The U.S. Supreme Court held, 5-4, that the CWA does not authorize EPA to include "end-result" provisions in NPDES permits, in a lawsuit concerning the Agency's issuance of a renewal…

A district court granted summary judgment for an environmental group in a lawsuit alleging that an equestrian center was unlawfully discharging pollutants into waters of the United States. The…

A district court vacated the Army Corps of Engineers' permit approvals under the CWA and the Rivers and Harbors Act (RHA) for development of a new port along the Delaware River. Three upriver…

A district court held that the Army Corps of Engineers violated the CWA and NEPA by issuing a dredge-and-fill permit to a municipal water utility to allow a dam expansion project in Denver.…

In an unpublished opinion, the Sixth Circuit granted environmental groups' motion to stay CWA permits issued for construction of a proposed pipeline in Tennessee. The groups argued the…

A district court denied USDA's motion to alter judgment in a lawsuit challenging the Natural Resources Conservation Service's (NRCS') 2020 final rule concerning pre-1996 wetland…

A district court granted in part and denied in part summary judgment for environmental groups in a challenge to the Army Corps of Engineers' nationwide permit authorizing the installation of…

The Third Circuit dismissed for lack of jurisdiction a chemical company's petition to review EPA's health advisory for HFPO-DA, a chemical found in drinking water. The company argued the…

The U.S. Supreme Court, 5-4, denied two states' motion to enter into a consent decree in a lawsuit concerning a 1938 interstate agreement that apportions the waters of the Rio Grande River…

A district court denied a commercial fisherman's motion to preliminarily enjoin the Army Corps of Engineers and EPA from enforcing a 2023 rule that revised the definition of "waters of…