District of Columbia Water Quality
4 water systems serving 667,325 people. 110 total violations on record.
Safety Grade Distribution
A
1
25%
B
0
0%
C
1
25%
D
2
50%
F
0
0%
4
Water Systems
667,325
Population Served
110
Total Violations
22
Health-Based
Most Contaminated Systems
Largest Water Systems in District of Columbia
| Water System | Grade | Population | Violations |
|---|---|---|---|
| D.C. WATER AND SEWER AUTHORITY | C | 632,323 | 22 |
| JOINT BASE ANACOSTIA - BOLLING | D | 19,312 | 63 |
| NAVAL STATION WASHINGTON - WNY | D | 15,690 | 24 |
| WASHINGTON AQUEDUCT DIVISION. | A | 0 | 1 |