Franklin County, Kentucky
9 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-03
Franklin County's water quality grade reflects a middle-ground assessment — its 9 ZIP codes range from fully compliant to violation-flagged.
How Franklin County Compares
How Franklin County Compares
Franklin County scores 1 points above the Kentucky state average (61/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Franklin County, Kentucky
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $543, driven primarily by flood
Infrastructure: 0.323% avg pipe failure probability, 11% of ZIPs at high risk
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: $543
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Franklin County
Remediation costs are relatively manageable for most homeowners in Franklin 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.
Water Systems with Most Violations
Top 5 systems in Franklin County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Frankfort Plant Board | 52,153 | 45 |
| 2 | Farmdale Water District | 8,203 | 45 |
| 3 | Elkhorn Water District | 1,590 | 45 |
| 4 | So Woodford Company Water District | 4,218 | 45 |
| 5 | KENTUCKY-AMERICAN WATER CO | 299,501 | 5 |
9 total water systems serve Franklin County.
All ZIP Codes in Franklin County
9 ZIP codes tracked in Franklin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 40603 | Frankfort | 64 | C | 5 | — |
| 2 | 40604 | Frankfort | 64 | C | 5 | — |
| 3 | 40618 | Frankfort | 64 | C | 5 | — |
| 4 | 40619 | Frankfort | 64 | C | 5 | — |
| 5 | 40620 | Frankfort | 64 | C | 5 | — |
| 6 | 40621 | Frankfort | 64 | C | 5 | — |
| 7 | 40622 | Frankfort | 64 | C | 5 | — |
| 8 | 40602 | Frankfort | 63 | C | 5 | — |
| 9 | 40601 | Frankfort | 48 | D | 5 | $200K |
Recommended Buyer Guides for Franklin 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 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 Franklin County, Kentucky
Overview
Franklin County in Kentucky covers 9 ZIP codes with an average Home Safety Score of C (62/100).
9 of 9 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Kentucky 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.