Clasificaciones 2026

Códigos ZIP con más infracciones de la EPA en Washington — 2026

Última actualización: 4 de junio de 2026

436 códigos postales clasificados por Violations N.º 1: código postal 99118 (Curlew, WA) — 35
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 436 ZIP codes with data in Washington, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All Washington Rankings

Statistic Value
ZIP codes ranked 436
Highest value 35
Median value 2
State Washington

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 99118 Curlew WA 35 48/100
2 99114 Colville WA 20 56/100
3 98250 Friday Harbor WA 19 70/100
4 98277 Oak Harbor WA 19 66/100
5 98278 Oak Harbor WA 19 71/100
6 98595 Westport WA 18 74/100
7 98577 Raymond WA 17 77/100
8 98849 Riverside WA 17 59/100
9 98837 Moses Lake WA 16 72/100
10 99343 Mesa WA 16 62/100
11 98260 Langley WA 15 80/100
12 98948 Toppenish WA 15 73/100
13 99009 Elk WA 15 63/100
14 99020 Marshall WA 15 54/100
15 98258 Lake Stevens WA 13 84/100
16 98823 Ephrata WA 13 70/100
17 98951 Wapato WA 13 67/100
18 99301 Pasco WA 13 80/100
19 99302 Pasco WA 13 79/100
20 99323 Burbank WA 13 71/100
21 99336 Kennewick WA 13 58/100
22 99337 Kennewick WA 13 58/100
23 99338 Kennewick WA 13 58/100
24 98224 Baring WA 12 73/100
25 98243 Deer Harbor WA 12 66/100
26 98520 Aberdeen WA 12 71/100
27 98816 Chelan WA 12 91/100
28 99324 College Place WA 12 77/100
29 99349 Mattawa WA 12 82/100
30 98262 Lummi Island WA 11 85/100
31 98531 Centralia WA 11 75/100
32 98802 East Wenatchee WA 11 73/100
33 98812 Brewster WA 11 69/100
34 98848 Quincy WA 11 75/100
35 99344 Othello WA 11 72/100
36 98245 Eastsound WA 10 93/100
37 98572 Pe Ell WA 10 90/100
38 98610 Carson WA 10 61/100
39 99156 Newport WA 10 51/100
40 99166 Republic WA 10 61/100
41 99362 Walla Walla WA 10 69/100
42 98564 Mossyrock WA 9 94/100
43 98672 White Salmon WA 9 78/100
44 98831 Manson WA 9 88/100
45 98862 Winthrop WA 9 64/100
46 98940 Ronald WA 9 77/100
47 98201 Everett WA 8 82/100
48 98203 Everett WA 8 87/100
49 98204 Everett WA 8 87/100
50 98205 Everett WA 8 87/100
51 98206 Everett WA 8 87/100
52 98207 Everett WA 8 91/100
53 98208 Everett WA 8 82/100
54 98213 Everett WA 8 91/100
55 98241 Darrington WA 8 85/100
56 98253 Greenbank WA 8 85/100
57 98272 Monroe WA 8 69/100
58 98511 Tumwater WA 8 77/100
59 98930 Grandview WA 8 81/100
60 98240 Custer WA 7 92/100
61 98674 Woodland WA 7 82/100
62 99003 Chattaroy WA 7 69/100
63 99330 Eltopia WA 7 80/100
64 99353 West Richland WA 7 72/100
65 99371 Washtucna WA 7 75/100
66 98014 Carnation WA 6 82/100
67 98239 Coupeville WA 6 94/100
68 98267 Marblemount WA 6 70/100
69 98362 Port Angeles WA 6 86/100
70 98363 Port Angeles WA 6 91/100
71 98365 Port Ludlow WA 6 87/100
72 98371 Puyallup WA 6 82/100
73 98372 Puyallup WA 6 87/100
74 98373 Puyallup WA 6 92/100
75 98374 Puyallup WA 6 87/100
76 98375 Puyallup WA 6 92/100
77 98563 Montesano WA 6 81/100
78 98648 Stevenson WA 6 42/100
79 98675 Yacolt WA 6 67/100
80 99029 Reardan WA 6 79/100
81 99032 Sprague WA 6 77/100
82 99033 Tekoa WA 6 79/100
83 99180 Usk WA 6 61/100
84 99335 Kahlotus WA 6 79/100
85 99350 Prosser WA 6 80/100
86 98248 Ferndale WA 5 82/100
87 98249 Freeland WA 5 88/100
88 98292 Stanwood WA 5 83/100
89 98382 Sequim WA 5 88/100
90 98532 Chehalis WA 5 75/100
91 98541 Elma WA 5 84/100
92 98582 Salkum WA 5 62/100
93 98612 Cathlamet WA 5 88/100
94 98826 Leavenworth WA 5 81/100
95 98832 Marlin WA 5 78/100
96 98850 Rock Island WA 5 79/100
97 98858 Waterville WA 5 78/100
98 98901 Yakima WA 5 77/100
99 98902 Yakima WA 5 82/100
100 98903 Yakima WA 5 72/100

Methodology

Violation counts include all types recorded in the EPA SDWIS database: Maximum Contaminant Level (MCL) violations, treatment technique violations, and monitoring/reporting violations. Both resolved and unresolved violations are counted. Higher counts may reflect longer system histories or larger service areas.

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 counts as an EPA water violation?

EPA violations include exceeding Maximum Contaminant Levels (MCLs), failing to treat water properly (treatment technique violations), and not testing or reporting on schedule (monitoring violations). Health-based violations are the most serious.

Does a high violation count mean the water is unsafe now?

Not necessarily. Many violations are historical or monitoring-related. However, a pattern of repeated violations indicates systemic issues with water system management or infrastructure.

Explore More Rankings

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

Clasificaciones relacionadas

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).

Reciba alertas de seguridad para Washington

Actualizaciones gratuitas cuando la EPA publique nuevos datos para esta zona. Sin spam.

Puede cancelar la suscripción en cualquier momento. Política de privacidad.

Compartir esta página

X Facebook
Ver opciones de filtros de agua Herramienta gratuita — sin llamada telefónica requerida.