WaterQ
Illinois State Report All States
Official Status: March 2026

Is Centralia tap water safe to drink?

✓ Generally Safe
B

Mostly yes — Centralia scores 82/100.

Safety Score
82
out of 100

Still not sure if you need a filter in Centralia?

Read Decision Guide →

Centralia

Illinois

View Illinois state report Data updated: Mar 2026

Is Centralia tap water safe to drink?

Mostly yes — Centralia scores 82/100. This report aggregates EPA drinking water data across 9 local systems in Centralia. We found 197 total violations (82 unresolved).

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Centralia?

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?

Evaluation of municipal compliance and household filtration options in Centralia.

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Baby Formula Safety

EPA compliance thresholds and pediatric water precautions for Centralia.

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Homebuyer's Perspective

Water system history in Centralia informs property maintenance and private filtration requirements. The high safety score (82/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

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 Centralia

197
Violations (5yr)
82
Unresolved
1
Contaminants Tracked
0
Exceeding EPA Limit

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

Frequently Asked Questions

Is Centralia tap water safe to drink?

Mostly yes — Centralia scores 82/100.

How many water systems serve Centralia?

Centralia is served by 9 public water systems in our latest EPA-backed dataset.

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

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

What is the water quality score for Centralia?

The water quality score for Centralia is 82 out of 100, based on EPA contaminant data, violation history, and testing results across the 9 systems serving the city.

What are the top contaminants in Centralia?

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

Water Quality Score
82/100
Grade
B
Water Systems
9
Population
28,735

Centralia Water Quality Summary

Centralia, IL receives a water quality score of 82/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 9 public water systems serving the area.

Centralia'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.

Centralia's score of 82 is 16 points above the Illinois state average of 66, and above 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)
0.0034 / 0.015 mg/L
0 mg/L MCL: 0.015 mg/L

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Water Systems Serving Centralia (9)

Related

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