Gallia County, Ohio
7 ZIP codes · Avg score 65/100 · Grade C · Updated 2026-06-03
Compared to top-scoring counties, Gallia County's 7 ZIP codes land in the middle tier — some meet standards cleanly, others carry documented violations, and the gap between the best and worst areas is wider than average.
How Gallia County Compares
How Gallia County Compares
Gallia County scores 5 points above the Ohio state average (60/100) and 3 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Gallia County, Ohio
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.9 (asthma 11.5%, diabetes 15.3%)
Estimated additional annual cost per homeowner: $1,553, driven primarily by flood
Infrastructure: 0.332% avg pipe failure probability
54% of homes built before 1978 (lead paint era)
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: $1,553
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,274 housing units in Gallia 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 Gallia County
Remediation costs are relatively manageable for most homeowners in Gallia 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 Gallia 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 Gallia County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | RIO GRANDE | 830 | 4 |
| 2 | Gallipolis Public Water System | 7,134 | 0 |
| 3 | Gallia Company Rural Water Association | 20,995 | 0 |
| 4 | Oak Hill, Village of | 3,067 | 0 |
| 5 | LEADING CREEK CONSERVANCY DISTRICT | 6,663 | 0 |
All ZIP Codes in Gallia County
7 ZIP codes tracked in Gallia County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 45674 | Rio Grande | 80 | B | 4 | $184K |
| 2 | 45631 | Gallipolis | 73 | B | 0 | $139K |
| 3 | 45643 | Kerr | 63 | C | 0 | — |
| 4 | 45658 | Patriot | 63 | C | 0 | $117K |
| 5 | 45685 | Thurman | 63 | C | 0 | $131K |
| 6 | 45614 | Bidwell | 55 | C | 0 | $122K |
| 7 | 45686 | Vinton | 55 | C | 0 | $157K |
Recommended Buyer Guides for Gallia County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 54% of homes built before 1978
- 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 Gallia County, Ohio
Overview
Gallia County in Ohio covers 7 ZIP codes with an average Home Safety Score of C (65/100).
1 of 7 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Ohio 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.