Water Quality by City
Search tap water quality reports for your city. Check contaminants, safety ratings, and treatment data for 9,500+ U.S. cities.
What You Can Find
Complete Water Quality Reports
Access full tap water quality reports including all detected contaminants, test dates, and historical data for your city.
Contaminant Testing Data
View detailed results for 179+ contaminants including lead, arsenic, PFAS, nitrates, and more. Compare to EPA limits.
Safety Assessments
Get clear safety ratings based on health guidelines. Understand which contaminants exceed recommended levels.
Water Utility Information
Find your water utility's contact info, service area, water sources, and treatment methods used in your city.
Violation History
See if your city's water system has EPA violations for exceeding legal limits or failing to test properly.
Treatment Methods
Learn what treatment processes your water goes through—filtration, chlorination, fluoridation, and more.
Popular Cities
Quick access to water quality reports for major U.S. cities
Why Check Your City's Water Quality?
Water Quality Varies by Infrastructure
Even if two cities get water from the same source, treatment methods and pipe infrastructure cause dramatic differences in final tap water quality. Lead pipes, aging infrastructure, and inadequate treatment can contaminate otherwise clean water. That's why you need city-specific data.
EPA Doesn't Regulate Everything
The EPA sets legal limits for only 90 contaminants, but over 300 pollutants can appear in drinking water. Many utilities voluntarily test for additional contaminants. Our city reports show what's actually in your water—not just what's legally required—so you can make informed decisions about filters or treatment.
Take Action with Confidence
Once you know what's in your city's water, you can:
- •Find NSF-certified filters proven to remove your specific contaminants
- •Identify health risks and consult with your doctor if needed
- •Compare your city to neighboring areas to understand regional trends
- •Contact your utility with informed questions about treatment upgrades
đź’ˇ Did You Know?
In 2023, the EPA proposed the first-ever federal limits for PFAS "forever chemicals" in drinking water. Many cities already exceed these proposed limits, but won't be required to comply for several years. Checking your city's data today helps you stay ahead of emerging contaminants.
Related Resources
Search by ZIP Code
Find water quality information for your specific ZIP code area, including multiple cities if applicable.
Find Testing Labs
Locate EPA-certified water testing laboratories in all 50 states for independent water analysis.
Water Filter Guide
Find NSF-certified filters proven to remove specific contaminants found in your city's water.