Waterkeeper Alliance is a worldwide network of environmental organizations founded in 1999 that work to protect bodies of water around the United States and the world.

[2] In 1983, the founding Riverkeeper organization, founded by Robert H. Boyle, formed around the Hudson River in New York, in response to the untreated sewage and industrial water pollution that was degrading water quality in the river.

The group helps to coordinate and cover issues affecting Waterkeepers that work to protect rivers, lakes, bays, sounds, and other water bodies around the world.

In the United States, only 52 of the 180 groups cover watersheds west of the Mississippi River.

[4] In June 2019, the group announced a project with online travel website Culture Trip called "Waterkeeper Warriors."