WaterQ
Missouri State Report All States
Official Status: March 2026

Is Eureka tap water safe to drink?

✓ Generally Safe
B

Generally acceptable, but review local hotspots — score 78/100.

Safety Score
78
out of 100

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Eureka

Missouri

View Missouri state report Data updated: Mar 2026

Is Eureka tap water safe to drink?

Generally acceptable, but review local hotspots — score 78/100. This report aggregates EPA drinking water data across 2 local systems in Eureka. We found 96 total violations (19 unresolved).

Real-Time Environment

Live: 01:15 PM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Eureka.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

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

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 Eureka.

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Baby Formula Safety

EPA compliance thresholds and pediatric water precautions for Eureka.

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Homebuyer's Perspective

Water system history in Eureka informs property maintenance and private filtration requirements. With a score of 78/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Positive / Stable

Health & Family Safety

Residents should monitor Copper (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 Eureka

96
Violations (5yr)
19
Unresolved
2
Contaminants Tracked
1
Exceeding EPA Limit

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

Frequently Asked Questions

Is Eureka tap water safe to drink?

Generally acceptable, but review local hotspots — score 78/100.

How many water systems serve Eureka?

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

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

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

What is the water quality score for Eureka?

The water quality score for Eureka is 78 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 Eureka?

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

Water Quality Score
78/100
Grade
B
Water Systems
2
Population
19,748

Eureka Water Quality Summary

Eureka, MO receives a water quality score of 78/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.

Eureka's water quality is near the national average. While most systems meet EPA standards, some violations have been recorded. Residents may wish to review their specific water system's report for contaminant details.

Eureka's score of 78 matches the Missouri state average, and in line with 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 Missouri water quality rankings report →

Key Contaminants

Copper (90th percentile) Violation
10.6435 / 1.3 mg/L
0 mg/L MCL: 1.3 mg/L
Lead (90th percentile)
0.00688 / 0.015 mg/L
0 mg/L MCL: 0.015 mg/L

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Water Systems Serving Eureka (2)

Related

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