San Jacinto County, Texas
8 ZIP codes · Avg score 73/100 · Grade B · Updated 2026-06-03
Water utilities serving San Jacinto County's 8 ZIP codes have built a consistent compliance record — the county's above-average grade reflects years of data showing low violation rates and no systemic health concerns.
How San Jacinto County Compares
How San Jacinto County Compares
San Jacinto 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: San Jacinto County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.2 (asthma 10.6%, diabetes 15.8%)
Estimated additional annual cost per homeowner: $2,596, driven primarily by flood
Infrastructure: 0.369% avg pipe failure probability, 29% of ZIPs at high risk
60.1% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across San Jacinto County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 22 violations. Past 5 years: 60 total (60 health-based). Health-based violations are declining versus the prior 2-year window.
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: $2,596
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
16,857 housing units in San Jacinto 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 San Jacinto County
Remediation costs are relatively manageable for most homeowners in San Jacinto 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 San Jacinto 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 San Jacinto County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Dodge Oakhurst Water Supply Corporation 2 | 2,500 | 32 |
| 2 | Riverside Special Utility District | 6,492 | 32 |
| 3 | PB & SC WATER SUPPLY CORPORATION | 2,163 | 28 |
| 4 | Mercy Water Supply Corporation | 2,458 | 18 |
| 5 | One Five O Water Supply Corporation | 3,094 | 18 |
20 total water systems serve San Jacinto County.
All ZIP Codes in San Jacinto County
8 ZIP codes tracked in San Jacinto County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 77334 | Dodge | 93 | A | 6 (2 health) | — |
| 2 | 77328 | Cleveland | 81 | B | 6 | $169K |
| 3 | 77371 | Shepherd | 80 | B | 10 (2 health) | $155K |
| 4 | 77331 | Coldspring | 79 | B | 2 | $226K |
| 5 | 77359 | Oakhurst | 66 | C | 0 | $190K |
| 6 | 77369 | Rye | 65 | C | 0 | $73K |
| 7 | 77368 | Romayor | 60 | C | 0 | — |
| 8 | 77364 | Pointblank | 57 | C | 26 (14 health) | $185K |
Recommended Buyer Guides for San Jacinto 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 — 60.1% of homes built before 1978
- 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 San Jacinto County, Texas
Overview
San Jacinto County in Texas covers 8 ZIP codes with an average Home Safety Score of B (73/100).
5 of 8 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.