WASHINGTON (December 30, 2022) – Today, the U.S. Environmental Protection Agency (EPA) and the U.S. Department of the Army (the agencies) announced a final rule establishing a durable definition of "waters of the United States" (WOTUS) to reduce uncertainty from changing regulatory definitions, protect people's health, and support economic opportunity. The final rule restores essential water protections that were in place prior to 2015 under the Clean Water Act for traditional navigable waters, the territorial seas, interstate waters, as well as upstream water resources that significantly affect those waters. As a result, this action will strengthen fundamental protections for waters that are sources of drinking water while supporting agriculture, local economies, and downstream communities.