The data contains information on the extent of HSY’s stormwater sewerage area at property level.

The stormwater sewerage area is based on Section 17 a of the Water Services Act. A property located in the stormwater sewerage area must be connected to HSY’s stormwater sewer network and HSY must provide stormwater sewerage services to the property. The material also includes areas that have a combined sewer system (combined sewerage area) as well as areas to which stormwater sewerage will be extended. The data is from 2018–2019.

The data can also be viewed in HSY’s open data map service.

Data and Resources

Additional information

Administrator Helsingin seudun ympäristöpalvelut HSY
Administrator's webpage
Published 09.03.2020
Updated 09.03.2020
More information
Geographical coverage
Licence Creative Commons Attribution 4.0
How to reference Source: HSY’s stormwater sewerage area. The maintainer of the dataset is Helsingin seudun ympäristöpalvelut HSY. The dataset has been downloaded from Helsinki Region Infoshare service on 25.09.2021 under the license Creative Commons Attribution 4.0.


Creative Commons Attribution 4.0
CC-BY-4.0 [Open Data]

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