Clasificaciones 2026

Sistemas de agua menos confiables en Oklahoma — 2026

Última actualización: 4 de junio de 2026

774 códigos postales clasificados por Reliability Score N.º 1: código postal 73033 (Eakly, OK) — 10/100
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 774 ZIP codes with data in Oklahoma, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Oklahoma Rankings

Statistic Value
ZIP codes ranked 774
Lowest value 10/100
Median value 52/100
State Oklahoma

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Reliability Score Safety Score
1 73033 Eakly OK 10/100 55/100
2 73559 Mountain Park OK 10/100 70/100
3 74001 Avant OK 10/100 70/100
4 74422 Boynton OK 10/100 55/100
5 74636 Deer Creek OK 10/100 66/100
6 74637 Fairfax OK 10/100 70/100
7 74756 Sawyer OK 10/100 66/100
8 74837 Cromwell OK 10/100 66/100
9 73014 Calumet OK 15/100 69/100
10 73057 Maysville OK 15/100 62/100
11 73075 Pauls Valley OK 15/100 65/100
12 73090 Union City OK 15/100 55/100
13 73444 Hennepin OK 15/100 66/100
14 73446 Madill OK 15/100 70/100
15 73529 Comanche OK 15/100 65/100
16 73531 Devol OK 15/100 70/100
17 73533 Duncan OK 15/100 57/100
18 73534 Duncan OK 15/100 63/100
19 73536 Duncan OK 15/100 63/100
20 73542 Frederick OK 15/100 66/100
21 73546 Grandfield OK 15/100 55/100
22 73549 Headrick OK 15/100 68/100
23 73560 Olustee OK 15/100 63/100
24 73565 Ryan OK 15/100 66/100
25 73568 Temple OK 15/100 66/100
26 73570 Tipton OK 15/100 70/100
27 73573 Waurika OK 15/100 62/100
28 73729 Cleo Springs OK 15/100 66/100
29 73750 Kingfisher OK 15/100 55/100
30 73760 Meno OK 15/100 66/100
31 73762 Okarche OK 15/100 64/100
32 74002 Barnsdall OK 15/100 68/100
33 74003 Bartlesville OK 15/100 60/100
34 74004 Bartlesville OK 15/100 66/100
35 74005 Bartlesville OK 15/100 66/100
36 74006 Bartlesville OK 15/100 55/100
37 74020 Cleveland OK 15/100 70/100
38 74022 Copan OK 15/100 68/100
39 74026 Davenport OK 15/100 67/100
40 74027 Delaware OK 15/100 75/100
41 74035 Hominy OK 15/100 62/100
42 74047 Mounds OK 15/100 65/100
43 74058 Pawnee OK 15/100 70/100
44 74066 Sapulpa OK 15/100 63/100
45 74067 Sapulpa OK 15/100 78/100
46 74369 Welch OK 15/100 70/100
47 74401 Muskogee OK 15/100 69/100
48 74402 Muskogee OK 15/100 65/100
49 74403 Muskogee OK 15/100 59/100
50 74421 Beggs OK 15/100 70/100
51 74426 Checotah OK 15/100 70/100
52 74432 Eufaula OK 15/100 70/100
53 74435 Gore OK 15/100 58/100
54 74446 Okay OK 15/100 70/100
55 74447 Okmulgee OK 15/100 65/100
56 74450 Oktaha OK 15/100 55/100
57 74460 Schulter OK 15/100 55/100
58 74462 Stigler OK 15/100 75/100
59 74463 Taft OK 15/100 55/100
60 74467 Wagoner OK 15/100 65/100
61 74468 Wainwright OK 15/100 62/100
62 74477 Wagoner OK 15/100 66/100
63 74501 Mcalester OK 15/100 65/100
64 74502 Mcalester OK 15/100 66/100
65 74521 Albion OK 15/100 66/100
66 74523 Antlers OK 15/100 70/100
67 74525 Atoka OK 15/100 70/100
68 74536 Clayton OK 15/100 37/100
69 74542 Atoka OK 15/100 66/100
70 74547 Hartshorne OK 15/100 61/100
71 74553 Kiowa OK 15/100 70/100
72 74554 Krebs OK 15/100 70/100
73 74558 Nashoba OK 15/100 66/100
74 74560 Pittsburg OK 15/100 46/100
75 74561 Quinton OK 15/100 62/100
76 74565 Savanna OK 15/100 82/100
77 74569 Stringtown OK 15/100 70/100
78 74571 Talihina OK 15/100 70/100
79 74577 Whitesboro OK 15/100 55/100
80 74727 Boswell OK 15/100 66/100
81 74735 Fort Towson OK 15/100 70/100
82 74738 Grant OK 15/100 78/100
83 74743 Hugo OK 15/100 70/100
84 74745 Idabel OK 15/100 65/100
85 74801 Shawnee OK 15/100 60/100
86 74802 Shawnee OK 15/100 70/100
87 74804 Shawnee OK 15/100 60/100
88 74826 Asher OK 15/100 70/100
89 74848 Holdenville OK 15/100 70/100
90 74873 Tecumseh OK 15/100 40/100
91 74884 Wewoka OK 15/100 70/100
92 74902 Pocola OK 15/100 62/100
93 74937 Heavener OK 15/100 65/100
94 74951 Panama OK 15/100 66/100
95 74054 Osage OK 16/100 86/100
96 74867 Sasakwa OK 19/100 93/100
97 73532 Duke OK 20/100 66/100
98 73556 Martha OK 20/100 70/100
99 73562 Randlett OK 20/100 63/100
100 73628 Cheyenne OK 20/100 62/100

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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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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