Preston, KY Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Monitoring data across Preston reveals a persistent pattern of below-average compliance in KY — multiple service areas carry documented health violations, and the data has shown little overall improvement over recent EPA reporting cycles.
How Preston Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Systems Serving Preston
Federal records list 1 water system serving Preston, KY. One provider accounts for the large majority of residential water connections in the area, concentrating infrastructure and compliance accountability.
Overview
We track water quality and home safety data for 1 ZIP code in Preston, Kentucky, covering 1 community water system serving approximately 2,307 people.
No EPA violations recorded across any ZIP codes in Preston — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Preston: D (53/100)
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
Preston water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Preston
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 40366 | D | OWINGSVILLE WATER WORKS | 2,307 |
All ZIP Codes in Preston
- 40366 [D]
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.
What You Can Do in Preston
- 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 Preston, KY