Jessamine County, Kentucky
3 ZIP codes · Avg score 52/100 · Grade D · Updated 2026-06-03
Jessamine County's water safety record falls below average — health-based violations are on file in a notable share of the county's 3 ZIP codes, and several systems have recorded exceedances that trigger federal notification requirements.
How Jessamine County Compares
How Jessamine County Compares
Jessamine County scores 9 points below the Kentucky state average (61/100) and 16 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Estimated additional annual cost per homeowner: $1,163, driven primarily by flood
Infrastructure: 0.34% avg pipe failure probability
40.5% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Jessamine County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 6 violations. Past 5 years: 8 total (8 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: $1,163
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,372 housing units in Jessamine 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 Jessamine County
Remediation costs are relatively manageable for most homeowners in Jessamine 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 Jessamine County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Nicholasville Water Department | 35,266 | 5 |
| 2 | Jessamine S Elkhorn Water District | 8,826 | 5 |
| 3 | Jessamine Company Water District #1 | 6,831 | 4 |
| 4 | Wilmore Water Works | 5,762 | 3 |
| 5 | KENTUCKY-AMERICAN WATER CO | 299,501 | 2 |
All ZIP Codes in Jessamine County
3 ZIP codes tracked in Jessamine County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 40390 | Wilmore | 59 | C | 1 (1 health) | $219K |
| 2 | 40340 | Nicholasville | 50 | D | 2 (2 health) | — |
| 3 | 40356 | Nicholasville | 47 | D | 2 (2 health) | $246K |
Recommended Buyer Guides for Jessamine County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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
Overview
Jessamine County in Kentucky covers 3 ZIP codes with an average Home Safety Score of D (52/100).
3 of 3 ZIP codes have recorded EPA violations. 5 health-based violations 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.
What You Can Do
Jessamine 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
40.5% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.