Shepherdsville, KY: High Radon Risk — 38/100 (2026)
2 ZIP codes · 3 water systems · Updated 2026-06-03
Unlike better-scoring cities in KY, Shepherdsville records health-based violations across a meaningful portion of its service areas — the overall safety grade is well below average.
How Shepherdsville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Who Supplies Your Water in Shepherdsville
3 water utilities share the residential service territory in Shepherdsville, KY — out of 3 total systems in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Shepherdsville, Kentucky (population ~38,533), covering 3 community water systems serving approximately 781,000 people region-wide.
No EPA violations recorded across any ZIP codes in Shepherdsville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Shepherdsville: F (38/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Shepherdsville water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Shepherdsville
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 40165 | F | LOUISVILLE WATER COMPANY | 764,769 |
| 40166 | D | LOUISVILLE WATER COMPANY | 764,769 |
All ZIP Codes in Shepherdsville
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Cost Context: What Remediation Means for Shepherdsville Homeowners
Placing remediation in the context of Shepherdsville's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in Shepherdsville are relatively low compared to home values. The $1,400–$2,800 estimated range is a small fraction of median property value. Home values are 63% above the Kentucky average.
Flood & Climate Risk in Shepherdsville
Shepherdsville's flood exposure sits in the moderate range: 222 NFIP claims on record and 50% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
Shepherdsville has a moderate flood history with 222 FEMA claims averaging $15,422 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Shepherdsville
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Shepherdsville, KY