Gregg County, Texas
14 ZIP codes · Avg score 88/100 · Grade A · Updated 2026-06-03
Gregg County earns a high water safety grade — 14 ZIP codes tracked, virtually all compliant.
How Gregg County Compares
How Gregg County Compares
Gregg County scores 6 points above the Texas state average (82/100) and 20 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Gregg County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.6 (asthma 10.7%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $1,085, driven primarily by flood
Infrastructure: 0.363% avg pipe failure probability, 31% of ZIPs at high risk
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Gregg County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 59 violations. Past 5 years: 94 total (94 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: $1,085
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Gregg County
Remediation costs are relatively manageable for most homeowners in Gregg 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 Gregg 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 Gregg County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Liberty City Water Supply Corporation | 6,450 | 80 |
| 2 | West Gregg Special Utility District | 5,127 | 80 |
| 3 | Starrville Water Supply Corporation | 1,077 | 65 |
| 4 | City of White Oak | 6,469 | 62 |
| 5 | City of Gladewater | 6,441 | 61 |
32 total water systems serve Gregg County.
All ZIP Codes in Gregg County
14 ZIP codes tracked in Gregg County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 75607 | Longview | 99 | A | 1 | — |
| 2 | 75608 | Longview | 99 | A | 1 | — |
| 3 | 75615 | Longview | 99 | A | 1 | — |
| 4 | 75606 | Longview | 95 | A | 1 | — |
| 5 | 75663 | Kilgore | 93 | A | 14 (2 health) | — |
| 6 | 75601 | Longview | 90 | A | 1 | $194K |
| 7 | 75602 | Longview | 90 | A | 1 | $123K |
| 8 | 75603 | Longview | 90 | A | 1 | $175K |
| 9 | 75604 | Longview | 90 | A | 1 | $190K |
| 10 | 75605 | Longview | 85 | A | 1 | $239K |
| 11 | 75662 | Kilgore | 80 | B | 14 (2 health) | $166K |
| 12 | 75693 | White Oak | 80 | B | 9 | $209K |
| 13 | 75647 | Gladewater | 69 | C | 51 (16 health) | $164K |
| 14 | 75660 | Judson | 66 | C | 0 | — |
Recommended Buyer Guides for Gregg County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- 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 Gregg County, Texas
Overview
Gregg County in Texas covers 14 ZIP codes with an average Home Safety Score of A (88/100).
13 of 14 ZIP codes have recorded EPA violations. 20 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.