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

Available EPA records for Libertyville, IL: 4 water compliance violations tied to local public water systems.

Water Quality by ZIP Code in Libertyville

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

ZIP Code	Grade	Score	Violations	Health
60048	D	46	2	0	View report →
60092	D	48	2	0	View report →

Water Quality Overview

Libertyville, Illinois receives a water quality grade of D with an overall score of 47 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).

The 5 water systems serving Libertyville have accumulated 4 EPA violations (all monitoring/reporting type). These violations are tracked across 2 ZIP codes serving approximately 78,001 people.

What Grade D Means

A grade of D indicates significant compliance issues. Libertyville'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 Libertyville water systems is 0.0245 mg/L — this exceeds the EPA action level of 0.015 mg/L. 2 ZIP codes exceed the EPA lead action level.

With 66% of homes built before 1986, Libertyville 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

Libertyville is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.

Water Systems Serving Libertyville

Libertyville is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 78,001 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 10 enforcement actions against water systems serving Libertyville. Enforcement actions range from informal compliance assistance to formal orders and penalties.

How to Check Your Water in Libertyville

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 Libertyville Water Systems

The following contaminants have been detected or caused violations across Libertyville'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 5 enforcement actions against water systems serving Libertyville. Recent actions:

Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-06.

Libertyville vs. Nearby Illinois Cities

How Libertyville's water quality compares to similar cities in Illinois:

Common Questions About Libertyville Water

These are the most common questions residents search for about water quality in Libertyville, Illinois:

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

Can I drink Libertyville tap water? Libertyville's water receives a grade of D (47/100). No health-based violations have been recorded, but home testing is always recommended.

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

Libertyville vs. Illinois Average

Understanding how Libertyville compares to the broader Illinois 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 Libertyville.

ZIP Codes in Libertyville

Libertyville spans 2 ZIP codes. The ZIP with the lowest water quality score is 60048. 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.