Shelby County, Texas
5 ZIP codes · Avg score 73/100 · Grade B · Updated 2026-06-03
For households in Shelby County, the 5 ZIP codes on record show consistently safe tap water.
How Shelby County Compares
How Shelby County Compares
Shelby County scores 9 points below the Texas state average (82/100) and 5 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Shelby County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.7 (asthma 11%, diabetes 16.4%)
Estimated additional annual cost per homeowner: $870, driven primarily by wildfire
Infrastructure: 0.434% avg pipe failure probability, 80% of ZIPs at high risk
54.8% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Shelby County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 39 violations. Past 5 years: 75 total (75 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: $870
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,709 housing units in Shelby 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 Shelby County
Remediation costs are relatively manageable for most homeowners in Shelby 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 Shelby 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 Shelby County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Tennessee Water Supply Corporation | 371 | 106 |
| 2 | City of Joaquin | 1,620 | 70 |
| 3 | Paxton Water Supply Corporation | 908 | 70 |
| 4 | City of Tenaha | 1,746 | 70 |
| 5 | Paxton Water Supply Corporation Jackson Plant | 827 | 56 |
23 total water systems serve Shelby County.
All ZIP Codes in Shelby County
5 ZIP codes tracked in Shelby County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 75935 | Center | 95 | A | 0 | $118K |
| 2 | 75974 | Tenaha | 70 | B | 14 (3 health) | $94K |
| 3 | 75975 | Timpson | 70 | B | 36 (24 health) | $108K |
| 4 | 75954 | Joaquin | 66 | C | 56 (17 health) | $87K |
| 5 | 75973 | Shelbyville | 66 | C | 28 (19 health) | $136K |
Recommended Buyer Guides for Shelby County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 54.8% 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
Deep Dive Reports
Detailed analysis for Shelby County, Texas
Overview
Shelby County in Texas covers 5 ZIP codes with an average Home Safety Score of B (73/100).
4 of 5 ZIP codes have recorded EPA violations. 63 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.