WaterVerge
Alerts Cities States PFAS Tracker Guides News Maps Glossary Methodology

District of Columbia Water Quality Rankings

6 cities ranked · Data from EPA SDWIS

76.8
State avg score
6
Cities ranked
83%
A or B grade
17%
D or F grade
4
Health violations
1
PFAS detected
Analysis

District of Columbia water quality overview

District of Columbia's drinking water quality is good overall, with a state average score of 76.8 out of 100 — 2.6 points above the national average of 74.2. The median city score is 82.2, reflecting how water quality is distributed across the state's 6 ranked cities. 83% of District of Columbia cities earned an A or B grade, indicating broadly strong water quality infrastructure. Only 1 city received a failing grade. PFAS "forever chemicals" were detected in 1 of 6 cities (17%). All detected levels remain within current EPA limits, though any PFAS detection warrants attention. 4 cities have recorded health-based violations with the EPA — meaning contaminant levels exceeded safe limits or required testing was missed. Use the table below to find your city's specific record.

Grade Distribution

How District of Columbia cities scored

33%
50%
17%
A
2
33%
Excellent
B
3
50%
Good
C
0
0%
Fair
D
0
0%
Poor
F
1
17%
Failing
Score Distribution

Score distribution by range

5 3 0
1
5
0–9
10–19
20–29
30–39
40–49
50–59
60–69
70–79
80–89
90–100
Comparison

State vs national average

B
District of Columbia
76.8/100
B-
National avg
74.2/100
▲ 2.6 pts above national average
City Map

Water quality across District of Columbia

Each dot is a city, colored by grade. Size reflects population served. Click any city to view its full report.

District of Columbia city water quality map
Water quality: A B C D F
1 cities mapped · hover to preview · click to explore
Highlights

Top & bottom cities in District of Columbia

Best 10 cities

  1. 1 A- Fort Wingate 86.3 800
  2. 2 A- Fort Wingate 86.3 800
  3. 3 B+ Salem 83.4 900
  4. 4 B+ Ft. Wingate Elementary School 82.2 550
  5. 5 B+ Ft. Wingate Elementary School 82.2 550
  6. 6 F Washington 40.1 667K

Worst 10 cities

  1. -3 F Washington 40.1 667K
  2. -2 B+ Ft. Wingate Elementary School 82.2 550
  3. -1 B+ Ft. Wingate Elementary School 82.2 550
  4. 0 B+ Salem 83.4 900
  5. 1 A- Fort Wingate 86.3 800
  6. 2 A- Fort Wingate 86.3 800
Full Rankings

All 6 cities in District of Columbia

# City Grade Score Score Population Violations Issues
1 Fort Wingate
A-
 86.3
800 9 Unresolved
2 Fort Wingate
A-
 86.3
800 9 Unresolved
3 Salem
B+
 83.4
900 45 Health Unresolved
4 Ft. Wingate Elementary School
B+
 82.2
550 58 Health Unresolved
5 Ft. Wingate Elementary School
B+
 82.2
550 58 Health Unresolved
6 Washington
F
 40.1
667K 106 Health Unresolved
← View national best rankings Explore District of Columbia water data →