Campaign "Cheaper septic tanks"

German version

The campaign "Cheaper septic tanks" allows for septic tanks to be emptied at the current sewer fee (which is calculated on the basis of the actual water volume taken). This does not apply to separators, soakage pits and house sewerage plants.

Use the online application form to benefit from this low-cost opportunity to have septic tanks emptied on properties that are currently not connected to the public sewer system (residential buildings, businesses, allotment gardens).

General information

The campaign "Cheaper septic tanks" allows the emptying of septic tanks on properties that are not connected to the public sewer system (residential buildings, businesses, allotment gardens) at a low cost, i.e. the current sewer fee (calculated based on the actual water volume taken).

Data protection

For information on data protection and your data protection rights as an individual please visit: Data Protection Notice (German)


  • You must have already submitted a general order for emptying of your septic tank.
  • suitable metering device (water meter) must be available to measure the water volume taken (city water, well water, other water sources).

To be eligible for the offer, the following conditions (among others) must be met:

  • There is already a project for a public sewer
  • The septic tank can be reached year round via a hard road
  • The emptying vehicle must be able to arrive and leave in forward gear.
  • The septic tank is located no further than 30 metres from the property boundary.
  • Access to the septic tank is not via the private property of a third party.

Full terms and conditions: Special terms and conditions of Wien Kanal for "Cheaper septic tanks" (SGB-BIS): 272 KB PDF (German)




Wien Kanal (German)
1030 Vienna, Modecenterstraße 14

Information on costs and billing:
Monday to Friday 7.30 am to 3.30 pm
Phone: +43 1 4000-8030

Documents required

Completed application form


The fee for emptying the septic tank is based on your water use (German) and the current sewer fee (German), as with a sewer connection. Therefore, payment is not impacted by the number of tanks emptied and the volume removed. You will be sent a payment slip. Payment must be made to the appropriate accounting department of Municipal Department 6.

If you water your garden, you can apply for a fee reduction (German).

For any questions regarding payment, please contact the competent accounting department (Buchhaltungsabteilung 40) (German) of Municipal Department 6.


Further information

By submitting the application, you agree to the terms and conditions. Properties that are required to be connected to the public sewer system are not eligible for this promotion. If the property is connected to the public water supply, the water volume taken pursuant to the Water Supply Act forms the basis for the calculation of the fee for emptying the septic tank.

Legal basis:

Contact for this page:
City of Vienna | Vienna Waste Water Management
Contact form