US Water Score: D
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.0
|
15 ppb | 1 ppb | Passed |
UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFPeA | 21.8 ppt | No standard | — | No federal MCL shown |
| PFHxA | 17.2 ppt | No standard | 400 ppt | No federal MCL shown |
| PFOA | 12.6 ppt | 4 ppt | 4 ppt | Above comparison value |
| PFNA | 12.0 ppt | 10 ppt | 10 ppt | Above comparison value |
| PFBA | 10.1 ppt | No standard | 500 ppt | No federal MCL shown |
| PFBS | 9.5 ppt | 2000 ppt | 100 ppt | Below comparison value |
| PFOS | 9.2 ppt | 4 ppt | 4 ppt | Above comparison value |
| PFHxS | 7.7 ppt | 10 ppt | 10 ppt | Below comparison value |
Water Quality Summary
Tap water quality in Unionville, Pennsylvania (19375) receives an overall grade of D (Elevated record-based concern) with a score of 44 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 20 points below the Pennsylvania state average of 64. Compared to the national average (75), this area scores significantly lower. The area is served by 2 water systems providing water to approximately 822,600 people, using surface water and groundwater sources. Notably, 3 PFAS compounds exceed the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 71 violations, including 5 health-based violations.
A score of 44/100 flags significant system-level concerns in the US Water Score model for Unionville, PA. These may include violations, contaminant levels near or above regulatory limits, or PFAS detections. Review the detailed records, your utility's Consumer Confidence Report, and qualified local guidance.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.
Common Questions
Tap water in Unionville, Pennsylvania receives a grade of D (Elevated record-based concern) with a score of 44/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.
ZIP code 19375 is served by 2 water systems using surface water, groundwater sources, providing water to approximately 822,600 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Lead levels in Unionville, Pennsylvania are 0.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
Yes — 9 PFAS compounds were detected in records associated with water serving Unionville, Pennsylvania, and 3 results exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.
Water systems serving Unionville, Pennsylvania have received 71 violations in the last 5 years, including 5 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.
Based on detected contaminants (PFAS), residents in Unionville, Pennsylvania should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.
Explore Nearby