Datasets Change history Submit Last created Popular Relevance Names in ascending order Names in descending order Last modified Go 2 datasets found HSY’s stormwater sewerage area 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.... WFS WMS SHP TAB Basic data on Helsinki Region Environmental Services (HSY) water supply The material covers basic data on water utility operations and resulting indicators. The data is submitted annually to the information system of the Finnish Water Utilities... XLSX