Beaufort County, South Carolina
20 ZIP codes · Avg score 82/100 · Grade B · Updated 2026-06-04
Tracking 20 ZIP codes in Beaufort County shows a water safety record well above the national median — violations are isolated exceptions, not recurring patterns.
How Beaufort County Compares
How Beaufort County Compares
Beaufort County scores 4 points above the South Carolina state average (78/100) and 14 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Beaufort 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: 12.8 (asthma 8.5%, diabetes 12.7%)
Estimated additional annual cost per homeowner: $4,828, driven primarily by sea_level
Infrastructure: 0.26% avg pipe failure probability
28% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Beaufort County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 19 violations. Past 5 years: 30 total (30 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: $4,828
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
102,580 housing units in Beaufort 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 Beaufort County
Remediation costs are relatively manageable for most homeowners in Beaufort 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 Beaufort 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 Beaufort County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Bjw&sa (0720003) | 145,634 | 10 |
| 2 | Beaufort Mhp (0760016) | 107 | 8 |
| 3 | Taylor Mh Estate (sc0760015) | 162 | 6 |
| 4 | Briarwood Mhp (sc0760076) | 44 | 6 |
| 5 | Water Oak Utility Company (sc0750002) | 2,318 | 3 |
15 total water systems serve Beaufort County.
All ZIP Codes in Beaufort County
20 ZIP codes tracked in Beaufort County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 29903 | Beaufort | 99 | A | 1 | — |
| 2 | 29904 | Beaufort | 99 | A | 1 | — |
| 3 | 29901 | Beaufort | 95 | A | 1 | — |
| 4 | 29905 | Beaufort | 95 | A | 1 | — |
| 5 | 29931 | Lobeco | 95 | A | 0 | — |
| 6 | 29925 | Hilton Head Island | 90 | A | 0 | — |
| 7 | 29938 | Hilton Head Island | 90 | A | 0 | — |
| 8 | 29945 | Yemassee | 90 | A | 0 | $113K |
| 9 | 29915 | Daufuskie Island | 89 | A | 2 (1 health) | — |
| 10 | 29906 | Beaufort | 85 | A | 1 | $237K |
| 11 | 29909 | Okatie | 84 | B | 1 (1 health) | $417K |
| 12 | 29940 | Seabrook | 84 | B | 3 | $118K |
| 13 | 29902 | Beaufort | 80 | B | 1 | $306K |
| 14 | 29926 | Hilton Head Island | 75 | B | 0 | $600K |
| 15 | 29928 | Hilton Head Island | 75 | B | 0 | $777K |
| 16 | 29935 | Port Royal | 73 | B | 0 | $252K |
| 17 | 29941 | Sheldon | 65 | C | 0 | $2000K |
| 18 | 29910 | Bluffton | 64 | C | 2 | $420K |
| 19 | 29907 | Ladys Island | 60 | C | 0 | $400K |
| 20 | 29920 | Saint Helena Island | 50 | D | 0 | $285K |
Recommended Buyer Guides for Beaufort County
Independent picks. EPA-grounded. Matched here.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for Beaufort County, South Carolina
Overview
Beaufort County in South Carolina covers 20 ZIP codes with an average Home Safety Score of B (82/100).
10 of 20 ZIP codes have recorded EPA violations. 2 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.