Clasificaciones 2026

Códigos ZIP con más infracciones de la EPA en South Dakota — 2026

Última actualización: 4 de junio de 2026

136 códigos postales clasificados por Violations N.º 1: código postal 57243 (Henry, SD) — 19

Out of 136 ZIP codes with data in South Dakota, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All South Dakota Rankings

Statistic Value
ZIP codes ranked 136
Highest value 19
Median value 2
State South Dakota

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 57243 Henry SD 19 66/100
2 57735 Edgemont SD 17 76/100
3 57322 Carpenter SD 10 44/100
4 57645 Morristown SD 10 69/100
5 57040 Lesterville SD 9 56/100
6 57260 Rosholt SD 9 68/100
7 57475 Tolstoy SD 9 62/100
8 57722 Buffalo Gap SD 9 77/100
9 57401 Aberdeen SD 8 49/100
10 57402 Aberdeen SD 8 64/100
11 57762 Nisland SD 8 73/100
12 57719 Box Elder SD 6 66/100
13 57738 Fairburn SD 6 82/100
14 57625 Eagle Butte SD 5 82/100
15 57744 Hermosa SD 5 69/100
16 57761 New Underwood SD 5 82/100
17 57788 Vale SD 5 82/100
18 57078 Yankton SD 4 64/100
19 57232 Eden SD 4 65/100
20 57266 Summit SD 4 57/100
21 57272 Wallace SD 4 67/100
22 57315 Avon SD 4 58/100
23 57366 Parkston SD 4 69/100
24 57456 Leola SD 4 61/100
25 57552 Midland SD 4 82/100
26 57769 Piedmont SD 4 81/100
27 57783 Spearfish SD 4 74/100
28 57799 Spearfish SD 4 78/100
29 57001 Alcester SD 3 67/100
30 57077 Worthing SD 3 65/100
31 57227 Corona SD 3 66/100
32 57314 Artesian SD 3 61/100
33 57321 Canova SD 3 62/100
34 57349 Howard SD 3 62/100
35 57355 Kimball SD 3 64/100
36 57434 Conde SD 3 69/100
37 57451 Ipswich SD 3 69/100
38 57472 Selby SD 3 65/100
39 57474 Stratford SD 3 67/100
40 57551 Martin SD 3 80/100
41 57717 Belle Fourche SD 3 75/100
42 57785 Sturgis SD 3 77/100
43 57004 Beresford SD 2 62/100
44 57005 Brandon SD 2 64/100
45 57006 Brookings SD 2 49/100
46 57007 Brookings SD 2 52/100
47 57028 Flandreau SD 2 64/100
48 57046 Mission Hill SD 2 63/100
49 57056 Brandon SD 2 65/100
50 57059 Scotland SD 2 65/100
51 57065 Trent SD 2 64/100
52 57070 Viborg SD 2 69/100
53 57101 Sioux Falls SD 2 66/100
54 57103 Sioux Falls SD 2 61/100
55 57104 Sioux Falls SD 2 56/100
56 57105 Sioux Falls SD 2 56/100
57 57106 Sioux Falls SD 2 61/100
58 57107 Sioux Falls SD 2 61/100
59 57108 Sioux Falls SD 2 61/100
60 57109 Sioux Falls SD 2 61/100
61 57110 Sioux Falls SD 2 66/100
62 57117 Sioux Falls SD 2 61/100
63 57118 Sioux Falls SD 2 61/100
64 57186 Sioux Falls SD 2 61/100
65 57189 Sioux Falls SD 2 61/100
66 57192 Sioux Falls SD 2 61/100
67 57193 Sioux Falls SD 2 61/100
68 57194 Sioux Falls SD 2 61/100
69 57195 Sioux Falls SD 2 61/100
70 57196 Sioux Falls SD 2 61/100
71 57197 Sioux Falls SD 2 61/100
72 57198 Sioux Falls SD 2 61/100
73 57216 Big Stone City SD 2 64/100
74 57219 Bristol SD 2 65/100
75 57276 White SD 2 65/100
76 57328 Corsica SD 2 65/100
77 57330 Delmont SD 2 65/100
78 57350 Huron SD 2 62/100
79 57356 Lake Andes SD 2 66/100
80 57381 Wessington SD 2 65/100
81 57382 Wessington Springs SD 2 62/100
82 57399 Huron SD 2 62/100
83 57430 Britton SD 2 69/100
84 57438 Faulkton SD 2 69/100
85 57440 Frankfort SD 2 69/100
86 57448 Hosmer SD 2 61/100
87 57528 Colome SD 2 49/100
88 57579 White River SD 2 82/100
89 57620 Bison SD 2 64/100
90 57632 Herreid SD 2 65/100
91 57763 Oelrichs SD 2 82/100
92 57766 Oral SD 2 81/100
93 57793 Whitewood SD 2 79/100
94 57003 Baltic SD 1 68/100
95 57012 Canistota SD 1 66/100
96 57015 Chancellor SD 1 64/100
97 57024 Egan SD 1 70/100
98 57026 Elkton SD 1 66/100
99 57048 Montrose SD 1 63/100
100 57062 Springfield SD 1 65/100

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 →


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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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