Clasificaciones 2026

Sistemas de agua menos confiables en Oregon — 2026

Última actualización: 4 de junio de 2026

483 códigos postales clasificados por Reliability Score N.º 1: código postal 97901 (Adrian, OR) — 20/100
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 483 ZIP codes with data in Oregon, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Oregon Rankings

Statistic Value
ZIP codes ranked 483
Lowest value 20/100
Median value 65/100
State Oregon

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Reliability Score Safety Score
1 97901 Adrian OR 20/100 50/100
2 97481 Tenmile OR 22/100 94/100
3 97429 Days Creek OR 23/100 91/100
4 97021 Dufur OR 24/100 81/100
5 97016 Clatskanie OR 25/100 64/100
6 97024 Fairview OR 25/100 61/100
7 97048 Rainier OR 25/100 68/100
8 97138 Seaside OR 25/100 60/100
9 97390 Tidewater OR 25/100 68/100
10 97431 Dexter OR 25/100 73/100
11 97446 Harrisburg OR 25/100 78/100
12 97523 Cave Junction OR 25/100 80/100
13 97532 Merlin OR 25/100 57/100
14 97630 Lakeview OR 27/100 70/100
15 97820 Canyon City OR 27/100 78/100
16 97055 Sandy OR 28/100 66/100
17 97113 Cornelius OR 28/100 76/100
18 97465 Port Orford OR 28/100 91/100
19 97037 Maupin OR 29/100 77/100
20 97864 Monument OR 29/100 77/100
21 97050 Rufus OR 30/100 67/100
22 97463 Oakridge OR 30/100 83/100
23 97038 Molalla OR 31/100 78/100
24 97127 Lafayette OR 31/100 72/100
25 97119 Gaston OR 32/100 82/100
26 97884 Unity OR 32/100 78/100
27 97014 Cascade Locks OR 34/100 81/100
28 97347 Grand Ronde OR 34/100 93/100
29 97374 Scio OR 34/100 83/100
30 97394 Waldport OR 34/100 83/100
31 97423 Coquille OR 34/100 90/100
32 97144 Timber OR 35/100 69/100
33 97627 Keno OR 35/100 69/100
34 97857 Lostine OR 35/100 84/100
35 97870 Richland OR 36/100 76/100
36 97031 Hood River OR 37/100 82/100
37 97042 Mulino OR 37/100 89/100
38 97064 Vernonia OR 37/100 64/100
39 97358 Lyons OR 37/100 94/100
40 97378 Sheridan OR 37/100 72/100
41 97420 Coos Bay OR 37/100 81/100
42 97444 Gold Beach OR 37/100 81/100
43 97448 Junction City OR 37/100 89/100
44 97462 Oakland OR 37/100 94/100
45 97470 Roseburg OR 37/100 81/100
46 97471 Roseburg OR 37/100 81/100
47 97624 Chiloquin OR 37/100 82/100
48 97754 Prineville OR 37/100 72/100
49 97001 Antelope OR 38/100 74/100
50 97415 Brookings OR 38/100 83/100
51 97479 Sutherlin OR 38/100 82/100
52 97071 Woodburn OR 40/100 81/100
53 97132 Newberg OR 40/100 69/100
54 97307 Keizer OR 40/100 88/100
55 97450 Langlois OR 40/100 90/100
56 97458 Myrtle Point OR 40/100 76/100
57 97469 Riddle OR 40/100 65/100
58 97027 Gladstone OR 41/100 78/100
59 97058 The Dalles OR 42/100 82/100
60 97063 Tygh Valley OR 42/100 82/100
61 97102 Arch Cape OR 42/100 77/100
62 97342 Detroit OR 42/100 98/100
63 97489 Walterville OR 42/100 94/100
64 97539 Shady Cove OR 42/100 94/100
65 97365 Newport OR 44/100 90/100
66 97434 Dorena OR 44/100 90/100
67 97115 Dundee OR 45/100 79/100
68 97348 Halsey OR 45/100 86/100
69 97385 Sublimity OR 45/100 95/100
70 97907 Huntington OR 45/100 73/100
71 97056 Scappoose OR 47/100 77/100
72 97112 Cloverdale OR 47/100 85/100
73 97371 Rickreall OR 47/100 86/100
74 97375 Scotts Mills OR 47/100 91/100
75 97459 North Bend OR 47/100 86/100
76 97524 Eagle Point OR 47/100 89/100
77 97467 Reedsport OR 48/100 88/100
78 97017 Colton OR 49/100 97/100
79 97057 Shaniko OR 49/100 77/100
80 97424 Cottage Grove OR 49/100 81/100
81 97019 Corbett OR 50/100 70/100
82 97022 Eagle Creek OR 50/100 65/100
83 97067 Welches OR 50/100 78/100
84 97760 Terrebonne OR 50/100 89/100
85 97818 Boardman OR 50/100 59/100
86 97828 Enterprise OR 50/100 81/100
87 97032 Hubbard OR 52/100 98/100
88 97381 Silverton OR 52/100 79/100
89 97537 Rogue River OR 52/100 89/100
90 97601 Klamath Falls OR 52/100 79/100
91 97602 Klamath Falls OR 52/100 78/100
92 97603 Klamath Falls OR 52/100 78/100
93 97835 Helix OR 52/100 82/100
94 97843 Ione OR 52/100 82/100
95 97844 Irrigon OR 52/100 82/100
96 97426 Creswell OR 53/100 86/100
97 97453 Mapleton OR 54/100 83/100
98 97002 Aurora OR 55/100 82/100
99 97101 Amity OR 55/100 73/100
100 97135 Pacific City OR 55/100 76/100

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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