Gillespie County, Texas
4 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-06-03
For households in Gillespie County, the 4 ZIP codes on record show consistently safe tap water.
How Gillespie County Compares
How Gillespie County Compares
Gillespie County scores 6 points below the Texas state average (82/100) and 8 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 13.6 (asthma 9.4%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $1,583, driven primarily by wildfire
Infrastructure: 0.383% avg pipe failure probability, 50% of ZIPs at high risk
56.8% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Gillespie County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 9 violations. Past 5 years: 18 total (18 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: $1,583
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,737 housing units in Gillespie 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 Gillespie County
Remediation costs are relatively manageable for most homeowners in Gillespie 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 Gillespie 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 Gillespie County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Fredericksburg | 11,257 | 28 |
| 2 | Liveoaks Mobile Home Park | 357 | 28 |
| 3 | Bernhard Trailer Park | 60 | 28 |
| 4 | Royal Oaks Apartments | 57 | 28 |
| 5 | Silver Wings Fly in Ranch | 42 | 28 |
7 total water systems serve Gillespie County.
All ZIP Codes in Gillespie County
4 ZIP codes tracked in Gillespie County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 78671 | Stonewall | 98 | A | 2 (1 health) | — |
| 2 | 78675 | Willow City | 73 | B | 0 | $433K |
| 3 | 78635 | Hye | 66 | C | 0 | — |
| 4 | 78624 | Fredericksburg | 65 | C | 28 (17 health) | $440K |
Recommended Buyer Guides for Gillespie County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 56.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Overview
Gillespie County in Texas covers 4 ZIP codes with an average Home Safety Score of B (76/100).
2 of 4 ZIP codes have recorded EPA violations. 18 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.