Is Your Tap Water Safe to Drink?
Search water quality reports for 5,241+ US cities. Get instant access to contaminant test results and certified filter recommendations.
✓ Over 50,000 water systems tested • Updated from EPA and local utilities
Explore Tap Water Quality by Category
Browse by state, search contaminants, compare water filters, and learn about EPA standards
Browse by StateView water quality reports for all 50 statesSearch ContaminantsLearn about common water contaminantsFilter Buying GuideFind the right water filter for your needsCities at RiskCities with water quality concernsMost SearchedPopular city water quality reportsEPA StandardsUnderstanding EPA water quality limits
Check Tap Water Quality by City
View detailed tap water quality reports for major cities across the United States
🏙️
New York, NY
8.3M people served
Contaminants Tested20
Above Guidelines5
View Full Report →
🏙️
Los Angeles, CA
3.9M people served
Contaminants Tested20
Above Guidelines14
View Full Report →
🏙️
Chicago, IL
2.7M people served
Contaminants Tested20
Above Guidelines11
View Full Report →
🏙️
Houston, TX
2.2M people served
Contaminants Tested20
Above Guidelines12
View Full Report →
🏙️
Phoenix, AZ
1.7M people served
Contaminants Tested20
Above Guidelines15
View Full Report →
🏙️
Philadelphia, PA
1.6M people served
Contaminants Tested20
Above Guidelines10
View Full Report →
5,241 Cities
Comprehensive coverage
EPA Verified
Official EPA data source
NSF Certified
Filter recommendations
EWG Standards
Health-based guidelines