Out of 251 ZIP codes with data in South Carolina, these are the highest-ranked areas for recorded epa violations. See also: National ZIP Codes with Most EPA Water Violations | All South Carolina Rankings
| Statistic | Value |
|---|---|
| ZIP codes ranked | 251 |
| Highest value | 19 |
| Median value | 3 |
| State | South Carolina |
Top 100 Worst ZIP Codes
| Rank | ZIP Code | City | State | Recorded EPA Violations | Safety Score |
|---|---|---|---|---|---|
| 1 | 29154 | Sumter | SC | 19 | — |
| 2 | 29829 | Graniteville | SC | 19 | 67/100 |
| 3 | 29061 | Hopkins | SC | 18 | 72/100 |
| 4 | 29209 | Columbia | SC | 15 | 76/100 |
| 5 | 29483 | Summerville | SC | 14 | — |
| 6 | 29620 | Abbeville | SC | 14 | — |
| 7 | 29170 | West Columbia | SC | 13 | — |
| 8 | 29715 | Fort Mill | SC | 13 | 76/100 |
| 9 | 29851 | Warrenville | SC | 13 | 83/100 |
| 10 | 29486 | Summerville | SC | 12 | 78/100 |
| 11 | 29627 | Belton | SC | 12 | 58/100 |
| 12 | 29630 | Central | SC | 12 | — |
| 13 | 29655 | Iva | SC | 12 | 58/100 |
| 14 | 29708 | Fort Mill | SC | 12 | 77/100 |
| 15 | 29801 | Aiken | SC | 12 | 83/100 |
| 16 | 29036 | Chapin | SC | 11 | 79/100 |
| 17 | 29657 | Liberty | SC | 11 | — |
| 18 | 29827 | Fairfax | SC | 11 | — |
| 19 | 29932 | Luray | SC | 11 | — |
| 20 | 29040 | Dalzell | SC | 10 | — |
| 21 | 29056 | Greeleyville | SC | 10 | — |
| 22 | 29128 | Rembert | SC | 10 | — |
| 23 | 29440 | Georgetown | SC | 10 | — |
| 24 | 29628 | Calhoun Falls | SC | 10 | — |
| 25 | 29643 | Fair Play | SC | 10 | — |
| 26 | 29654 | Honea Path | SC | 10 | 59/100 |
| 27 | 29678 | Seneca | SC | 10 | — |
| 28 | 29845 | Plum Branch | SC | 10 | — |
| 29 | 29466 | Mount Pleasant | SC | 9 | 77/100 |
| 30 | 29693 | Westminster | SC | 9 | — |
| 31 | 29803 | Aiken | SC | 9 | 83/100 |
| 32 | 29832 | Johnston | SC | 9 | — |
| 33 | 29015 | Blair | SC | 8 | — |
| 34 | 29044 | Eastover | SC | 8 | — |
| 35 | 29138 | Saluda | SC | 8 | — |
| 36 | 29510 | Andrews | SC | 8 | — |
| 37 | 29518 | Cades | SC | 8 | — |
| 38 | 29520 | Cheraw | SC | 8 | 78/100 |
| 39 | 29556 | Kingstree | SC | 8 | — |
| 40 | 29584 | Patrick | SC | 8 | 95/100 |
| 41 | 29590 | Salters | SC | 8 | — |
| 42 | 29671 | Pickens | SC | 8 | — |
| 43 | 29847 | Trenton | SC | 8 | 67/100 |
| 44 | 29073 | Lexington | SC | 7 | — |
| 45 | 29129 | Ridge Spring | SC | 7 | — |
| 46 | 29223 | Columbia | SC | 7 | 79/100 |
| 47 | 29379 | Union | SC | 7 | — |
| 48 | 29625 | Anderson | SC | 7 | 79/100 |
| 49 | 29626 | Anderson | SC | 7 | 62/100 |
| 50 | 29685 | Sunset | SC | 7 | — |
| 51 | 29689 | Townville | SC | 7 | 80/100 |
| 52 | 29730 | Rock Hill | SC | 7 | 79/100 |
| 53 | 29805 | Aiken | SC | 7 | 83/100 |
| 54 | 29842 | Beech Island | SC | 7 | 80/100 |
| 55 | 29849 | Ulmer | SC | 7 | — |
| 56 | 29063 | Irmo | SC | 6 | 81/100 |
| 57 | 29150 | Sumter | SC | 6 | — |
| 58 | 29554 | Hemingway | SC | 6 | — |
| 59 | 29555 | Johnsonville | SC | 6 | 97/100 |
| 60 | 29670 | Pendleton | SC | 6 | 77/100 |
| 61 | 29682 | Six Mile | SC | 6 | — |
| 62 | 29706 | Chester | SC | 6 | — |
| 63 | 29102 | Manning | SC | 5 | — |
| 64 | 29172 | West Columbia | SC | 5 | — |
| 65 | 29203 | Columbia | SC | 5 | 81/100 |
| 66 | 29206 | Columbia | SC | 5 | 81/100 |
| 67 | 29207 | Columbia | SC | 5 | 81/100 |
| 68 | 29526 | Conway | SC | 5 | 80/100 |
| 69 | 29527 | Conway | SC | 5 | 80/100 |
| 70 | 29569 | Loris | SC | 5 | 79/100 |
| 71 | 29572 | Myrtle Beach | SC | 5 | 82/100 |
| 72 | 29621 | Anderson | SC | 5 | 79/100 |
| 73 | 29642 | Easley | SC | 5 | — |
| 74 | 29684 | Starr | SC | 5 | 64/100 |
| 75 | 29702 | Blacksburg | SC | 5 | — |
| 76 | 29710 | Clover | SC | 5 | 81/100 |
| 77 | 29712 | Edgemoor | SC | 5 | — |
| 78 | 29717 | Hickory Grove | SC | 5 | — |
| 79 | 29726 | Mc Connells | SC | 5 | — |
| 80 | 29732 | Rock Hill | SC | 5 | 81/100 |
| 81 | 29742 | Sharon | SC | 5 | — |
| 82 | 29743 | Smyrna | SC | 5 | — |
| 83 | 29745 | York | SC | 5 | 81/100 |
| 84 | 29821 | Clarks Hill | SC | 5 | — |
| 85 | 29835 | Mc Cormick | SC | 5 | — |
| 86 | 29848 | Troy | SC | 5 | — |
| 87 | 29911 | Brunson | SC | 5 | — |
| 88 | 29924 | Hampton | SC | 5 | — |
| 89 | 29075 | Little Mountain | SC | 4 | — |
| 90 | 29125 | Pinewood | SC | 4 | — |
| 91 | 29130 | Ridgeway | SC | 4 | — |
| 92 | 29163 | Vance | SC | 4 | — |
| 93 | 29180 | Winnsboro | SC | 4 | — |
| 94 | 29229 | Columbia | SC | 4 | 80/100 |
| 95 | 29512 | Bennettsville | SC | 4 | — |
| 96 | 29566 | Little River | SC | 4 | — |
| 97 | 29570 | Mc Coll | SC | 4 | — |
| 98 | 29640 | Easley | SC | 4 | — |
| 99 | 29669 | Pelzer | SC | 4 | 62/100 |
| 100 | 29672 | Seneca | SC | 4 | — |
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: 2026-08-31.
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
- Worst ZIP Codes for Lead in Water in South Carolina
- Lowest Home Safety Scores in South Carolina
- Highest Home Safety Scores in South Carolina
- Historical NFIP Claim Counts in South Carolina
- ZIP Codes with Highest Energy Costs in South Carolina
- EPA Radon Zone 1 ZIP Codes in South Carolina
- ZIP Codes with PFAS Detections in South Carolina
- Least Reliable Water Systems in South Carolina
- Environmental Justice Concern Areas in South Carolina
- Worst ZIP Codes for Homebuyers in South Carolina
- ZIP Codes with Worst CO & Gas Risk in South Carolina
- Safest ZIP Codes for Gas & CO Risk in South Carolina
- ZIP Codes with Worst Wildfire Smoke Risk in South Carolina
- Safest ZIP Codes for Wildfire Smoke in South Carolina
- All Rankings