F0/100
Lansdale Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 91,941 residents · Pennsylvania
What's In Lansdale's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2006.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
NORTH PENN WATER AUTHORITY
Population Served
91,941
Water Source
Purchased Surface Water
System ID
PA1460034
Frequently Asked Questions About Lansdale Water
Is Lansdale tap water safe to drink?
Lansdale, Pennsylvania tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 96 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Lansdale's water?
Of the 69 contaminants tested in Lansdale's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Lansdale have any water quality violations?
Yes, Lansdale has 96 EPA violation(s) on record, with the most recent in 2006. Violation types include MR, MCL. 6 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lansdale?
Lansdale water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Lansdale's tap water come from?
Lansdale's drinking water is sourced from purchased surface water and supplied by NORTH PENN WATER AUTHORITY. The system serves approximately 91,941 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lansdale's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Lansdale's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Lansdale's water compare to other cities in Pennsylvania?
Lansdale's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Pennsylvania state page to see how all cities in the state compare.
What should I do if I'm concerned about Lansdale's water quality?
If you have concerns about Lansdale's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (NORTH PENN WATER AUTHORITY) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.