Clinton County, Ohio
11 ZIP codes · Avg score 52/100 · Grade D · Updated 2026-06-03
For households across Clinton County's 11 ZIP codes, below-average water safety data and recurring health violations make local monitoring worthwhile — checking the specific system serving an address is the most actionable starting point.
How Clinton County Compares
How Clinton County Compares
Clinton County scores 8 points below the Ohio state average (60/100) and 16 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Clinton County, Ohio
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.7 (asthma 11.2%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $784, driven primarily by energy_code_gap
Infrastructure: 0.373% avg pipe failure probability, 40% of ZIPs at high risk
64.1% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Clinton County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 3 violations. Past 5 years: 4 total (4 health-based).
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: $784
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
22,760 housing units in Clinton 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 Clinton County
Remediation costs are relatively manageable for most homeowners in Clinton 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 Clinton 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 Clinton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Western Water Company | 39,508 | 5 |
| 2 | SABINA VILLAGE PWS | 2,493 | 4 |
| 3 | CLARKSVILLE VILLAGE PWS | 562 | 1 |
| 4 | Wilmington City Public Water System | 12,401 | 1 |
| 5 | NEW VIENNA VILLAGE | 1,240 | 1 |
12 total water systems serve Clinton County.
All ZIP Codes in Clinton County
11 ZIP codes tracked in Clinton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 45177 | Wilmington | 70 | B | 1 | $209K |
| 2 | 45169 | Sabina | 69 | C | 4 (1 health) | $118K |
| 3 | 45113 | Clarksville | 66 | C | 0 | $282K |
| 4 | 45159 | New Vienna | 64 | C | 1 | $156K |
| 5 | 45107 | Blanchester | 53 | D | 0 | $196K |
| 6 | 45146 | Martinsville | 53 | D | 0 | $172K |
| 7 | 45054 | Oregonia | 40 | D | 0 | $298K |
| 8 | 45114 | Cuba | 40 | D | 0 | — |
| 9 | 45132 | Highland | 40 | D | 0 | $99K |
| 10 | 45135 | Leesburg | 40 | D | 0 | $181K |
| 11 | 45166 | Reesville | 40 | D | 0 | — |
Recommended Buyer Guides for Clinton County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 64.1% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Clinton County, Ohio
Overview
Clinton County in Ohio covers 11 ZIP codes with an average Home Safety Score of D (52/100).
3 of 11 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← 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.
What You Can Do
Clinton County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
64.1% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.