2026 Rankings

ZIP Codes with Most EPA Violations in Maine — 2026

Last updated: June 4, 2026

210 ZIP codes ranked by Violations #1: ZIP 04640 (Hancock, ME) — 40
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 210 ZIP codes with data in Maine, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All Maine Rankings

Statistic Value
ZIP codes ranked 210
Highest value 40
Median value 4
State Maine

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 04640 Hancock ME 40 45/100
2 04401 Bangor ME 29 52/100
3 04402 Bangor ME 29 57/100
4 04274 Poland ME 25 30/100
5 04901 Waterville ME 23 38/100
6 04903 Waterville ME 23 39/100
7 04578 Wiscasset ME 22 56/100
8 04605 Ellsworth ME 22 55/100
9 04009 Bridgton ME 21 56/100
10 04101 Portland ME 21 62/100
11 04102 Portland ME 21 62/100
12 04103 Portland ME 21 62/100
13 04104 Portland ME 21 67/100
14 04109 Portland ME 21 67/100
15 04112 Portland ME 21 62/100
16 04122 Portland ME 21 62/100
17 04123 Portland ME 21 62/100
18 04124 Portland ME 21 62/100
19 04668 Princeton ME 21 79/100
20 04037 Fryeburg ME 20 46/100
21 04743 Fort Kent ME 20 46/100
22 04988 Unity ME 18 58/100
23 04429 Holden ME 16 67/100
24 04649 Jonesport ME 16 59/100
25 04758 Mars Hill ME 16 51/100
26 04419 Carmel ME 15 51/100
27 04915 Belfast ME 15 76/100
28 04282 Turner ME 14 56/100
29 04769 Presque Isle ME 14 60/100
30 04937 Fairfield ME 14 58/100
31 04071 Raymond ME 13 43/100
32 04357 Richmond ME 13 70/100
33 04614 Blue Hill ME 13 42/100
34 04664 Sullivan ME 13 33/100
35 04677 Sorrento ME 13 33/100
36 04843 Camden ME 13 69/100
37 04350 Litchfield ME 12 63/100
38 04464 Monson ME 12 51/100
39 04634 Franklin ME 12 62/100
40 04079 Harpswell ME 11 57/100
41 04086 Topsham ME 11 75/100
42 04280 Sabattus ME 11 65/100
43 04422 Charleston ME 11 55/100
44 04681 Stonington ME 11 62/100
45 04684 Surry ME 11 56/100
46 04750 Limestone ME 11 59/100
47 04751 Limestone ME 11 59/100
48 04947 Kingfield ME 11 54/100
49 04011 Brunswick ME 10 57/100
50 04093 Buxton ME 10 60/100
51 04221 Canton ME 10 59/100
52 04416 Bucksport ME 10 62/100
53 04660 Mount Desert ME 10 57/100
54 04662 Northeast Harbor ME 10 61/100
55 04849 Lincolnville ME 10 72/100
56 04230 East Poland ME 9 57/100
57 04239 Jay ME 9 61/100
58 04414 Brownville ME 9 49/100
59 04420 Castine ME 9 61/100
60 04421 Castine ME 9 66/100
61 04609 Bar Harbor ME 9 68/100
62 04745 Frenchville ME 9 60/100
63 04863 Vinalhaven ME 9 58/100
64 04090 Wells ME 8 45/100
65 04443 Guilford ME 8 52/100
66 04922 Burnham ME 8 72/100
67 04070 Scarborough ME 7 60/100
68 04074 Scarborough ME 7 54/100
69 04210 Auburn ME 7 49/100
70 04211 Auburn ME 7 54/100
71 04212 Auburn ME 7 59/100
72 04427 Corinth ME 7 60/100
73 04856 Rockport ME 7 75/100
74 04920 Bingham ME 7 67/100
75 04039 Gray ME 6 68/100
76 04055 Naples ME 6 38/100
77 04236 Greene ME 6 66/100
78 04250 Lisbon ME 6 63/100
79 04289 West Paris ME 6 68/100
80 04330 Augusta ME 6 57/100
81 04332 Augusta ME 6 67/100
82 04333 Augusta ME 6 63/100
83 04336 Augusta ME 6 63/100
84 04338 Augusta ME 6 63/100
85 04345 Gardiner ME 6 56/100
86 04496 Winterport ME 6 66/100
87 04539 Bristol ME 6 69/100
88 04572 Waldoboro ME 6 66/100
89 04740 Easton ME 6 63/100
90 04854 Owls Head ME 6 71/100
91 04953 Newport ME 6 65/100
92 04976 Skowhegan ME 6 55/100
93 04062 Windham ME 5 62/100
94 04092 Westbrook ME 5 62/100
95 04098 Westbrook ME 5 62/100
96 04238 Hebron ME 5 48/100
97 04287 Bowdoin ME 5 79/100
98 04468 Old Town ME 5 60/100
99 04543 Damariscotta ME 5 69/100
100 04654 Machias ME 5 81/100

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

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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