Grant County, Kentucky
9 ZIP codes · Avg score 65/100 · Grade C · Updated 2026-06-03
Current EPA records place Grant County in the middle tier for drinking water safety, with 9 ZIP codes showing a range of outcomes.
How Grant County Compares
How Grant County Compares
Grant County scores 4 points above the Kentucky state average (61/100) and 3 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Grant 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: $564, driven primarily by energy_code_gap
Infrastructure: 0.303% avg pipe failure probability
45.4% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Grant County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 4 violations. Past 5 years: 7 total (7 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: $564
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
17,876 housing units in Grant 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 Grant County
Remediation costs are relatively manageable for most homeowners in Grant 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 Grant County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | KENTUCKY-AMERICAN WATER CO | 299,501 | 2 |
| 2 | CORINTH WATER DISTRICT | 3,139 | 2 |
| 3 | Bullock Pen Water District | 20,048 | 2 |
| 4 | Williamstown Municipal Water Department | 5,495 | 2 |
| 5 | HARRISON CO WATER ASSOC | 16,736 | 1 |
13 total water systems serve Grant County.
All ZIP Codes in Grant County
9 ZIP codes tracked in Grant County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 41030 | Crittenden | 83 | B | 0 | $242K |
| 2 | 41035 | Dry Ridge | 82 | B | 1 (1 health) | $185K |
| 3 | 41010 | Corinth | 72 | B | 1 | $177K |
| 4 | 40370 | Sadieville | 63 | C | 0 | $274K |
| 5 | 41033 | De Mossville | 63 | C | 0 | $220K |
| 6 | 41063 | Morning View | 63 | C | 0 | $224K |
| 7 | 41054 | Mason | 53 | D | 0 | — |
| 8 | 41097 | Williamstown | 53 | D | 0 | $166K |
| 9 | 40359 | Owenton | 50 | D | 0 | $164K |
Recommended Buyer Guides for Grant County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for Grant County, Kentucky
Overview
Grant County in Kentucky covers 9 ZIP codes with an average Home Safety Score of C (65/100).
2 of 9 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← 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.