Darlington County, South Carolina
7 ZIP codes · Avg score 86/100 · Grade A · Updated 2026-07-19
ZipCheckup grade for Darlington: A.
No federal data flags a major home-safety concern for this ZIP.
Covering 7 ZIP codes, Darlington County earns a high grade for tap water - most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How Darlington County Compares
How Darlington County Compares
Darlington County scores 8 points above the South Carolina state average (78/100) and 18 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Darlington 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: 16 (asthma 10.7%, diabetes 17.6%)
Estimated additional annual cost per homeowner: $3,923, driven primarily by sea_level
Infrastructure: 0.326% avg pipe failure probability, 29% of ZIPs at high risk
61% of homes built before 1978 (lead paint era)
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: $3,923
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
28,452 housing units in Darlington 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 Darlington County
Remediation costs are relatively manageable for most homeowners in Darlington 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 Darlington County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Darlington County
4 community water systems serving Darlington County.
- C
- A
- A
- A
Systems with the most violations in Darlington County
3 water systems with recorded EPA violations.
- C
- A
- A
All ZIP Codes in Darlington County
7 ZIP codes tracked in Darlington County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 29551 | Hartsville | 99 | A | 1 | — |
| 2 | 29069 | Lamar | 95 | A | 1 | $113K |
| 3 | 29540 | Darlington | 94 | A | 3 | $67K |
| 4 | 29550 | Hartsville | 90 | A | 1 | $169K |
| 5 | 29532 | Darlington | 89 | A | 3 | $120K |
| 6 | 29079 | Lydia | 66 | C | 0 | — |
| 7 | 29593 | Society Hill | 66 | C | 0 | $74K |
Recommended Buyer Guides for Darlington County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 61% of homes built before 1978
Deep Dive Reports
Detailed analysis for Darlington County, South Carolina
Overview
Darlington County in South Carolina covers 7 ZIP codes with an average Home Safety Score of A (86/100).
5 of 7 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← 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.