Is Downingtown, Pennsylvania tap water safe?
9 water systems report serving Downingtown. 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
Aqua Pa West Chester
Serves 48,600 people · Surface water · Full report →
No health-based violations in the last 5 years; 30 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOA; Lead 90th percentile below the action level (2025).
A
Pa American Coatesville
Serves 36,960 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
Aqua Pa Uwchlan
Serves 35,518 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2025).
B
Downingtown Water Authority
Serves 9,900 people · Surface water · Full report →
No health-based violations in the last 5 years; 24 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
Aqua Pa Friendship
Serves 8,800 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2025).
B
Aqua Pa Spring Run
Serves 8,151 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFOA/PFOS average above the 4 ppt federal limit: PFOA; Lead 90th percentile below the action level (2025).
A
Appleville Mobile Home Park
Serves 461 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2007 (older than 5 years, not graded).
A
Mt Idy Mobile Home Park
Serves 80 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2006 (older than 5 years, not graded).