Coke County, Texas
6 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-06-03
Coke County's tap water quality puts it in the upper tier nationally; the 6 ZIP codes here record few health-based violations.
How Coke County Compares
How Coke County Compares
Coke 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: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Coke County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.1 (asthma 10%, diabetes 15.8%)
Estimated additional annual cost per homeowner: $712, driven primarily by wildfire
Infrastructure: 0.382% avg pipe failure probability, 40% of ZIPs at high risk
66% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Coke County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 23 violations. Past 5 years: 31 total (31 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: $712
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,065 housing units in Coke 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 Coke County
Remediation costs are relatively manageable for most homeowners in Coke 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 Coke 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 Coke County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | MILLERSVIEW DOOLE WSC | 3,987 | 29 |
| 2 | Coke County Water Supply Corporation | 410 | 29 |
| 3 | City of Robert Lee | 1,025 | 29 |
| 4 | CITY OF BRONTE | 999 | 0 |
| 5 | NOLAN COUNTY FWSD 1 | 258 | 0 |
All ZIP Codes in Coke County
6 ZIP codes tracked in Coke County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 76933 | Bronte | 88 | A | 0 | $153K |
| 2 | 76865 | Norton | 66 | C | 0 | $107K |
| 3 | 76945 | Robert Lee | 66 | C | 29 (16 health) | $63K |
| 4 | 76949 | Silver | 66 | C | 0 | — |
| 5 | 76953 | Tennyson | 66 | C | 0 | — |
| 6 | 79535 | Maryneal | 66 | C | 0 | $92K |
Recommended Buyer Guides for Coke County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Lead Paint Test Kits — 66% 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
Deep Dive Reports
Detailed analysis for Coke County, Texas
Overview
Coke County in Texas covers 6 ZIP codes with an average Home Safety Score of B (70/100).
1 of 6 ZIP codes have recorded EPA violations. 16 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.