Groundwork USA is a federation of local non-profit organizations dedicated to community-based improvement of the physical environment in economically disadvantaged communities. Groundwork "Trusts" transform neglected land and waterways into community assets, increasing environmental, social and economic well-being while building community capacity. They turn brownfields into parks, gardens and greenways; restore urban waterways and water systems; create neighborhood infrastructure for active living; expand local food production and access; and advance equitable development. The Groundwork network was launched in the late 1990s through a partnership led by the National Park Service and US Environmental Protection Agency. Groundwork USA was founded in 2003 to support the growing network and build the sustainable community development field. Groundwork USA leads technical assistance, learning network and youth leadership development programs involving brownfields revitalization, environmental justice/equitable development, urban waters and public lands stewardship.