Department of Energy and EnvironmentA regional dataset containing E. coli monitoring sampling results collected along the Potomac and Anacostia Rivers, in response to the January 2026 Potomac Interceptor Collapse. Each data provider retains responsibility for its own data and submits to this compilation dataset voluntarily. Check the Source field to identify the data provider: DC Department of Energy & Environment (DOEE) Maryland Department of the Environment (MDE) Virginia Deparment of Environmental Quality (VADEQ) DC Water Potomac Riverkeepers Network (PRK) with University of Maryland (UMD) Contact individual data providers to learn more about their data (i.e., collection, quality assurance, terms of use, etc.). Questions regarding DC Department of Energy & Environment sampling sites can be directed to pi.data@dc.gov .ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/ecb21bcf908e4ec4a15f261f5135ef9d_0engOpen Data DCPublicPotomac Interceptor E. coli Sample Results [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of ColumbiaLast Modified: 2026-03-08