===Agglomerations in wastewater===
|{{http://10.112.176.27:6080/arcgis/rest/services/Geoportail/Geoportail_Gewaesserschutz/MapServer/307/images/ff61b1054b2e172f5539d3077bf3f03d/.png?nolink}}|Without centralised wastewater treatment plant|
|{{http://10.112.176.27:6080/arcgis/rest/services/Geoportail/Geoportail_Gewaesserschutz/MapServer/307/images/7f71def3781582d568e71731ab9aefa9/.png?nolink}}|Biological wastewater treatment plant|
|{{http://10.112.176.27:6080/arcgis/rest/services/Geoportail/Geoportail_Gewaesserschutz/MapServer/307/images/32ae2f56e036f4b550efbb7476c7488d/.png?nolink}}|Mechanical wastewater treatment plant|