Penryn, PA: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Although conditions vary by service area, Penryn's water systems collectively show below-average compliance within PA — health-based violations are documented throughout the city, and the overall grade reflects a pattern rather than isolated incidents.
How Penryn Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Systems Serving Penryn
Because residential water in Penryn, PA flows primarily through a single utility, infrastructure decisions, rate-setting, and EPA compliance are all managed within one organizational structure. Federal records show 1 system active in the area, but one provider dominates the service landscape for most homes and apartments.
Overview
We track water quality and home safety data for 1 ZIP code in Penryn, Pennsylvania, covering 1 community water system serving approximately 120,000 people.
No EPA violations recorded across any ZIP codes in Penryn — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Penryn: D (40/100)
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
Penryn water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Penryn
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High 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 |
|---|---|---|---|
| 17564 | D | CITY OF LANCASTER | 120,000 |
All ZIP Codes in Penryn
- 17564 [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 Penryn
- 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 Penryn, PA