District of Columbia water providers
Find published drinking-water records, providers, and official agency resources for District of Columbia. Review sources, sample dates, and coverage.
Official drinking-water resources
The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.
Community systems appear first. Sort: Population served · A–Z
Public water systems
14 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.
- D.C. Water And Sewer AuthorityDC0000002 · CWS · Population served: 632,323
- Joint Base Anacostia - BollingDC0000004 · CWS · Population served: 19,312
- Naval Station Washington - WnyDC0000003 · CWS · Population served: 16,800
- Wingate Elementary School (New) - BIE093534022 · CWS · Population served: 800
- Fort Wingate Community093534020 · CWS · Population served: 550
- Eastern Navajo Agency - BIE093534001 · CWS · Population served: 455
- Chi Chil Tah Jones Ranch Community School - BIE093534005 · CWS · Population served: 137
- Dibe Yazhi Habitiin (Borrego Pass) Day School-BIE093534003 · CWS · Population served: 120
- Hanaadli Huerfano Boarding School - BIE093534006 · CWS · Population served: 65
- Washington Aqueduct Division.DC0000001 · CWS · Population served: 0
Schools, workplaces and other non-community systems
- Baca (Dlo-ay Ashi) Community School - BIE093534002 · NTNCWS · Population served: 424
- Naval ObservatoryDC0000005 · NTNCWS · Population served: 250
- Bread Springs Day School (New) - BIE093534007 · NTNCWS · Population served: 115
- Lake Valley Navajo School - BIE093534010 · NTNCWS · Population served: 60