Vienna’s sewer system

99 percent of all Viennese households are connected to the city’s 2,400 km sewer network. Every day, 15 tonnes of deposits are removed from the sewers to ensure a seamless operation of the sewer system.

Sewer worker looking out of a manhole, two sewer workers standing to his right and left

Customer service

An overview of the services of Wien Kanal (WKN) and how to contact us. more

Woman and man in a flooded cellar

24-hour emergency hotline

Blocked sewers, burst pipes, sewer smell, keys dropped in the sewer grate? Our 24-hour emergency hotline can help you. more

History of Vienna's sewer system

From Roman times to the 21st century. Today, our focus is on wastewater treatment and water protection. more

The Third Man Tour

Visit the locations of the film classic in Vienna's sewer system and learn more about the sewers and work in the underground. more

E-government services

  • Sewer system
    House sewer, oil, petrol and grease separators, septic tanks, soakage pits and house sewerage plants ...
Contact for this page:
City of Vienna | Vienna Waste Water Management
Contact form