ZIP Codes with Most EPA Violations in North Carolina...

Out of 710 ZIP codes with data in North Carolina, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All North Carolina Rankings

Statistic	Value
ZIP codes ranked	710
Highest value	129
Median value	8
State	North Carolina

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Violations	Safety Score
1	27511	Cary	NC	129	59/100
2	27512	Cary	NC	129	66/100
3	27513	Cary	NC	129	64/100
4	27518	Cary	NC	129	59/100
5	27519	Cary	NC	129	69/100
6	28315	Aberdeen	NC	82	70/100
7	27601	Raleigh	NC	78	61/100
8	27602	Raleigh	NC	78	73/100
9	27603	Raleigh	NC	78	56/100
10	27604	Raleigh	NC	78	46/100
11	27605	Raleigh	NC	78	61/100
12	27606	Raleigh	NC	78	51/100
13	27607	Raleigh	NC	78	51/100
14	27608	Raleigh	NC	78	46/100
15	27609	Raleigh	NC	78	46/100
16	27610	Raleigh	NC	78	51/100
17	27611	Raleigh	NC	78	73/100
18	27612	Raleigh	NC	78	51/100
19	27613	Raleigh	NC	78	56/100
20	27614	Raleigh	NC	78	61/100
21	27615	Raleigh	NC	78	56/100
22	27616	Raleigh	NC	78	61/100
23	27617	Raleigh	NC	78	61/100
24	27619	Raleigh	NC	78	56/100
25	27620	Raleigh	NC	78	56/100
26	27621	Raleigh	NC	78	73/100
27	27622	Raleigh	NC	78	61/100
28	27623	Raleigh	NC	78	61/100
29	27624	Raleigh	NC	78	56/100
30	27625	Raleigh	NC	78	56/100
31	27626	Raleigh	NC	78	61/100
32	27627	Raleigh	NC	78	56/100
33	27628	Raleigh	NC	78	61/100
34	27629	Raleigh	NC	78	61/100
35	27634	Raleigh	NC	78	73/100
36	27635	Raleigh	NC	78	56/100
37	27636	Raleigh	NC	78	56/100
38	27640	Raleigh	NC	78	56/100
39	27650	Raleigh	NC	78	73/100
40	27656	Raleigh	NC	78	56/100
41	27658	Raleigh	NC	78	56/100
42	27661	Raleigh	NC	78	56/100
43	27668	Raleigh	NC	78	56/100
44	27675	Raleigh	NC	78	56/100
45	27676	Raleigh	NC	78	56/100
46	27690	Raleigh	NC	78	56/100
47	27695	Raleigh	NC	78	56/100
48	27697	Raleigh	NC	78	56/100
49	27698	Raleigh	NC	78	73/100
50	27699	Raleigh	NC	78	56/100
51	27514	Chapel Hill	NC	51	61/100
52	27515	Chapel Hill	NC	51	76/100
53	27516	Chapel Hill	NC	51	71/100
54	27517	Chapel Hill	NC	51	66/100
55	27599	Chapel Hill	NC	51	75/100
56	28201	Charlotte	NC	38	84/100
57	28202	Charlotte	NC	38	83/100
58	28203	Charlotte	NC	38	78/100
59	28204	Charlotte	NC	38	78/100
60	28205	Charlotte	NC	38	68/100
61	28206	Charlotte	NC	38	73/100
62	28207	Charlotte	NC	38	68/100
63	28208	Charlotte	NC	38	73/100
64	28209	Charlotte	NC	38	68/100
65	28210	Charlotte	NC	38	73/100
66	28211	Charlotte	NC	38	68/100
67	28212	Charlotte	NC	38	78/100
68	28213	Charlotte	NC	38	78/100
69	28214	Charlotte	NC	38	68/100
70	28215	Charlotte	NC	38	68/100
71	28216	Charlotte	NC	38	73/100
72	28217	Charlotte	NC	38	78/100
73	28218	Charlotte	NC	38	84/100
74	28219	Charlotte	NC	38	84/100
75	28220	Charlotte	NC	38	84/100
76	28221	Charlotte	NC	38	84/100
77	28222	Charlotte	NC	38	83/100
78	28223	Charlotte	NC	38	84/100
79	28224	Charlotte	NC	38	83/100
80	28226	Charlotte	NC	38	73/100
81	28227	Charlotte	NC	38	78/100
82	28228	Charlotte	NC	38	83/100
83	28229	Charlotte	NC	38	84/100
84	28230	Charlotte	NC	38	84/100
85	28231	Charlotte	NC	38	84/100
86	28232	Charlotte	NC	38	84/100
87	28233	Charlotte	NC	38	84/100
88	28234	Charlotte	NC	38	84/100
89	28235	Charlotte	NC	38	83/100
90	28236	Charlotte	NC	38	84/100
91	28237	Charlotte	NC	38	83/100
92	28241	Charlotte	NC	38	83/100
93	28242	Charlotte	NC	38	84/100
94	28243	Charlotte	NC	38	84/100
95	28244	Charlotte	NC	38	84/100
96	28246	Charlotte	NC	38	84/100
97	28247	Charlotte	NC	38	84/100
98	28250	Charlotte	NC	38	84/100
99	28253	Charlotte	NC	38	84/100
100	28254	Charlotte	NC	38	84/100

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.