Important information on elevated Legionella levels in drinking water

Legionella bacteria are bacteria that multiply in warm, stagnant water. There is a risk of infection when water containing Legionella is finely atomized/nebulized and the vapor is then inhaled. This can happen when showering or when using humidifiers or inhalers.

The causes of Legionella can be diverse, which is why a comprehensive analysis is necessary. Possible causes include stagnant water, excessively low hot water temperatures, structural conditions, or infrequent use of the faucet.

Legionella bacteria thrive in stagnant water. Therefore, please use all taps regularly, at least every three days—even in rarely used rooms such as guest bathrooms.

If you are away for a longer period of time, please note the following: Make sure that the water flows regularly (e.g. through friends or neighbors) or close the main shut-off valve.

After an extended absence, please let the water run on all faucets for at least two minutes with the windows open. Only then should you use the water.

Limescale deposits and corrosion particles promote the growth of microorganisms. Therefore, shower heads, hoses, and aerators should be descaled regularly (e.g., with diluted vinegar).

You can find the exact process here .

In rare cases, an infection caused by Legionella can occur. Typical symptoms include fever, cough, chills, shortness of breath, or flu-like symptoms. If you suspect this, please seek medical help and mention contact with potentially contaminated water.

Yes, you can drink tap water. Legionella is only dangerous if you inhale steam or spray. Drinking it is safe.

The ban only applies to showering. Washing hands, bathing, and brushing teeth are all safe. However, be careful not to create hot steam or fine spray when bathing.

Yes. If you use the special filter we provide, you can shower again. The filter prevents the release of Legionella bacteria. Please use it exactly according to the instructions provided.

If you haven't received a filter yet, the shower ban still applies to you. Please contact the responsible caretaker to obtain one.

Showering once is usually unproblematic. If you experience persistent discomfort or symptoms, you should seek medical advice as a precaution.

Yes, these devices can be used as usual, as no steam is generated during operation. Please be careful when opening the devices, as this may generate steam, and open the window.

Yes, boiling kills Legionella bacteria. Boiled water can be used for personal hygiene.

If Legionella is present, avoid contact with steam or spray. Use boiled or bottled water for preparing baby food and personal hygiene.

If you use an inhaler, only use it with boiled or bottled water.

The Drinking Water Ordinance requires landlords to conduct regular inspections. HOWOGE naturally complies with this obligation.

If a limit value is exceeded, the landlord is obligated to implement countermeasures and coordinate these with the responsible health authority. A shower ban is a legally required protective measure.

After a Legionella infestation, control samples and further regular tests are carried out to ensure long-term safety.

You can find the exact process here .

You will receive the information promptly via a notice board in the building and by personal letter. You can find general information on our website.

We will also inform you further via a notice in the building or by personal letter.

You can find the exact process here .

The costs for repair work will be borne by HOWOGE.

If you have any questions, please feel free to contact us using the usual contact methods. If alternative contact methods apply, we will specifically state them in our correspondence.