Lake County, Ohio
4 ZIP codes · Avg score 71/100 · Grade B · Updated 2026-06-03
Lake County earns a high water safety grade — 4 ZIP codes tracked, virtually all compliant.
How Lake County Compares
How Lake County Compares
Lake County scores 11 points above the Ohio state average (60/100) and 3 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 13.9 (asthma 10.7%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $1,858, driven primarily by flood
Infrastructure: 0.32% avg pipe failure probability
62.7% 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: $1,858
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
54,374 housing units in Lake 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 Lake County
Remediation costs are relatively manageable for most homeowners in Lake 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 Lake 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 Lake County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Aqua Ohio - Mentor | 74,500 | 3 |
| 2 | Painesville City Public Water System | 31,728 | 3 |
| 3 | Aqua Ohio - Seneca | 750 | 2 |
| 4 | Aqua Ohio - Shepard Hills Public Water System | 725 | 2 |
| 5 | Aqua Ohio - Auburn Lakes Public Water System | 658 | 2 |
8 total water systems serve Lake County.
All ZIP Codes in Lake County
4 ZIP codes tracked in Lake County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 44061 | Mentor | 81 | B | 1 | — |
| 2 | 44060 | Mentor | 71 | B | 1 | $227K |
| 3 | 44077 | Painesville | 68 | C | 1 | $217K |
| 4 | 44081 | Perry | 63 | C | 0 | $239K |
Recommended Buyer Guides for Lake County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 62.7% 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
Overview
Lake County in Ohio covers 4 ZIP codes with an average Home Safety Score of B (71/100).
3 of 4 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.