Layers
UCMR 5 Testing Status
Vulnerable Populations
What's in Your Water?
Every blue dot is an EPA-registered public water system — community systems, schools, workplaces, and transient facilities. Every red dot is a major industrial facility permitted to discharge process water. 381,956 water systems. 6,922 industrial discharges. 3,539 systems with confirmed PFAS detections. All from federal databases.
The Most Crowded Water
From Boston to D.C., 50 million people share water infrastructure built in the 19th century. Here, water systems and industrial discharges overlap so densely they form a single glowing corridor. Connecticut alone has over 10,000 regulated water systems.
The Industrial Gulf Coast
Louisiana and Texas host the densest concentration of industrial discharge permits in the country. Along the Mississippi River and Houston Ship Channel, petrochemical facilities operate within miles of municipal water intakes serving millions.
20% of Earth's Freshwater
The Great Lakes hold one-fifth of the world's surface freshwater. Detroit, Chicago, Cleveland, and Milwaukee all drink from them. But legacy industrial contamination has left dozens of Superfund sites along these shores — the yellow triangles tell the story.
The Southeast's Quiet Crisis
From the Chattahoochee to the Savannah River, Georgia and the Carolinas depend on surface water shared with growing industrial footprints. Rural communities across the Southeast face aging infrastructure and emerging PFAS contamination far from public attention.
Now It's Your Turn
Every dot on this map comes from EPA-verified coordinates. No connections are inferred. Search for your city, zoom into your neighborhood, and decide for yourself what the proximity means.