Wyandot County, Ohio
10 ZIP codes · Avg score 49/100 · Grade D · Updated 2026-06-03
Drinking water quality in Wyandot County has lagged behind state benchmarks — multiple documented violations across 10 ZIP codes keep the county's grade low.
How Wyandot County Compares
How Wyandot County Compares
Wyandot County scores 11 points below the Ohio state average (60/100) and 19 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Wyandot County, Ohio
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 10.8%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $1,517, driven primarily by energy_code_gap
Infrastructure: 0.411% avg pipe failure probability, 50% of ZIPs at high risk
74.3% 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: $1,517
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,481 housing units in Wyandot 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 Wyandot County
Remediation costs are relatively manageable for most homeowners in Wyandot 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 Wyandot 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 Wyandot County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Forest Village | 1,652 | 3 |
| 2 | Carey Village Public Water System | 3,674 | 1 |
| 3 | Nevada Village Public Water System | 814 | 0 |
| 4 | UPPER SANDUSKY CITY | 6,698 | 0 |
| 5 | Findlay City | 54,040 | 0 |
7 total water systems serve Wyandot County.
All ZIP Codes in Wyandot County
10 ZIP codes tracked in Wyandot County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 44849 | Nevada | 66 | C | 0 | $125K |
| 2 | 43351 | Upper Sandusky | 62 | C | 0 | $167K |
| 3 | 45843 | Forest | 61 | C | 3 (1 health) | $151K |
| 4 | 43316 | Carey | 58 | C | 1 | $166K |
| 5 | 43323 | Harpster | 40 | D | 0 | $165K |
| 6 | 44802 | Alvada | 40 | D | 0 | $145K |
| 7 | 44844 | Mc Cutchenville | 40 | D | 0 | $129K |
| 8 | 44845 | Melmore | 40 | D | 0 | — |
| 9 | 44853 | New Riegel | 40 | D | 0 | $150K |
| 10 | 44860 | Oceola | 40 | D | 0 | — |
Recommended Buyer Guides for Wyandot County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 74.3% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Wyandot County, Ohio
Overview
Wyandot County in Ohio covers 10 ZIP codes with an average Home Safety Score of D (49/100).
2 of 10 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
Wyandot 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
74.3% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.