F0/100
Warrington Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 59,838 residents · Pennsylvania
What's In Warrington's Tap Water?
69
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.004 µg/L | 0.004 µg/L | Above Goal |
EPA Violation History
7
Violations (last 5yr)
0
Unresolved
3
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: September 1, 2025 – September 30, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: September 22, 2023 – October 25, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: August 13, 2023 – October 25, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 13, 2023 – October 25, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: August 12, 2023 – October 25, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: July 1, 2023 – July 31, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
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.
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: 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
BCWSA MAIN LOWER SOUTH
Population Served
52,621
Water Source
Purchased Surface Water
System ID
PA1090079
NESHAMINY MANOR CENTER
Population Served
2,100
Water Source
Purchased Surface Water
System ID
PA1090093
BCWSA SOLEBURY
Population Served
2,100
Water Source
Groundwater
System ID
PA1090129
BCWSA NEW HOPE
Population Served
3,017
Water Source
Surface Water
System ID
PA1090130
Frequently Asked Questions About Warrington Water
Is Warrington tap water safe to drink?
Warrington, Pennsylvania tap water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 1123 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Warrington's water?
Of the 69 contaminants tested in Warrington's water supply, the most notable include PFOA, PFOS, Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Warrington have any water quality violations?
Yes, Warrington has 1123 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, Other. 32 of these are health-based violations, which are the most serious category.
Do I need a water filter in Warrington?
Based on EPA data, using a water filter in Warrington 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 Warrington's tap water come from?
Warrington's drinking water is sourced from purchased surface water and supplied by BCWSA MAIN LOWER SOUTH and 3 other water system(s). The system serves approximately 59,838 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Warrington'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. Warrington'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 Warrington's water compare to other cities in Pennsylvania?
Warrington'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 Warrington's water quality?
If you have concerns about Warrington'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 (BCWSA MAIN LOWER SOUTH) 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.