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NASA

Our Drinking Water and Forest Service Research

Behind every drop of water from the tap is an entire forest ecosystem. And while it’s easy to take drinking water for granted, you might be surprised to learn that the nation’s largest single source of water is the National Forest System, the network of national forests stewarded by the USDA Forest Service. Many of these national forest lands overlay the source areas for important rivers and aquifer systems, and more than 60 million Americans rely on them for drinking water.