CONGRESSIONAL DISTRICT DC NON-VOTING

District of Columbia — At-Large

119th Congress · 286 ZIP codes · Avg score 68/100 · Grade C · Updated 2026-07-19

Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19

ZipCheckup tracks water safety for 286 ZIP codes in District of Columbia's At-Large: the district earns a grade C (68/100). 9,042 EPA violations on record, 1,644 health-based.

C
District Grade
68
Avg Safety Score
286
ZIP Codes
9042
Total Violations
1644
Health Violations
4
Water Systems
Washington
Best ZIP: 20003 (72/100)
Parcel Return Service
Lowest ZIP: 56972 (50/100)

Top Contaminants

Consumer Confidence Report Rule (2466) E. coli (1918) Surface Water Treatment Rule (1096) Lead and Copper Rule (1096) Haloacetic Acids (HAA5) (822)

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 72 B 33 (6 health)
2 20004 Washington 72 B 33 (6 health)
3 20005 Washington 72 B 33 (6 health)
4 20006 Washington 72 B 33 (6 health)
5 20024 Washington 72 B 33 (6 health)
6 20027 Washington 72 B 33 (6 health)
7 20032 Washington 72 B 33 (6 health)
8 20036 Washington 72 B 33 (6 health)
9 20037 Washington 72 B 33 (6 health)
10 20230 Washington 72 B 33 (6 health)
11 20310 Washington 72 B 33 (6 health)
12 20330 Washington 72 B 33 (6 health)
13 20405 Washington 72 B 33 (6 health)
14 20470 Washington 72 B 33 (6 health)
15 20515 Washington 72 B 33 (6 health)
16 20520 Washington 72 B 33 (6 health)
17 20530 Washington 72 B 33 (6 health)
18 20013 Washington 69 C 33 (6 health)
19 20022 Washington 69 C 33 (6 health)
20 20023 Washington 69 C 33 (6 health)
21 20026 Washington 69 C 33 (6 health)
22 20029 Washington 69 C 33 (6 health)
23 20030 Washington 69 C 33 (6 health)
24 20033 Washington 69 C 33 (6 health)
25 20035 Washington 69 C 33 (6 health)
26 20038 Washington 69 C 33 (6 health)
27 20039 Washington 69 C 33 (6 health)
28 20040 Washington 69 C 33 (6 health)
29 20041 Washington 69 C 33 (6 health)
30 20042 Washington 69 C 33 (6 health)
31 20043 Washington 69 C 33 (6 health)
32 20044 Washington 69 C 33 (6 health)
33 20045 Washington 69 C 33 (6 health)
34 20046 Washington 69 C 33 (6 health)
35 20047 Washington 69 C 33 (6 health)
36 20049 Washington 69 C 33 (6 health)
37 20050 Washington 69 C 33 (6 health)
38 20051 Washington 69 C 33 (6 health)
39 20052 Washington 69 C 33 (6 health)
40 20053 Washington 69 C 33 (6 health)
41 20055 Washington 69 C 33 (6 health)
42 20056 Washington 69 C 33 (6 health)
43 20057 Washington 69 C 33 (6 health)
44 20058 Washington 69 C 33 (6 health)
45 20059 Washington 69 C 33 (6 health)
46 20060 Washington 69 C 33 (6 health)
47 20061 Washington 69 C 33 (6 health)
48 20062 Washington 69 C 33 (6 health)
49 20063 Washington 69 C 33 (6 health)
50 20064 Washington 69 C 33 (6 health)

Overview

District of Columbia's At-Large encompasses 286 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (68/100).

9042 EPA violations have been recorded across this district's water systems. 1644 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 - 2466 violations
  • E. coli - 1918 violations
  • Surface Water Treatment Rule - 1096 violations
  • Lead and Copper Rule - 1096 violations
  • Haloacetic Acids (HAA5) - 822 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

How to cite this page

APA ZipCheckup. (2026). District of Columbia At-Large: 9042 EPA Violations - C. https://zipcheckup.com/congressional/dc-at-large/
BibTeX 
@misc{zipcheckup-congressional-dc-at-large,
  author = {{ZipCheckup}},
  title  = {{District of Columbia At-Large: 9042 EPA Violations - C}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/dc-at-large/}
}

Data as of July 2026.

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