Clasificaciones 2026

Sistemas de agua menos confiables en Hawaii — 2026

Última actualización: 4 de junio de 2026

141 códigos postales clasificados por Reliability Score N.º 1: código postal 96770 (Maunaloa, HI) — 30/100
Plomo Infracciones Puntuación más baja Más seguros Riesgo de inundación Costo de energía Radón PFAS Confiabilidad Índice EJ Riesgo para compradores CO y gas Gas más seguro Carga de remediación Infracciones sin resolver (por proveedor) Equidad del agua (por proveedor)

Out of 141 ZIP codes with data in Hawaii, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Hawaii Rankings

Statistic Value
ZIP codes ranked 141
Lowest value 30/100
Median value 80/100
State Hawaii

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Reliability Score Safety Score
1 96770 Maunaloa HI 30/100 80/100
2 96742 Kalaupapa HI 45/100 86/100
3 96757 Kualapuu HI 45/100 86/100
4 96763 Lanai City HI 50/100 85/100
5 96857 Schofield Barracks HI 50/100 86/100
6 96729 Hoolehua HI 60/100 88/100
7 96739 Keauhou HI 60/100 66/100
8 96791 Waialua HI 60/100 60/100
9 96740 Kailua Kona HI 65/100 72/100
10 96743 Kamuela HI 65/100 71/100
11 96750 Kealakekua HI 65/100 73/100
12 96725 Holualoa HI 67/100 86/100
13 96720 Hilo HI 70/100 70/100
14 96721 Hilo HI 70/100 86/100
15 96748 Kaunakakai HI 73/100 90/100
16 96704 Captain Cook HI 75/100 73/100
17 96708 Haiku HI 75/100 70/100
18 96709 Kapolei HI 75/100 66/100
19 96726 Honaunau HI 75/100 66/100
20 96744 Kaneohe HI 75/100 82/100
21 96745 Kailua Kona HI 75/100 82/100
22 96751 Kealia HI 75/100 88/100
23 96753 Kihei HI 75/100 72/100
24 96773 Ninole HI 75/100 88/100
25 96774 Ookala HI 75/100 88/100
26 96784 Puunene HI 75/100 88/100
27 96788 Pukalani HI 75/100 88/100
28 96853 J B P H H HI 75/100 66/100
29 96861 Camp H M Smith HI 75/100 66/100
30 96700 Kauai County HI 80/100 —
31 96701 Aiea HI 80/100 82/100
32 96703 Anahola HI 80/100 77/100
33 96710 Hakalau HI 80/100 66/100
34 96712 Haleiwa HI 80/100 55/100
35 96713 Hana HI 80/100 87/100
36 96714 Hanalei HI 80/100 72/100
37 96716 Hanapepe HI 80/100 65/100
38 96717 Hauula HI 80/100 60/100
39 96718 Hawaii National Park HI 80/100 86/100
40 96719 Hawi HI 80/100 66/100
41 96727 Honokaa HI 80/100 73/100
42 96728 Honomu HI 80/100 88/100
43 96730 Kaaawa HI 80/100 60/100
44 96731 Kahuku HI 80/100 87/100
45 96733 Kahului HI 80/100 70/100
46 96734 Kailua HI 80/100 55/100
47 96737 Ocean View HI 80/100 66/100
48 96738 Waikoloa HI 80/100 87/100
49 96747 Kaumakani HI 80/100 87/100
50 96754 Kilauea HI 80/100 82/100
51 96755 Kapaau HI 80/100 66/100
52 96758 Kauai County HI 80/100 —
53 96759 Kunia HI 80/100 88/100
54 96762 Laie HI 80/100 77/100
55 96764 Laupahoehoe HI 80/100 88/100
56 96768 Makawao HI 80/100 95/100
57 96772 Naalehu HI 80/100 66/100
58 96776 Paauilo HI 80/100 88/100
59 96777 Pahala HI 80/100 87/100
60 96778 Pahoa HI 80/100 82/100
61 96780 Papaaloa HI 80/100 73/100
62 96781 Papaikou HI 80/100 88/100
63 96782 Pearl City HI 80/100 82/100
64 96783 Pepeekeo HI 80/100 88/100
65 96785 Volcano HI 80/100 66/100
66 96786 Wahiawa HI 80/100 87/100
67 96789 Mililani HI 80/100 73/100
68 96795 Waimanalo HI 80/100 65/100
69 96797 Waipahu HI 80/100 87/100
70 96800 Honolulu County HI 80/100 —
71 96801 Honolulu HI 80/100 87/100
72 96802 Honolulu HI 80/100 88/100
73 96803 Honolulu HI 80/100 87/100
74 96804 Honolulu HI 80/100 87/100
75 96805 Honolulu HI 80/100 88/100
76 96806 Honolulu HI 80/100 88/100
77 96807 Honolulu HI 80/100 88/100
78 96808 Honolulu HI 80/100 88/100
79 96809 Honolulu HI 80/100 88/100
80 96810 Honolulu HI 80/100 87/100
81 96811 Honolulu HI 80/100 87/100
82 96812 Honolulu HI 80/100 88/100
83 96813 Honolulu HI 80/100 82/100
84 96814 Honolulu HI 80/100 87/100
85 96815 Honolulu HI 80/100 77/100
86 96816 Honolulu HI 80/100 77/100
87 96817 Honolulu HI 80/100 82/100
88 96818 Honolulu HI 80/100 87/100
89 96819 Honolulu HI 80/100 77/100
90 96820 Honolulu HI 80/100 87/100
91 96821 Honolulu HI 80/100 72/100
92 96822 Honolulu HI 80/100 77/100
93 96823 Honolulu HI 80/100 88/100
94 96824 Honolulu HI 80/100 88/100
95 96825 Honolulu HI 80/100 77/100
96 96826 Honolulu HI 80/100 77/100
97 96828 Honolulu HI 80/100 88/100
98 96830 Honolulu HI 80/100 87/100
99 96836 Honolulu HI 80/100 88/100
100 96837 Honolulu HI 80/100 88/100

Methodology

Water system reliability scores (0-100) combine violation frequency, violation recency, resolution rate, and system size. Systems with repeated health-based violations and unresolved issues score lowest. The reliability score focuses specifically on the water utility performance, distinct from the broader Home Safety Score.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What does a low water reliability score mean?

A low reliability score (below 50) indicates a water system with frequent violations, poor resolution rates, or recurring compliance issues. These systems may have aging infrastructure, inadequate treatment, or management challenges.

How is reliability different from safety score?

The reliability score focuses specifically on the water utility performance (violations, resolution, compliance). The Home Safety Score is broader, also including lead risk, radon, and flood data. A ZIP code can have a reliable water system but still have high radon or flood risk.

Explore More Rankings

Cómo se calcula esta clasificación, fuentes de datos y limitaciones: Metodología de clasificaciones →

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Seguridad del hogar 2026 Combinación de riesgo de agua, plomo, radón y ambiental PFAS 2026 Químicos eternos detectados en el agua potable Riesgo de plomo 2026 Infraestructura de tuberías de plomo y excedencias de la EPA
Aviso: Las clasificaciones se basan en datos de la EPA, la FEMA y agencias federales. Reflejan patrones históricos e indicadores de riesgo, no necesariamente las condiciones actuales. Para obtener la información más actual, los residentes pueden comunicarse con la compañía local de agua o solicitar un Informe de Confianza del Consumidor (CCR).

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