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

Out of 220 ZIP codes with data in South Carolina, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All South Carolina Rankings

Statistic	Value
ZIP codes ranked	220
Highest value	12
Median value	3
State	South Carolina

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Violations	Safety Score
1	29822	Clearwater	SC	12	90/100
2	29520	Cheraw	SC	10	67/100
3	29556	Kingstree	SC	10	83/100
4	29745	York	SC	10	74/100
5	29801	Aiken	SC	10	70/100
6	29802	Aiken	SC	10	66/100
7	29803	Aiken	SC	10	70/100
8	29804	Aiken	SC	10	66/100
9	29805	Aiken	SC	10	66/100
10	29808	Aiken	SC	10	66/100
11	29918	Estill	SC	10	83/100
12	29031	Carlisle	SC	8	67/100
13	29053	Gaston	SC	8	92/100
14	29108	Newberry	SC	8	89/100
15	29138	Saluda	SC	8	87/100
16	29628	Calhoun Falls	SC	8	72/100
17	29040	Dalzell	SC	7	78/100
18	29061	Hopkins	SC	7	86/100
19	29148	Summerton	SC	7	84/100
20	29364	Lockhart	SC	7	87/100
21	29470	Ravenel	SC	7	88/100
22	29585	Pawleys Island	SC	7	68/100
23	29710	Clover	SC	7	77/100
24	29939	Scotia	SC	7	90/100
25	29045	Elgin	SC	6	91/100
26	29065	Jenkinsville	SC	6	98/100
27	29464	Mount Pleasant	SC	6	74/100
28	29465	Mount Pleasant	SC	6	94/100
29	29466	Mount Pleasant	SC	6	79/100
30	29510	Andrews	SC	6	80/100
31	29627	Belton	SC	6	65/100
32	29201	Columbia	SC	5	85/100
33	29202	Columbia	SC	5	90/100
34	29203	Columbia	SC	5	80/100
35	29204	Columbia	SC	5	80/100
36	29205	Columbia	SC	5	75/100
37	29206	Columbia	SC	5	75/100
38	29207	Columbia	SC	5	90/100
39	29208	Columbia	SC	5	93/100
40	29209	Columbia	SC	5	80/100
41	29210	Columbia	SC	5	75/100
42	29211	Columbia	SC	5	93/100
43	29212	Columbia	SC	5	80/100
44	29214	Columbia	SC	5	90/100
45	29215	Columbia	SC	5	90/100
46	29216	Columbia	SC	5	93/100
47	29217	Columbia	SC	5	93/100
48	29218	Columbia	SC	5	93/100
49	29219	Columbia	SC	5	93/100
50	29220	Columbia	SC	5	93/100
51	29221	Columbia	SC	5	90/100
52	29222	Columbia	SC	5	90/100
53	29223	Columbia	SC	5	80/100
54	29224	Columbia	SC	5	93/100
55	29225	Columbia	SC	5	93/100
56	29226	Columbia	SC	5	93/100
57	29227	Columbia	SC	5	93/100
58	29228	Columbia	SC	5	90/100
59	29229	Columbia	SC	5	85/100
60	29230	Columbia	SC	5	90/100
61	29240	Columbia	SC	5	93/100
62	29250	Columbia	SC	5	93/100
63	29260	Columbia	SC	5	90/100
64	29290	Columbia	SC	5	93/100
65	29292	Columbia	SC	5	93/100
66	29353	Jonesville	SC	5	94/100
67	29395	Jonesville	SC	5	94/100
68	29483	Summerville	SC	5	81/100
69	29484	Summerville	SC	5	94/100
70	29485	Summerville	SC	5	76/100
71	29486	Summerville	SC	5	86/100
72	29676	Salem	SC	5	76/100
73	29809	New Ellenton	SC	5	97/100
74	29827	Fairfax	SC	5	88/100
75	29002	Ballentine	SC	4	68/100
76	29102	Manning	SC	4	87/100
77	29379	Union	SC	4	94/100
78	29438	Edisto Island	SC	4	78/100
79	29448	Harleyville	SC	4	91/100
80	29526	Conway	SC	4	71/100
81	29527	Conway	SC	4	76/100
82	29528	Conway	SC	4	91/100
83	29554	Hemingway	SC	4	86/100
84	29621	Anderson	SC	4	77/100
85	29622	Anderson	SC	4	82/100
86	29623	Anderson	SC	4	82/100
87	29624	Anderson	SC	4	82/100
88	29625	Anderson	SC	4	82/100
89	29626	Anderson	SC	4	82/100
90	29657	Liberty	SC	4	80/100
91	29036	Chapin	SC	3	89/100
92	29048	Eutawville	SC	3	89/100
93	29113	Norway	SC	3	69/100
94	29340	Gaffney	SC	3	74/100
95	29341	Gaffney	SC	3	74/100
96	29342	Gaffney	SC	3	72/100
97	29360	Laurens	SC	3	82/100
98	29429	Awendaw	SC	3	84/100
99	29436	Cross	SC	3	94/100
100	29455	Johns Island	SC	3	74/100

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.