WaterQ
Illinois State Report All States
Official Status: March 2026

Is Great Lakes tap water safe to drink?

✓ Generally Safe
A

Mostly yes — Great Lakes scores 90/100.

Safety Score
90
out of 100

Still not sure if you need a filter in Great Lakes?

Read Decision Guide →

Great Lakes

Illinois

View Illinois state report Verified: Apr 2026

Is Great Lakes tap water safe to drink?

Mostly yes — Great Lakes scores 90/100. This report aggregates EPA drinking water data across 0 local systems in Great Lakes. We found 0 total violations (0 unresolved).

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Great Lakes?

Requirement Status
Optional
🟢
💡

Expert Advice

Your water quality is excellent. Standard filtration is optional but can further enhance taste.

Buying a Filter?

Should you buy a water purifier in Great Lakes? See our analysis.

Baby Formula Safety

Is Great Lakes tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Great Lakes, water quality is a key factor in long-term property maintenance. The high safety score (90/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Current records show no major contaminant spikes, making Great Lakes a preferred choice for health-conscious families.

View Health Risk Glossary →

Score Breakdown for Great Lakes

EPA Compliance & Violations 85/100
Contaminant Safety Margin 90%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

Frequently Asked Questions

Is Great Lakes tap water safe to drink?

Mostly yes — Great Lakes scores 90/100.

How many water systems serve Great Lakes?

Great Lakes is served by 0 public water systems in our latest EPA-backed dataset.

How can I check water quality for my exact address in Great Lakes?

Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Great Lakes.

What is the water quality score for Great Lakes?

The water quality score for Great Lakes is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Great Lakes?

Current contaminant data for Great Lakes is being updated. Check back soon or search your specific address for the latest results.

Water Quality Score
90/100
Grade
A
Water Systems
1
Population
23,000

Great Lakes Water Quality Summary

Great Lakes, IL receives a water quality score of 90/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.

Great Lakes's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Water Systems Serving Great Lakes (0)

Water system data coming soon for Great Lakes.

Related

Compare Great Lakes water quality: View all states · Contaminant library · How we score water quality