Matagorda County, Texas
12 ZIP codes · Avg score 75/100 · Grade B · Updated 2026-06-03
Compared to state averages, Matagorda County scores well — its 12 ZIP codes sit above the baseline for tap water quality.
How Matagorda County Compares
How Matagorda County Compares
Matagorda County scores 7 points below the Texas state average (82/100) and 7 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Matagorda County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 9.9%, diabetes 16.3%)
Estimated additional annual cost per homeowner: $4,900, driven primarily by sea_level
Infrastructure: 0.363% avg pipe failure probability, 17% of ZIPs at high risk
65.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Matagorda County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 18 violations. Past 5 years: 41 total (41 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: $4,900
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,155 housing units in Matagorda 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 Matagorda County
Remediation costs are relatively manageable for most homeowners in Matagorda 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 Matagorda 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 Matagorda County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Bay City | 18,061 | 80 |
| 2 | River Oaks Water Supply Corporation | 382 | 76 |
| 3 | Frost Mobile Home Park | 84 | 76 |
| 4 | CITY OF PALACIOS | 4,700 | 41 |
| 5 | Wadsworth Water Supply Corporation | 570 | 38 |
13 total water systems serve Matagorda County.
All ZIP Codes in Matagorda County
12 ZIP codes tracked in Matagorda County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 77458 | Midfield | 94 | A | 3 | — |
| 2 | 77419 | Blessing | 82 | B | 0 | $147K |
| 3 | 77456 | Markham | 82 | B | 0 | $119K |
| 4 | 77483 | Wadsworth | 82 | B | 0 | $206K |
| 5 | 77465 | Palacios | 79 | B | 3 (1 health) | $171K |
| 6 | 77404 | Bay City | 76 | B | 38 (8 health) | — |
| 7 | 77482 | Van Vleck | 76 | B | 4 (1 health) | $148K |
| 8 | 77432 | Danevang | 73 | B | 0 | — |
| 9 | 77440 | Elmaton | 73 | B | 0 | — |
| 10 | 77961 | Francitas | 66 | C | 0 | — |
| 11 | 77414 | Bay City | 61 | C | 38 (8 health) | $166K |
| 12 | 77457 | Matagorda | 55 | C | 20 (18 health) | $272K |
Recommended Buyer Guides for Matagorda County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 65.9% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Matagorda County, Texas
Overview
Matagorda County in Texas covers 12 ZIP codes with an average Home Safety Score of B (75/100).
6 of 12 ZIP codes have recorded EPA violations. 36 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.