WMS: WaterQualEauSitesNational
URL: https://maps-cartes.ec.gc.ca/arcgis/services/WaterQualEauSitesNational/WaterQualitySD/MapServer/WMSServer?request=GetCapabilities&service=WMS&layers=0&legend_format=image/png&feature_info_type=text/html
From the dataset abstract
Long-term freshwater quality data from federal and federal-provincial sampling sites throughout Canada's aquatic ecosystems are included in this dataset. Measurements regularly include...
Source: National Long-term Water Quality Monitoring Data