The Environmental Protection Agency's Office of Wetlands, Oceans and Watersheds works to protect the nation's marine and fresh water ecosystems. It develops cleanup plans for impaired waters, controls polluted runoff, and protects healthy waters through partnerships with states, tribes, and local groups. While America's water resources are abundant, around 40% are impaired and face threats from pollution, habitat loss, and hydrologic changes. Protecting water quality and restoring watersheds requires involvement from all levels of government as well as individual action within local communities.