Clermont County, Ohio
15 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-03
The systems supplying Clermont County's 15 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How Clermont County Compares
How Clermont County Compares
Clermont County scores 6 points above the Ohio state average (60/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Clermont County, Ohio
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.5 (asthma 10.6%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $1,392, driven primarily by flood
Infrastructure: 0.375% avg pipe failure probability, 27% of ZIPs at high risk
61.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Clermont County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 3 violations. Past 5 years: 6 total (6 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: $1,392
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
68,136 housing units in Clermont 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 Clermont County
Remediation costs are relatively manageable for most homeowners in Clermont 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 Clermont 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 Clermont County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Clermont Public Water System | 133,059 | 19 |
| 2 | TATE-MONROE WATER ASSOCIATION PWS | 24,092 | 13 |
| 3 | Western Water Company | 39,508 | 11 |
| 4 | Indian Hill City Public Water System | 15,000 | 8 |
| 5 | Williamsburg Village Public Water System | 2,490 | 7 |
18 total water systems serve Clermont County.
All ZIP Codes in Clermont County
15 ZIP codes tracked in Clermont County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 45245 | Cincinnati | 83 | B | 1 | $260K |
| 2 | 45176 | Williamsburg | 82 | B | 2 (1 health) | $197K |
| 3 | 45120 | Felicity | 81 | B | 1 | $187K |
| 4 | 45106 | Bethel | 79 | B | 3 (1 health) | $203K |
| 5 | 45103 | Batavia | 77 | B | 2 | $243K |
| 6 | 45150 | Milford | 73 | B | 7 | $268K |
| 7 | 45102 | Amelia | 63 | C | 0 | $219K |
| 8 | 45122 | Goshen | 63 | C | 0 | $210K |
| 9 | 45147 | Miamiville | 63 | C | 0 | — |
| 10 | 45157 | New Richmond | 62 | C | 4 | $233K |
| 11 | 45112 | Chilo | 55 | C | 0 | — |
| 12 | 45156 | Neville | 55 | C | 0 | $77K |
| 13 | 45158 | Newtonsville | 53 | D | 0 | $219K |
| 14 | 45160 | Owensville | 53 | D | 0 | $140K |
| 15 | 45153 | Moscow | 50 | D | 0 | $241K |
Recommended Buyer Guides for Clermont County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 61.9% 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 Clermont County, Ohio
Overview
Clermont County in Ohio covers 15 ZIP codes with an average Home Safety Score of C (66/100).
7 of 15 ZIP codes have recorded EPA violations. 2 health-based violations 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.