CONGRESSIONAL DISTRICT HI

Hawaii — 1st District

Name: Water Quality Data for Hawaii - 1st District
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

119th Congress · 52 ZIP codes · Avg score 82/100 · Grade B · Updated 2026-07-19

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

ZipCheckup tracks water safety for 52 ZIP codes in Hawaii's 1st District: the district earns a grade B (82/100). No EPA drinking-water violations are on record for the tracked systems.

District Grade

Avg Safety Score

ZIP Codes

Total Violations

Water Systems

Honolulu

Best ZIP: 96802 (88/100)

Ewa Beach

Lowest ZIP: 96706 (60/100)

ZIP Codes in This District

52 ZIP codes tracked in Hawaii's 1st District. Showing top 50 by safety score.

#	ZIP Code	City	Safety Score	Grade
1	96802	Honolulu	88	A
2	96805	Honolulu	88	A
3	96806	Honolulu	88	A
4	96807	Honolulu	88	A
5	96808	Honolulu	88	A
6	96809	Honolulu	88	A
7	96812	Honolulu	88	A
8	96823	Honolulu	88	A
9	96824	Honolulu	88	A
10	96828	Honolulu	88	A
11	96836	Honolulu	88	A
12	96837	Honolulu	88	A
13	96838	Honolulu	88	A
14	96839	Honolulu	88	A
15	96840	Honolulu	88	A
16	96841	Honolulu	88	A
17	96843	Honolulu	88	A
18	96844	Honolulu	88	A
19	96846	Honolulu	88	A
20	96847	Honolulu	88	A
21	96848	Honolulu	88	A
22	96849	Honolulu	88	A
23	96850	Honolulu	88	A
24	96797	Waipahu	87	A
25	96801	Honolulu	87	A
26	96803	Honolulu	87	A
27	96804	Honolulu	87	A
28	96810	Honolulu	87	A
29	96811	Honolulu	87	A
30	96814	Honolulu	87	A
31	96818	Honolulu	87	A
32	96820	Honolulu	87	A
33	96830	Honolulu	87	A
34	96701	Aiea	82	B
35	96782	Pearl City	82	B
36	96813	Honolulu	82	B
37	96817	Honolulu	82	B
38	96815	Honolulu	77	B
39	96816	Honolulu	77	B
40	96819	Honolulu	77	B
41	96822	Honolulu	77	B
42	96825	Honolulu	77	B
43	96826	Honolulu	77	B
44	96789	Mililani	73	B
45	96821	Honolulu	72	B
46	96709	Kapolei	66	C
47	96853	J B P H H	66	C
48	96858	Fort Shafter	66	C
49	96859	Tripler Army Medical Center	66	C
50	96860	J B P H H	66	C

Overview

Hawaii's 1st District encompasses 52 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (82/100).

No EPA violations recorded across tracked ZIP codes in this district.

Housing Context

Homes in this district were built on average around 1976 (~50 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.

Data Sources

Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
Congressional district boundaries: U.S. Census Bureau, 119th Congress
Housing age: U.S. Census Bureau American Community Survey

Updated daily. Data covers 52 ZIP codes in Hawaii's 1st District.

← Back to Hawaii overview

How to cite this page

APA ZipCheckup. (2026). Hawaii 1st District - Water Quality. https://zipcheckup.com/congressional/hi-1/

BibTeX

@misc{zipcheckup-congressional-hi-1,
  author = {{ZipCheckup}},
  title  = {{Hawaii 1st District - Water Quality}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/hi-1/}
}

Data as of July 2026.