D36/100
Norristown Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 97,085 residents · Pennsylvania
What's In Norristown'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) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2024 – October 31, 2024Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
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
PA AMERICAN NORRISTOWN
Population Served
88,885
Water Source
Surface Water
System ID
PA1460046
PA AMERICAN AUDUBON
Population Served
8,200
Water Source
Purchased Surface Water
System ID
PA1460055
Frequently Asked Questions About Norristown Water
Is Norristown tap water safe to drink?
Norristown, Pennsylvania tap water receives a grade of D (36/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 1623 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Norristown's water?
Of the 69 contaminants tested in Norristown'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 Norristown have any water quality violations?
Yes, Norristown has 1623 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, RPT. 9 of these are health-based violations, which are the most serious category.
Do I need a water filter in Norristown?
Norristown 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 Norristown's tap water come from?
Norristown's drinking water is sourced from surface water and supplied by PA AMERICAN NORRISTOWN and 1 other water system(s). The system serves approximately 97,085 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Norristown'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. Norristown'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 Norristown's water compare to other cities in Pennsylvania?
Norristown's water quality score of 36/100 earns a grade of D, which is considered poor. 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 Norristown's water quality?
If you have concerns about Norristown'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 (PA AMERICAN NORRISTOWN) 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.