Aiken County, South Carolina
26 ZIP codes · Avg score 81/100 · Grade B · Updated 2026-06-04
Aiken County's tap water quality puts it in the upper tier nationally; the 26 ZIP codes here record few health-based violations.
How Aiken County Compares
How Aiken County Compares
Aiken County scores 3 points above the South Carolina state average (78/100) and 13 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Aiken County, South Carolina
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.9 (asthma 9.8%, diabetes 14.5%)
Estimated additional annual cost per homeowner: $460, driven primarily by energy_code_gap
Infrastructure: 0.325% avg pipe failure probability, 8% of ZIPs at high risk
50.7% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Aiken County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 66 violations. Past 5 years: 76 total (76 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $460
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
73,833 housing units in Aiken County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Aiken County
Remediation costs are relatively manageable for most homeowners in Aiken County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Aiken County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Aiken County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Oakhill S/d (sc0250004) | 243 | 65 |
| 2 | Aiken City of (0210001) | 45,090 | 60 |
| 3 | Montmorenci W/d (sc0220008) | 3,837 | 60 |
| 4 | College Acres Public W/d (sc0220002) | 1,360 | 60 |
| 5 | Aiken-vale Svc C City of (sc0250009) | 145 | 60 |
24 total water systems serve Aiken County.
All ZIP Codes in Aiken County
26 ZIP codes tracked in Aiken County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 29105 | Monetta | 99 | A | 0 | — |
| 2 | 29828 | Gloverville | 99 | A | 0 | $189K |
| 3 | 29861 | North Augusta | 99 | A | 1 | — |
| 4 | 29834 | Langley | 98 | A | 2 | — |
| 5 | 29809 | New Ellenton | 97 | A | 5 (2 health) | $129K |
| 6 | 29816 | Bath | 97 | A | 1 | $86K |
| 7 | 29164 | Wagener | 95 | A | 0 | $186K |
| 8 | 29829 | Graniteville | 95 | A | 0 | $226K |
| 9 | 29831 | Jackson | 95 | A | 0 | $164K |
| 10 | 29842 | Beech Island | 95 | A | 0 | $113K |
| 11 | 29822 | Clearwater | 90 | A | 12 | — |
| 12 | 29841 | North Augusta | 90 | A | 1 | $186K |
| 13 | 29821 | Clarks Hill | 73 | B | 0 | $251K |
| 14 | 29838 | Modoc | 73 | B | 0 | $354K |
| 15 | 29851 | Warrenville | 73 | B | 0 | $153K |
| 16 | 29801 | Aiken | 70 | B | 10 (8 health) | $164K |
| 17 | 29803 | Aiken | 70 | B | 10 (8 health) | $271K |
| 18 | 29137 | Salley | 68 | C | 2 | $124K |
| 19 | 29802 | Aiken | 66 | C | 10 (8 health) | — |
| 20 | 29804 | Aiken | 66 | C | 10 (8 health) | — |
| 21 | 29805 | Aiken | 66 | C | 10 (8 health) | $208K |
| 22 | 29808 | Aiken | 66 | C | 10 (8 health) | — |
| 23 | 29839 | Montmorenci | 66 | C | 0 | — |
| 24 | 29847 | Trenton | 66 | C | 0 | $179K |
| 25 | 29850 | Vaucluse | 66 | C | 0 | — |
| 26 | 29856 | Windsor | 66 | C | 0 | $153K |
Recommended Buyer Guides for Aiken County
Independent picks. EPA-grounded. Matched here.
- Best Lead Paint Test Kits — 50.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Aiken County, South Carolina
Overview
Aiken County in South Carolina covers 26 ZIP codes with an average Home Safety Score of B (81/100).
13 of 26 ZIP codes have recorded EPA violations. 50 health-based violations have been documented.
← Back to South Carolina water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.