Washington, D.C. — all systems

Washington, D.C. water systems A–Z

Page 1 of 1 · D.c. Water and Sewer Authority → Washington Aqueduct Division.. Every public water system we track in Washington, D.C., alphabetically. Each links to the system's measured contaminant levels against federal limits.

• D.c. Water and Sewer Authority (2025)
• Joint Base Anacostia - Bolling (2024)
• Naval Observatory (2023)
• Naval Station Washington - Wny (2023)
• Washington Aqueduct Division. (1992)