CONGRESSIONAL DISTRICT DC NON-VOTING

District of Columbia — At-Large

119th Congress · 286 ZIP codes · Avg score 65/100 · Grade C · Updated 2026-06-03

Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03

C
District Grade
65
Avg Safety Score
286
ZIP Codes
19180
Total Violations
2466
Health Violations
4
Water Systems
Washington
Best ZIP: 20003 (69/100)
Parcel Return Service
Lowest ZIP: 56972 (50/100)

Top Contaminants

Consumer Confidence Report Rule (5754) E. coli (4384) Surface Water Treatment Rule (2466) Lead and Copper Rule (1370) Stage 1 DBP Rule (1096)

ZIP Codes in This District

100 ZIP codes tracked in District of Columbia's At-Large. Showing top 50 by safety score.

# ZIP Code City Safety Score Grade Violations
1 20003 Washington 69 C 70 (9 health)
2 20004 Washington 69 C 70 (9 health)
3 20005 Washington 69 C 70 (9 health)
4 20006 Washington 69 C 70 (9 health)
5 20024 Washington 69 C 70 (9 health)
6 20027 Washington 69 C 70 (9 health)
7 20032 Washington 69 C 70 (9 health)
8 20036 Washington 69 C 70 (9 health)
9 20037 Washington 69 C 70 (9 health)
10 20230 Washington 69 C 70 (9 health)
11 20310 Washington 69 C 70 (9 health)
12 20330 Washington 69 C 70 (9 health)
13 20405 Washington 69 C 70 (9 health)
14 20470 Washington 69 C 70 (9 health)
15 20515 Washington 69 C 70 (9 health)
16 20520 Washington 69 C 70 (9 health)
17 20530 Washington 69 C 70 (9 health)
18 20013 Washington 66 C 70 (9 health)
19 20022 Washington 66 C 70 (9 health)
20 20023 Washington 66 C 70 (9 health)
21 20026 Washington 66 C 70 (9 health)
22 20029 Washington 66 C 70 (9 health)
23 20030 Washington 66 C 70 (9 health)
24 20033 Washington 66 C 70 (9 health)
25 20035 Washington 66 C 70 (9 health)
26 20038 Washington 66 C 70 (9 health)
27 20039 Washington 66 C 70 (9 health)
28 20040 Washington 66 C 70 (9 health)
29 20041 Washington 66 C 70 (9 health)
30 20042 Washington 66 C 70 (9 health)
31 20043 Washington 66 C 70 (9 health)
32 20044 Washington 66 C 70 (9 health)
33 20045 Washington 66 C 70 (9 health)
34 20046 Washington 66 C 70 (9 health)
35 20047 Washington 66 C 70 (9 health)
36 20049 Washington 66 C 70 (9 health)
37 20050 Washington 66 C 70 (9 health)
38 20051 Washington 66 C 70 (9 health)
39 20052 Washington 66 C 70 (9 health)
40 20053 Washington 66 C 70 (9 health)
41 20055 Washington 66 C 70 (9 health)
42 20056 Washington 66 C 70 (9 health)
43 20057 Washington 66 C 70 (9 health)
44 20058 Washington 66 C 70 (9 health)
45 20059 Washington 66 C 70 (9 health)
46 20060 Washington 66 C 70 (9 health)
47 20061 Washington 66 C 70 (9 health)
48 20062 Washington 66 C 70 (9 health)
49 20063 Washington 66 C 70 (9 health)
50 20064 Washington 66 C 70 (9 health)

Overview

District of Columbia's At-Large serving an estimated 190,434,926 residents encompasses 286 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (65/100).

19180 EPA violations have been recorded across this district's water systems. 2466 are health-based violations. About 70% of tracked ZIP codes have at least one violation.

Top Contaminants

The most frequently cited water quality issues in this district:

  • Consumer Confidence Report Rule — 5754 violations
  • E. coli — 4384 violations
  • Surface Water Treatment Rule — 2466 violations
  • Lead and Copper Rule — 1370 violations
  • Stage 1 DBP Rule — 1096 violations

Housing Context

Homes in this district were built on average around 1958 (~68 years old). Older homes may have lead pipes or solder — consider a water filter if your home predates 1986.

Data Sources

Updated daily. Data covers 286 ZIP codes in District of Columbia's At-Large.

← Back to District of Columbia overview

Violations found — check filter options Free tool — no phone call required.