WaterQ
Ohio State Report All States
Official Status: March 2026

Is Dayton tap water safe to drink?

✓ Generally Safe
B

Mostly yes — Dayton scores 83/100.

Safety Score
83
out of 100

Still not sure if you need a filter in Dayton?

Read Decision Guide →

Dayton

Ohio

View Ohio state report Verified: Apr 2026

Is Dayton tap water safe to drink?

Mostly yes — Dayton scores 83/100. This report aggregates EPA drinking water data across 1 local system in Dayton. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 02:45 PM
0mm Precipitation

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

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 Dayton?

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 Dayton? See our analysis.

Baby Formula Safety

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

Homebuyer's Perspective

For those looking to relocate to Dayton, water quality is a key factor in long-term property maintenance. The high safety score (83/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Residents should monitor Perchlorate levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.

View Health Risk Glossary →

Score Breakdown for Dayton

EPA Compliance & Violations 85/100
Contaminant Safety Margin 83%

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

Frequently Asked Questions

Is Dayton tap water safe to drink?

Mostly yes — Dayton scores 83/100.

How many water systems serve Dayton?

Dayton is served by 1 public water system in our latest EPA-backed dataset.

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

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

What is the water quality score for Dayton?

The water quality score for Dayton 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 Dayton?

The top contaminants detected in Dayton include Perchlorate, Mercury, Chromium (Total). View detailed information on our contaminants page.

Water Quality Score
83/100
Grade
B
Water Systems
5
Population
156,456

Dayton Water Quality Summary

Dayton, OH receives a water quality score of 83/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 5 public water systems serving the area.

Dayton'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 →

Key Contaminants

Perchlorate
54.3476 / 56 μg/L
0 μg/L MCL: 56 μg/L
Mercury
1.637 / 2 μg/L
0 μg/L MCL: 2 μg/L
Chromium (Total)
64.3951 / 100 μg/L
0 μg/L MCL: 100 μg/L
Tetrachloroethylene (PCE)
3.213 / 5 μg/L
0 μg/L MCL: 5 μg/L
Fluoride
1.9094 / 4 mg/L
0 mg/L MCL: 4 mg/L
Radium-226
2.0832 / 5 pCi/L
0 pCi/L MCL: 5 pCi/L
Haloacetic Acids (HAA5)
24.0044 / 60 μg/L
0 μg/L MCL: 60 μg/L
Gross Alpha Particle Activity
4.9984 / 15 pCi/L
0 pCi/L MCL: 15 pCi/L

Water Systems Serving Dayton (1)

Related

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