Gonzales County, Texas
10 ZIP codes · Avg score 77/100 · Grade B · Updated 2026-06-03
Throughout Gonzales County, the 10 monitored ZIP codes show low violation rates and healthy safety scores — a pattern that puts the county well above the state baseline for drinking water quality.
How Gonzales County Compares
How Gonzales County Compares
Gonzales County scores 5 points below the Texas state average (82/100) and 9 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Gonzales County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 9.8%, diabetes 15.7%)
Estimated additional annual cost per homeowner: $2,419, driven primarily by sea_level
Infrastructure: 0.333% avg pipe failure probability, 22% of ZIPs at high risk
55.3% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Gonzales County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 7 violations. Past 5 years: 10 total (10 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: $2,419
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,646 housing units in Gonzales 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 Gonzales County
Remediation costs are relatively manageable for most homeowners in Gonzales 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 Gonzales 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 Gonzales County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | GONZALES COUNTY WSC | 10,350 | 17 |
| 2 | City of Georgetown | 191,639 | 12 |
| 3 | Patriot Rv Park Burnet | 90 | 12 |
| 4 | City of Gonzales | 9,172 | 9 |
| 5 | City of Waelder | 970 | 9 |
11 total water systems serve Gonzales County.
All ZIP Codes in Gonzales County
10 ZIP codes tracked in Gonzales County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 78159 | Smiley | 94 | A | 8 (1 health) | $74K |
| 2 | 78627 | Georgetown | 94 | A | 12 (1 health) | — |
| 3 | 78140 | Nixon | 87 | A | 0 | $84K |
| 4 | 78959 | Waelder | 83 | B | 5 | $215K |
| 5 | 78629 | Gonzales | 78 | B | 4 | $193K |
| 6 | 77994 | Westhoff | 66 | C | 0 | — |
| 7 | 78122 | Leesville | 66 | C | 0 | — |
| 8 | 78143 | Pandora | 66 | C | 0 | — |
| 9 | 78614 | Cost | 66 | C | 0 | $300K |
| 10 | 78677 | Wrightsboro | 66 | C | 0 | — |
Recommended Buyer Guides for Gonzales County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 55.3% of homes built before 1978
Deep Dive Reports
Detailed analysis for Gonzales County, Texas
Overview
Gonzales County in Texas covers 10 ZIP codes with an average Home Safety Score of B (77/100).
4 of 10 ZIP codes have recorded EPA violations. 2 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.