Grayson County, Kentucky
7 ZIP codes · Avg score 64/100 · Grade C · Updated 2026-06-03
While Grayson County avoids the worst tiers, a portion of its 7 ZIP codes have logged violations.
How Grayson County Compares
How Grayson County Compares
Grayson County scores 3 points above the Kentucky state average (61/100) and 4 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Grayson 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: $473, driven primarily by energy_code_gap
Infrastructure: 0.299% avg pipe failure probability
52.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Grayson County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 18 violations. Past 5 years: 37 total (37 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $473
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
15,044 housing units in Grayson 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 Grayson County
Remediation costs are relatively manageable for most homeowners in Grayson 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 Grayson County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | GRAYSON COUNTY WATER DISTRICT | 20,033 | 2 |
| 2 | Leitchfield Water Works | 8,438 | 2 |
| 3 | HARDINSBURG RO WTP | 18,437 | 1 |
| 4 | EDMONSON CO WATER DISTRICT | 17,848 | 1 |
| 5 | OHIO COUNTY WATER DISTRICT | 16,511 | 0 |
8 total water systems serve Grayson County.
All ZIP Codes in Grayson County
7 ZIP codes tracked in Grayson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 42754 | Leitchfield | 81 | B | 1 | $166K |
| 2 | 42755 | Leitchfield | 81 | B | 1 | — |
| 3 | 42721 | Caneyville | 63 | C | 0 | $125K |
| 4 | 42726 | Clarkson | 63 | C | 0 | $193K |
| 5 | 40119 | Falls Of Rough | 53 | D | 0 | $155K |
| 6 | 42712 | Big Clifty | 53 | D | 0 | $146K |
| 7 | 42762 | Millwood | 53 | D | 0 | $117K |
Recommended Buyer Guides for Grayson County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 52.5% of homes built before 1978
Deep Dive Reports
Detailed analysis for Grayson County, Kentucky
Overview
Grayson County in Kentucky covers 7 ZIP codes with an average Home Safety Score of C (64/100).
2 of 7 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.