WaterQ
Illinois State Report All States
Official Status: March 2026

Is Buffalo Grove tap water safe to drink?

⚠ Caution Advised
C

Use extra caution — Buffalo Grove scores 58/100.

Safety Score
58
out of 100

Still not sure if you need a filter in Buffalo Grove?

Read Decision Guide →

Buffalo Grove

Illinois

View Illinois state report Data updated: Mar 2026

Is Buffalo Grove tap water safe to drink?

Use extra caution — Buffalo Grove scores 58/100. This report aggregates EPA drinking water data across 2 local systems in Buffalo Grove. We found 114 total violations (3 unresolved).

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Buffalo Grove?

Requirement Status
Recommended
🟡
💡

Expert Advice

Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.

Buying a Filter?

Should you buy a water purifier in Buffalo Grove? See our analysis.

Baby Formula Safety

Is Buffalo Grove tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Buffalo Grove, water quality is a key factor in long-term property maintenance. With a score of 58/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

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 Buffalo Grove

114
Violations (5yr)
3
Unresolved
1
Contaminants Tracked
0
Exceeding EPA Limit

Based on EPA SDWIS violation records and contaminant test results for all water systems serving Buffalo Grove.

Frequently Asked Questions

Is Buffalo Grove tap water safe to drink?

Use extra caution — Buffalo Grove scores 58/100.

How many water systems serve Buffalo Grove?

Buffalo Grove is served by 2 public water systems in our latest EPA-backed dataset.

How can I check water quality for my exact address in Buffalo Grove?

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

What is the water quality score for Buffalo Grove?

The water quality score for Buffalo Grove is 58 out of 100, based on EPA contaminant data, violation history, and testing results across the 2 systems serving the city.

What are the top contaminants in Buffalo Grove?

The top contaminants detected in Buffalo Grove include Lead (90th percentile). View detailed information on our contaminants page.

Water Quality Score
58/100
Grade
D
Water Systems
2
Population
44,312

Buffalo Grove Water Quality Summary

Buffalo Grove, IL receives a water quality score of 58/100 (Grade D) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.

Buffalo Grove'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.

Buffalo Grove'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

Lead (90th percentile)
0.0014 / 0.015 mg/L
0 mg/L MCL: 0.015 mg/L

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Water Systems Serving Buffalo Grove (2)

Related

Compare Buffalo Grove water quality: View all states · Contaminant library · How we score water quality