TapSafetyReport
D23/100

North Wales Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 95,384 residents · Pennsylvania

What's In North Wales's Tap Water?

69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.002 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

5

Unresolved

0

Health-Related

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.

When: April 1, 2025 – June 30, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Violation related to Consumer Confidence Report

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: March 1, 2025 – March 31, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleVerify on EPA.gov
TIER 3Unresolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleVerify on EPA.gov
TIER 3Unresolved

Violation related to Consumer Confidence Report

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Consumer Confidence RuleVerify on EPA.gov
TIER 3Resolved

Violation related to Consumer Confidence Report

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2021 – August 31, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – July 31, 2021Rule: Surface Water Treatment RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Violation related to Consumer Confidence Report

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: May 1, 2021 – May 31, 2021Rule: Consumer Confidence RuleEnforcement: 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

NWWA WARRINGTON TOWNSHIP
Population Served

21,588

Water Source

Purchased Surface Water

System ID

PA1090070

NORTH WALES WATER AUTHORITY
Population Served

72,496

Water Source

Surface Water

System ID

PA1460048

VILLAGE OF NESHAMINY FALLS
Population Served

1,300

Water Source

Purchased Surface Water

System ID

PA1460077

Frequently Asked Questions About North Wales Water

Is North Wales tap water safe to drink?

North Wales, Pennsylvania tap water receives a grade of D (23/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 632 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in North Wales's water?

Of the 69 contaminants tested in North Wales'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 North Wales have any water quality violations?

Yes, North Wales has 632 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, RPT. 6 of these are health-based violations, which are the most serious category.

Do I need a water filter in North Wales?

North Wales 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 North Wales's tap water come from?

North Wales's drinking water is sourced from purchased surface water and supplied by NWWA WARRINGTON TOWNSHIP and 2 other water system(s). The system serves approximately 95,384 people. Surface water sources include rivers, lakes, and reservoirs.

How often is North Wales'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. North Wales'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 North Wales's water compare to other cities in Pennsylvania?

North Wales's water quality score of 23/100 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 North Wales's water quality?

If you have concerns about North Wales'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 (NWWA WARRINGTON TOWNSHIP) 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.

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