Ohio County, Kentucky
9 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Ohio County shows moderate water quality across its 9 ZIP codes — some areas carry violations worth monitoring.
How Ohio County Compares
How Ohio County Compares
Ohio County scores 1 points below the Kentucky state average (61/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Ohio County, Kentucky
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $696, driven primarily by energy_code_gap
Infrastructure: 0.34% avg pipe failure probability, 11% of ZIPs at high risk
63.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Ohio County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 9 violations. Past 5 years: 17 total (17 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $696
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,562 housing units in Ohio 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 Ohio County
Remediation costs are relatively manageable for most homeowners in Ohio 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.
Water Systems with Most Violations
Top 5 systems in Ohio County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | OHIO COUNTY WATER DISTRICT | 16,511 | 2 |
| 2 | FORDSVILLE WATER DISTRICT | 927 | 2 |
| 3 | WHITESVILLE WATER WORKS | 3,672 | 2 |
| 4 | Hartford Municipal Water Works | 3,119 | 1 |
| 5 | Butler County Water System Inc. | 14,256 | 0 |
6 total water systems serve Ohio County.
All ZIP Codes in Ohio County
9 ZIP codes tracked in Ohio County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 42347 | Hartford | 82 | B | 1 (1 health) | $124K |
| 2 | 42343 | Fordsville | 71 | B | 1 (1 health) | $89K |
| 3 | 42320 | Beaver Dam | 63 | C | 0 | $115K |
| 4 | 42354 | Mc Henry | 63 | C | 0 | $75K |
| 5 | 42328 | Centertown | 53 | D | 0 | $91K |
| 6 | 42338 | Dundee | 53 | D | 0 | — |
| 7 | 42349 | Horse Branch | 53 | D | 0 | $104K |
| 8 | 42361 | Olaton | 53 | D | 0 | $106K |
| 9 | 42370 | Rosine | 53 | D | 0 | — |
Recommended Buyer Guides for Ohio County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Lead Paint Test Kits — 63.9% of homes built before 1978
Deep Dive Reports
Detailed analysis for Ohio County, Kentucky
Overview
Ohio County in Kentucky covers 9 ZIP codes with an average Home Safety Score of C (60/100).
2 of 9 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Kentucky 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.