows

No unused pipes

Used pipe versus dead-end pipe

Water stagnates in pipe sections that are not used or used rarely. Legionella can multiply and contaminate the rest of the system. Therefore, we recommend Geberit circular pipes.



Well-protected system components

Mapress protective cap

Pipes and fittings from Geberit are protected against dirt by their packaging.


Clean start

Simple and reliable

Hygiene filter

A Geberit hygiene filter prevents pipes from being contaminated with unhygienic water during their initial filling, for example during a pressure test with water.


Storage water heater

Too hot for germs

Graphic – growth of legionella

The graphic shows the growth of legionella as a function of water temperature. The storage water heater must be set so that water is heated up to at least 60 °C. Germ growth is at its peak at temperatures between 25 °C and 50 °C.


Extinguishing water pipe

No chance of backflow

Extinguishing water pipe

The water in extinguishing water pipes stagnates over the years. Therefore, a technical measure is required to prevent backflow into the drinking water system.