WaterQ
Ohio State Report All States
Official Status: March 2026

Is Defiance tap water safe to drink?

⚠ Caution Advised
C

Use extra caution — Defiance scores 50/100.

Safety Score
50
out of 100

Still not sure if you need a filter in Defiance?

Read Decision Guide →

Defiance

Ohio

View Ohio state report Verified: Apr 2026

Is Defiance tap water safe to drink?

Use extra caution — Defiance scores 50/100. This report aggregates EPA drinking water data across 0 local systems in Defiance. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 07:45 PM
0mm Precipitation

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

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 Defiance?

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 Defiance? See our analysis.

Baby Formula Safety

Is Defiance tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Defiance, water quality is a key factor in long-term property maintenance. With a score of 50/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

Health & Family Safety

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

View Health Risk Glossary →

Score Breakdown for Defiance

EPA Compliance & Violations 60/100
Contaminant Safety Margin 50%

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

Frequently Asked Questions

Is Defiance tap water safe to drink?

Use extra caution — Defiance scores 50/100.

How many water systems serve Defiance?

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

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

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

What is the water quality score for Defiance?

The water quality score for Defiance 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 Defiance?

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

Water Quality Score
50/100
Grade
D
Water Systems
2
Population
18,154

Defiance Water Quality Summary

Defiance, OH receives a water quality score of 50/100 (Grade D) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.

Defiance'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.

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

Water Systems Serving Defiance (0)

Water system data coming soon for Defiance.

Related

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