About Tapwater.org
Making water quality data accessible to everyone
Our Mission
We believe every American has the right to know what's in their tap water. The EPA collects detailed water quality data from every public water system in the country, but this information is often buried in technical databases that are difficult for regular people to access and understand.
Tapwater.org was created to change that. We take official EPA data and present it in a clear, easy-to-understand format. Whether you're concerned about lead levels, water hardness, or EPA violations in your area, we make it simple to find the information you need.
What We Provide
Water Hardness Data
Find out if your water is soft, moderately hard, hard, or very hard, and what that means for your home.
Lead & Copper Levels
See how your city's lead and copper levels compare to EPA action levels.
EPA Violations
Track recent EPA violations and compliance history for water systems in your area.
Filter Recommendations
Get personalized recommendations for water filtration based on your local water quality.
Our Commitment
We are committed to providing accurate, up-to-date information. All data on our site comes from official sources including EPA databases and municipal Consumer Confidence Reports (CCRs). Our safety assessments and filter recommendations are derived algorithmically from EPA standards and maximum contaminant levels—they are not independent medical advice. For health concerns, always consult your local water utility or a healthcare professional.
Our service is free and always will be. We believe access to water quality information should not be behind a paywall.
Want to learn more about our data?
Read about our data sources, collection methods, and how we process EPA information.
View Data Sources