Lake Forest
Is Lake Forest tap water safe to drink?
Use extra caution — Lake Forest scores 58/100. This report aggregates EPA drinking water data across 1 local system in Lake Forest. We found 33 total violations (13 unresolved).
Real-Time Environment
Live: 06:15 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Lake Forest.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Lake Forest?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Wondering if Lake Forest tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Lake Forest tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Lake Forest, water quality belongs on your due-diligence checklist alongside schools and crime data. With a score of 58/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Lake Forest
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Lake Forest.
Frequently Asked Questions
Is Lake Forest tap water safe to drink?
Use extra caution — Lake Forest scores 58/100.
How many water systems serve Lake Forest?
Lake Forest is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Lake Forest?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Lake Forest.
What is the water quality score for Lake Forest?
The water quality score for Lake Forest is 58 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.
What are the top contaminants in Lake Forest?
The top contaminants detected in Lake Forest include Lead (90th percentile). View detailed information on our contaminants page.
Lake Forest Water Quality Summary
Lake Forest, IL receives a water quality score of 58/100 (Grade D) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Lake Forest's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.
Lake Forest's score of 58 is 8 points below the Illinois state average of 66, and below the nationwide average of roughly 78/100 across all U.S. states.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Illinois water quality rankings report →
Key Contaminants
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Water Systems Serving Lake Forest (1)
Check Your Specific Address
Water quality can vary by neighborhood in Lake Forest.
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Compare Lake Forest water quality: View all states · Contaminant library · How we score water quality