Durham County, North Carolina
16 ZIP codes · Avg score 90/100 · Grade A · Updated 2026-06-03
Recent water monitoring in Durham County shows 16 ZIP codes with consistently safe results.
How Durham County Compares
How Durham County Compares
Durham County scores 17 points above the North Carolina state average (73/100) and 22 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Durham County, North Carolina
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.5 (asthma 10.8%, diabetes 10.5%)
Estimated additional annual cost per homeowner: $1,031, driven primarily by flood
Infrastructure: 0.354% avg pipe failure probability, 6% of ZIPs at high risk
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Durham County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 2 violations. Past 5 years: 3 total (3 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: $1,031
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Durham County
Remediation costs are relatively manageable for most homeowners in Durham 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 Durham 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 Durham County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Durham, | 322,083 | 512 |
| 2 | Hardscrabble S/d | 643 | 512 |
| 3 | Greymoss S/d | 361 | 512 |
| 4 | Crown Mhp | 343 | 512 |
| 5 | Willow Hill S/d | 329 | 512 |
13 total water systems serve Durham County.
All ZIP Codes in Durham County
16 ZIP codes tracked in Durham County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 27702 | Durham | 95 | A | 32 (2 health) | — |
| 2 | 27708 | Durham | 95 | A | 32 (2 health) | — |
| 3 | 27709 | Durham | 95 | A | 32 (2 health) | — |
| 4 | 27710 | Durham | 95 | A | 32 (2 health) | — |
| 5 | 27711 | Durham | 95 | A | 32 (2 health) | — |
| 6 | 27717 | Durham | 95 | A | 32 (2 health) | — |
| 7 | 27722 | Durham | 95 | A | 32 (2 health) | — |
| 8 | 27706 | Durham | 92 | A | 32 (2 health) | — |
| 9 | 27715 | Durham | 92 | A | 32 (2 health) | — |
| 10 | 27701 | Durham | 87 | A | 32 (2 health) | $458K |
| 11 | 27703 | Durham | 87 | A | 32 (2 health) | $341K |
| 12 | 27713 | Durham | 87 | A | 32 (2 health) | $381K |
| 13 | 27704 | Durham | 82 | B | 32 (2 health) | $270K |
| 14 | 27705 | Durham | 82 | B | 32 (2 health) | $399K |
| 15 | 27707 | Durham | 82 | B | 32 (2 health) | $372K |
| 16 | 27712 | Durham | 82 | B | 32 (2 health) | $324K |
Recommended Buyer Guides for Durham County
Filtered against federal data, fitted to local risks.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Durham County, North Carolina
Overview
Durham County in North Carolina covers 16 ZIP codes with an average Home Safety Score of A (90/100).
16 of 16 ZIP codes have recorded EPA violations. 32 health-based violations have been documented.
← Back to North 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.