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Maryland / DC


Water surrounds the DC region.  It flows through the Potomac and Anacostia rivers, pounds down Great Falls, stills and reflects in the Tidal Basin, and surges in the Chesapeake Bay.  Clean, drinkable water has been pouring through DC pipes and taps for 150 years, since the Washington Aqueduct began operation in 1863.

Preserving that tradition of clean, drinkable, and available water means protecting not just the human-built infrastructure of water mains, aqueducts, treatment plants, and dams but also the natural systems of wetlands, wildlife, and water plants. Nature plays a vital role in filtering our water and keeping humans healthy and safe.

The Nature Conservancy protects clean drinking water across the Potomac watershed in Virginia, Maryland, Pennsylvania, West Virginia, and Washington, DC. Using novel - often innovative - techniques, we’re working to ensure clean water for our region for at least another 150 years, and generations beyond.

Join the conversation on Twitter: #DCH2O.

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