Fairfield County, Ohio
15 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
Although much of Fairfield County meets baseline standards, some of its 15 ZIP codes show violations that merit closer attention.
How Fairfield County Compares
How Fairfield County Compares
Fairfield County scores 3 points below the Ohio state average (60/100) and 11 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Fairfield 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 10.9%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $1,253, driven primarily by flood
Infrastructure: 0.363% avg pipe failure probability, 27% of ZIPs at high risk
60.3% 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: $1,253
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
58,720 housing units in Fairfield 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 Fairfield County
Remediation costs are relatively manageable for most homeowners in Fairfield 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 Fairfield 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 Fairfield County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Bremen Village | 1,425 | 11 |
| 2 | Lithopolis Village Public Water System | 1,573 | 9 |
| 3 | Thurston Village Public Water System | 604 | 8 |
| 4 | Country Lane Gardens Hc | 190 | 6 |
| 5 | Carroll Village Public Water System | 524 | 5 |
25 total water systems serve Fairfield County.
All ZIP Codes in Fairfield County
15 ZIP codes tracked in Fairfield County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 43155 | Sugar Grove | 70 | B | 0 | $234K |
| 2 | 43150 | Rushville | 69 | C | 5 (1 health) | $283K |
| 3 | 43136 | Lithopolis | 65 | C | 9 (1 health) | $303K |
| 4 | 43147 | Pickerington | 65 | C | 0 | $316K |
| 5 | 43102 | Amanda | 64 | C | 1 | $240K |
| 6 | 43112 | Carroll | 62 | C | 0 | $338K |
| 7 | 43157 | Thurston | 61 | C | 8 | $145K |
| 8 | 43046 | Millersport | 58 | C | 1 | $282K |
| 9 | 43130 | Lancaster | 58 | C | 2 | $216K |
| 10 | 43148 | Pleasantville | 55 | C | 1 | $236K |
| 11 | 43154 | Stoutsville | 53 | D | 0 | $229K |
| 12 | 43107 | Bremen | 47 | D | 4 | $229K |
| 13 | 43149 | Rockbridge | 45 | D | 0 | $227K |
| 14 | 43105 | Baltimore | 42 | D | 3 | $311K |
| 15 | 43156 | Tarlton | 40 | D | 0 | $113K |
Recommended Buyer Guides for Fairfield County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 60.3% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Fairfield County, Ohio
Overview
Fairfield County in Ohio covers 15 ZIP codes with an average Home Safety Score of C (57/100).
9 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.