Worst ZIP Codes for Lead in Water in South Carolina ...

Out of 446 ZIP codes with data in South Carolina, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All South Carolina Rankings

Statistic	Value
ZIP codes ranked	446
Highest value	460.0 ppb
Median value	2.0 ppb
State	South Carolina

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Lead (mg/L)	Safety Score
1	29148	Summerton	SC	460.0 ppb	84/100
2	29322	Campobello	SC	118.0 ppb	53/100
3	29356	Landrum	SC	118.0 ppb	70/100
4	29037	Chappells	SC	90.0 ppb	66/100
5	29108	Newberry	SC	90.0 ppb	89/100
6	29126	Pomaria	SC	90.0 ppb	66/100
7	29145	Silverstreet	SC	90.0 ppb	95/100
8	29355	Kinards	SC	90.0 ppb	53/100
9	29372	Pacolet	SC	81.0 ppb	75/100
10	29676	Salem	SC	70.0 ppb	76/100
11	29033	Cayce	SC	44.0 ppb	85/100
12	29172	West Columbia	SC	44.0 ppb	95/100
13	29113	Norway	SC	17.0 ppb	69/100
14	29137	Salley	SC	15.0 ppb	68/100
15	29697	Williamston	SC	15.0 ppb	58/100
16	29160	Swansea	SC	13.0 ppb	73/100
17	29365	Lyman	SC	13.0 ppb	63/100
18	29002	Ballentine	SC	12.0 ppb	68/100
19	29631	Clemson	SC	12.0 ppb	76/100
20	29632	Clemson	SC	12.0 ppb	81/100
21	29633	Clemson	SC	12.0 ppb	81/100
22	29634	Clemson	SC	12.0 ppb	81/100
23	29055	Great Falls	SC	11.0 ppb	78/100
24	29178	Whitmire	SC	10.0 ppb	95/100
25	29707	Fort Mill	SC	9.0 ppb	94/100
26	29708	Fort Mill	SC	9.0 ppb	77/100
27	29715	Fort Mill	SC	9.0 ppb	82/100
28	29716	Fort Mill	SC	9.0 ppb	82/100
29	29168	Wedgefield	SC	7.8 ppb	99/100
30	29817	Blackville	SC	7.5 ppb	88/100
31	29054	Gilbert	SC	7.0 ppb	95/100
32	29070	Leesville	SC	7.0 ppb	73/100
33	29627	Belton	SC	7.0 ppb	65/100
34	29667	Norris	SC	7.0 ppb	76/100
35	29585	Pawleys Island	SC	6.9 ppb	68/100
36	29016	Blythewood	SC	6.0 ppb	65/100
37	29044	Eastover	SC	6.0 ppb	93/100
38	29045	Elgin	SC	6.0 ppb	91/100
39	29075	Little Mountain	SC	6.0 ppb	66/100
40	29130	Ridgeway	SC	6.0 ppb	81/100
41	29132	Rion	SC	6.0 ppb	66/100
42	29147	State Park	SC	6.0 ppb	66/100
43	29177	White Rock	SC	6.0 ppb	66/100
44	29180	Winnsboro	SC	6.0 ppb	69/100
45	29201	Columbia	SC	6.0 ppb	85/100
46	29202	Columbia	SC	6.0 ppb	90/100
47	29203	Columbia	SC	6.0 ppb	80/100
48	29204	Columbia	SC	6.0 ppb	80/100
49	29205	Columbia	SC	6.0 ppb	75/100
50	29206	Columbia	SC	6.0 ppb	75/100
51	29207	Columbia	SC	6.0 ppb	90/100
52	29208	Columbia	SC	6.0 ppb	93/100
53	29209	Columbia	SC	6.0 ppb	80/100
54	29210	Columbia	SC	6.0 ppb	75/100
55	29211	Columbia	SC	6.0 ppb	93/100
56	29212	Columbia	SC	6.0 ppb	80/100
57	29214	Columbia	SC	6.0 ppb	90/100
58	29215	Columbia	SC	6.0 ppb	90/100
59	29216	Columbia	SC	6.0 ppb	93/100
60	29217	Columbia	SC	6.0 ppb	93/100
61	29218	Columbia	SC	6.0 ppb	93/100
62	29219	Columbia	SC	6.0 ppb	93/100
63	29220	Columbia	SC	6.0 ppb	93/100
64	29221	Columbia	SC	6.0 ppb	90/100
65	29222	Columbia	SC	6.0 ppb	90/100
66	29223	Columbia	SC	6.0 ppb	80/100
67	29224	Columbia	SC	6.0 ppb	93/100
68	29225	Columbia	SC	6.0 ppb	93/100
69	29226	Columbia	SC	6.0 ppb	93/100
70	29227	Columbia	SC	6.0 ppb	93/100
71	29228	Columbia	SC	6.0 ppb	90/100
72	29229	Columbia	SC	6.0 ppb	85/100
73	29230	Columbia	SC	6.0 ppb	90/100
74	29240	Columbia	SC	6.0 ppb	93/100
75	29250	Columbia	SC	6.0 ppb	93/100
76	29260	Columbia	SC	6.0 ppb	90/100
77	29290	Columbia	SC	6.0 ppb	93/100
78	29292	Columbia	SC	6.0 ppb	93/100
79	29704	Catawba	SC	6.0 ppb	80/100
80	29712	Edgemoor	SC	6.0 ppb	53/100
81	29726	Mc Connells	SC	6.0 ppb	53/100
82	29730	Rock Hill	SC	6.0 ppb	77/100
83	29731	Rock Hill	SC	6.0 ppb	82/100
84	29732	Rock Hill	SC	6.0 ppb	77/100
85	29733	Rock Hill	SC	6.0 ppb	82/100
86	29734	Rock Hill	SC	6.0 ppb	82/100
87	29036	Chapin	SC	5.0 ppb	89/100
88	29053	Gaston	SC	5.0 ppb	92/100
89	29164	Wagener	SC	5.0 ppb	95/100
90	29630	Central	SC	5.0 ppb	83/100
91	29655	Iva	SC	5.0 ppb	81/100
92	29659	Lowndesville	SC	5.0 ppb	53/100
93	29688	Tigerville	SC	5.0 ppb	53/100
94	29690	Travelers Rest	SC	5.0 ppb	65/100
95	29706	Chester	SC	5.0 ppb	95/100
96	29714	Fort Lawn	SC	5.0 ppb	95/100
97	29720	Lancaster	SC	5.0 ppb	90/100
98	29721	Lancaster	SC	5.0 ppb	99/100
99	29722	Lancaster	SC	5.0 ppb	99/100
100	29519	Centenary	SC	4.9 ppb	66/100

Methodology

Lead rankings are based on the 90th percentile lead testing value (PB90) reported by water systems under the Lead and Copper Rule. When CCR data is unavailable, EPA SDWIS lead sampling data is used. The EPA action level for lead is 15 ppb (0.015 mg/L). There is no safe level of lead exposure.

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 is a dangerous lead level in water?

The EPA action level is 15 parts per billion (ppb). The American Academy of Pediatrics recommends no more than 1 ppb for school drinking water. There is no safe level of lead exposure for children.

How is lead measured in water?

Water systems collect samples from homes with known lead service lines or lead solder. The 90th percentile value (PB90) means 90% of samples tested below that level. If PB90 exceeds 15 ppb, the system must take corrective action.