(WASHINGTON, EPA News Release) – 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.

“When Congress passed the Clean Water Act 50 years ago, it recognized that protecting our waters is essential to ensuring healthy communities and a thriving economy,” said EPA Administrator Michael S. Regan. “Following extensive stakeholder engagement, and building on what we’ve learned from previous rules, EPA is working to deliver a durable definition of WOTUS that safeguards our nation’s waters, strengthens economic opportunity, and protects people’s health while providing greater certainty for farmers, ranchers, and landowners.”

“This final rule recognizes the essential role of the nation’s water resources in communities across the nation,” said Assistant Secretary of the Army for Civil Works Michael L. Connor. “The rule’s clear and supportable definition of waters of the United States will allow for more efficient and effective implementation and provide the clarity long desired by farmers, industry, environmental organizations, and other stakeholders.”

This rule establishes a durable definition of “waters of the United States” that is grounded in the authority provided by Congress in the Clean Water Act, the best available science, and extensive implementation experience stewarding the nation’s waters. The rule returns to a reasonable and familiar framework founded on the pre-2015 definition with updates to reflect existing Supreme Court decisions, the latest science, and the agencies’ technical expertise. It establishes limits that appropriately draw the boundary of waters subject to federal protection.

The final rule restores fundamental protections so that the nation will be closer to achieving Congress’ goal in the Clean Water Act that American waters be fishable and swimmable, and above all, protective of public health. It will also ensure that the nation’s waters support recreation, wildlife, and agricultural activity, which is fundamental to the American economy. The final rule will cover those waters that Congress fundamentally sought to protect in the Clean Water Act—traditional navigable waters, the territorial seas, interstate waters, as well as upstream water resources that significantly affect those waters.