Nassau County, Florida
6 ZIP codes · Avg score 86/100 · Grade A · Updated 2026-06-03
Covering 6 ZIP codes, Nassau 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 Nassau County Compares
How Nassau County Compares
Nassau County scores 13 points above the Florida state average (73/100) and 18 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Nassau County, Florida
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.3 (asthma 9.6%, diabetes 11.6%)
Estimated additional annual cost per homeowner: $2,150, driven primarily by flood
Infrastructure: 0.235% avg pipe failure probability
29.3% 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: $2,150
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
40,592 housing units in Nassau 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 Nassau County
Remediation costs are relatively manageable for most homeowners in Nassau 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 Nassau 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 Nassau County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Green Acres of Yulee | 160 | 48 |
| 2 | Teakwood Mhp | 80 | 48 |
| 3 | Amelia Pines (aka Duck Pond) | 60 | 48 |
| 4 | Jea: Lofton Oaks Grid | 24,318 | 27 |
| 5 | Hilliard Wtp | 3,036 | 22 |
12 total water systems serve Nassau County.
All ZIP Codes in Nassau County
6 ZIP codes tracked in Nassau County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 32041 | Yulee | 94 | A | 24 (1 health) | — |
| 2 | 32035 | Fernandina Beach | 92 | A | 3 | — |
| 3 | 32097 | Yulee | 86 | A | 24 (1 health) | $293K |
| 4 | 32011 | Callahan | 85 | A | 0 | $235K |
| 5 | 32046 | Hilliard | 82 | B | 22 (2 health) | $215K |
| 6 | 32034 | Fernandina Beach | 77 | B | 3 | $484K |
Recommended Buyer Guides for Nassau County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- 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 Nassau County, Florida
Overview
Nassau County in Florida covers 6 ZIP codes with an average Home Safety Score of A (86/100).
5 of 6 ZIP codes have recorded EPA violations. 4 health-based violations have been documented.
← Back to Florida 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.