COUNTY WATER-SYSTEM LEDGER
District of Columbia, District of Columbia
EPA’s September 2026 export lists 3 active community water systems serving District of Columbia, District of Columbia, with 1 current-violation flags and 1 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving District of Columbia, District of Columbia
EPA associates 3 covered systems with District of Columbia, District of Columbia; their reported population-served values total 668,435 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| D.C. Water And Sewer AuthorityDC0000002 | 632,323 | Surface water purchased | No current violation flagged |
| Joint Base Anacostia - BollingDC0000004 | 19,312 | Surface water purchased | Current serious-violator flag |
| Naval Station Washington - WnyDC0000003 | 16,800 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for District of Columbia, District of Columbia
EPA classifies 3 systems serving District of Columbia, District of Columbia across 1 primary-source categories; Surface water purchased is the largest category with 3 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.