Is Unionville, Pennsylvania tap water safe?
2 water systems report serving Unionville. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.
D
Aqua Pennsylvania (Main System)
Serves 822,600 people · Surface water · Full report →
1 health-based violation in the last 5 years; 28 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Other PFAS above 2024 limits (rule proposed for repeal): Hazard Index; Lead 90th percentile below the action level (2025).
C
Stone Barn Rentals
Serves 120 people · Groundwater · Full report →
2 health-based violations in the last 5 years; 9 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 1996 (older than 5 years, not graded).