In a long-anticipated decision on the reach of the Clean Water Act (“CWA”), the Supreme Court significantly narrowed the scope of the wetlands and other waters subject to the CWA’s protections. The Court’s opinion in Sackett v. Environmental Protection Agency, released May 25, 2023, limits waters of the United States (“WOTUS”) to “relatively permanent” water bodies such as streams, oceans, rivers and lakes, and to wetlands with a “continuous surface connection” to those water bodies. The Court’s holding removes a wide swath of previously-protected wetlands from the CWA’s permitting requirements, likely eliminates jurisdiction for many ephemeral and intermittent streams, and spells all but certain doom for the U.S. Army Corps of Engineers and U.S. Environmental Protection Agency’s recent rulemaking adopting a new definition of WOTUS for CWA purposes.
