Duval County, Texas
2 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-03
Spanning 2 ZIP codes, Duval County lands near the national median for water safety — compliance results are mixed, and the county's middle-grade standing reflects genuine variability rather than a single systemic problem.
How Duval County Compares
How Duval County Compares
Duval County scores 16 points below the Texas state average (82/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 14.3 (asthma 8.9%, diabetes 18.8%)
Estimated additional annual cost per homeowner: $4,120, driven primarily by sea_level
Infrastructure: 0.495% avg pipe failure probability, 100% of ZIPs at high risk
66% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Duval County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 14 violations. Past 5 years: 30 total (30 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $4,120
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,964 housing units in Duval 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 Duval County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Duval 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 Duval County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Duval County Crd Benavides | 2,285 | 52 |
| 2 | Duval County Crd Realitos | 200 | 52 |
| 3 | Duval County Crd Concepcion | 160 | 52 |
| 4 | Freer Wcid | 2,923 | 14 |
| 5 | San Diego Municipal Utility District 1 | 6,291 | 14 |
All ZIP Codes in Duval County
2 ZIP codes tracked in Duval County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 78341 | Benavides | 70 | B | 52 (37 health) | $87K |
| 2 | 78357 | Freer | 62 | C | 14 (11 health) | $115K |
Recommended Buyer Guides for Duval County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 66% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Overview
Duval County in Texas covers 2 ZIP codes with an average Home Safety Score of C (66/100).
2 of 2 ZIP codes have recorded EPA violations. 48 health-based violations have been documented.
← Back to Texas 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.