Is Lansdale, Pennsylvania tap water safe?
4 water systems report serving Lansdale. 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.
B
North Penn Water Authority
Serves 91,941 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA; Lead 90th percentile below the action level (2025).
A
Pa American Norristown
Serves 88,885 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
North Wales Water Authority
Serves 72,496 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2025).
B
Aqua Pa Superior Center Point
Serves 500 people · Groundwater · Full report →
1 health-based violation in the last 5 years; No UCMR 5 PFAS results on file.