Is Your Tap Water Safe to Drink?

Free water quality reports for every city in America. See what's really in your tap water based on EPA data.

Or browse by state

50+
States Covered
10,000+
Cities Analyzed
90+
Contaminants Tracked
100%
Free to Use

Best Water Quality

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Most Concerning Water

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How We Rate Water Quality

1. Collect EPA Data

We pull water quality data directly from EPA's SDWIS database, which tracks every public water system in America.

2. Analyze Contaminants

We compare detected contaminant levels against EPA maximum limits and health guidelines to assess risk.

3. Generate Score

Our algorithm calculates an overall score (0-100) based on contaminant levels, compliance history, and system infrastructure.

Concerned About Your Water Quality?

A home water filter can remove most contaminants and give you peace of mind. See our recommended filters.

View Water Filter Recommendations