D36/100
Wernersville Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 7,654 residents · Pennsylvania
What's In Wernersville's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.54 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: January 11, 2025 – March 7, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – December 31, 2023Enforcement: Resolving — corrective action underway
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
WERNERSVILLE MUNI WATER AUTH
Population Served
7,654
Water Source
Purchased Surface Water
System ID
PA3060076
Frequently Asked Questions About Wernersville Water
Is Wernersville tap water safe to drink?
Wernersville, Pennsylvania tap water receives a grade of D (36/100), which is considered poor. 1 contaminant(s) exceed EPA maximum contaminant levels and 52 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Wernersville's water?
Of the 32 contaminants tested in Wernersville's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Wernersville have any water quality violations?
Yes, Wernersville has 52 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, TT. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Wernersville?
Based on EPA data, using a water filter in Wernersville is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Wernersville's tap water come from?
Wernersville's drinking water is sourced from purchased surface water and supplied by WERNERSVILLE MUNI WATER AUTH. The system serves approximately 7,654 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Wernersville'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. Wernersville'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 Wernersville's water compare to other cities in Pennsylvania?
Wernersville'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 Wernersville's water quality?
If you have concerns about Wernersville'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 (WERNERSVILLE MUNI WATER AUTH) 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.