Carroll County, Ohio
8 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-03
Unlike top-rated counties, Carroll County's 8 ZIP codes carry a fair number of documented violations — chlorine compliance and disinfection byproduct limits are the categories most often cited in recent data.
How Carroll County Compares
How Carroll County Compares
Carroll County scores 4 points below the Ohio state average (60/100) and 12 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Carroll County, Ohio
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.8 (asthma 11.2%, diabetes 14.9%)
Estimated additional annual cost per homeowner: $1,639, driven primarily by energy_code_gap
Infrastructure: 0.395% avg pipe failure probability, 38% of ZIPs at high risk
69.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Carroll County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 6 violations. Past 5 years: 13 total (13 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $1,639
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
15,913 housing units in Carroll 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 Carroll County
Remediation costs are relatively manageable for most homeowners in Carroll 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 Carroll 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 Carroll County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Aqua Ohio - Mohawk Public Water System | 2,376 | 10 |
| 2 | Malvern Village Public Water System | 1,200 | 10 |
| 3 | MINERVA VILLAGE PWS | 4,000 | 7 |
| 4 | Pride Valley Mhp | 100 | 7 |
| 5 | CARROLLTON VILLAGE | 3,055 | 3 |
11 total water systems serve Carroll County.
All ZIP Codes in Carroll County
8 ZIP codes tracked in Carroll County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 44643 | Magnolia | 70 | B | 0 | $164K |
| 2 | 44657 | Minerva | 65 | C | 0 | $157K |
| 3 | 44695 | Bowerston | 61 | C | 2 | $183K |
| 4 | 44615 | Carrollton | 60 | C | 3 | $177K |
| 5 | 44644 | Malvern | 57 | C | 7 (2 health) | $185K |
| 6 | 44620 | Dellroy | 53 | D | 0 | $198K |
| 7 | 43908 | Bergholz | 40 | D | 0 | $87K |
| 8 | 44651 | Mechanicstown | 40 | D | 0 | $181K |
Recommended Buyer Guides for Carroll County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 69.9% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Carroll County, Ohio
Overview
Carroll County in Ohio covers 8 ZIP codes with an average Home Safety Score of C (56/100).
3 of 8 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.