Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03

Local water systems serving North Wales, PA carry 32 EPA violations on record in the federal compliance database — documented events spanning categories from maximum contaminant level exceedances to monitoring requirements tracked by the national Safe Drinking Water program.

Water Quality by ZIP Code in North Wales

Water quality varies across North Wales's 2 ZIP codes. Check your specific ZIP for detailed contaminant data.

ZIP Code	Grade	Score	Violations	Health
19454	D	53	16	0	View report →
19455	D	54	16	0	View report →

Water Quality Overview

North Wales, Pennsylvania receives a water quality grade of D with an overall score of 54 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).

The 5 water systems serving North Wales have accumulated 32 EPA violations (all monitoring/reporting type). These violations are tracked across 2 ZIP codes serving approximately 96,984 people.

What Grade D Means

A grade of D indicates significant compliance issues. North Wales's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.

Lead Levels

The average 90th percentile lead level across North Wales water systems is 0.0016 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.

With 50% of homes built before 1986, North Wales has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.

Radon Risk

North Wales is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.

Water Systems Serving North Wales

North Wales is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 96,984 people across 2 ZIP codes.

Each water system is identified by a Public Water System ID (PWSID) and is required to:

• Test for over 90 regulated contaminants on a regular schedule
• Report results to the EPA and state regulators
• Issue an annual Consumer Confidence Report (CCR) to all customers
• Take corrective action when violations occur

The EPA has taken 20 enforcement actions against water systems serving North Wales. Enforcement actions range from informal compliance assistance to formal orders and penalties.

How to Check Your Water in North Wales

1. Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores

2. Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants

3. Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel

4. Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics

5. Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts

Contaminants Detected in North Wales Water Systems

The following contaminants have been detected or caused violations across North Wales's water systems:

MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.

EPA Enforcement History

The EPA and state regulators have taken 10 enforcement actions against water systems serving North Wales. Recent actions:

Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-07-30.

North Wales vs. Nearby Pennsylvania Cities

How North Wales's water quality compares to similar cities in Pennsylvania:

Common Questions About North Wales Water

These are the most common questions residents search for about water quality in North Wales, Pennsylvania:

Is North Wales water hard or soft? Water hardness varies by source. North Wales's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.

Can I drink North Wales tap water? North Wales's water receives a grade of D (54/100). No health-based violations have been recorded, but home testing is always recommended.

What is the best water filter for North Wales? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.

North Wales vs. Pennsylvania Average

Understanding how North Wales compares to the broader Pennsylvania average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.

To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within North Wales.

ZIP Codes in North Wales

North Wales spans 2 ZIP codes. The ZIP with the lowest water quality score is 19454. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones
• Enforcement: EPA ECHO database
• Filter recommendations: NSF/ANSI certified products

Updated daily.