Willacy County, Texas
5 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-07-16
ZipCheckup grade for Willacy: B.
This ZIP looks solid, with a few items worth a quick check.
Within Willacy County's 5 tracked ZIP codes, safety indicators remain above the national average with few health-based violations on record.
How Willacy County Compares
How Willacy County Compares
Willacy County scores 12 points below the Texas state average (82/100) and 2 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-16
ZIP Code Risk Map
Water Quality Map: Willacy County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.3 (asthma 8.9%, diabetes 18.8%)
Estimated additional annual cost per homeowner: $3,552, driven primarily by flood
Infrastructure: 0.396% avg pipe failure probability, 60% of ZIPs at high risk
55.2% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Willacy County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 12 violations. Past 5 years: 21 total (21 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: $3,552
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,578 housing units in Willacy 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 Willacy 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 Willacy County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Willacy County
8 community water systems serving Willacy County.
- B
- B
- C
- B
- B
- C
Show all 8 water systems
- B
- C
Systems with the most violations in Willacy County
3 water systems with recorded EPA violations.
- C
- B
- C
All ZIP Codes in Willacy County
5 ZIP codes tracked in Willacy County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 78594 | Sebastian | 78 | B | 6 (1 health) | $38K |
| 2 | 78569 | Lyford | 75 | B | 5 | $103K |
| 3 | 78561 | Lasara | 66 | C | 0 | $55K |
| 4 | 78580 | Raymondville | 66 | C | 17 (5 health) | $56K |
| 5 | 78590 | San Perlita | 65 | C | 0 | $55K |
Recommended Buyer Guides for Willacy County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 55.2% of homes built before 1978
- 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 Willacy County, Texas
Overview
Willacy County in Texas covers 5 ZIP codes with an average Home Safety Score of B (70/100).
3 of 5 ZIP codes have recorded EPA violations. 6 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.