A district court granted an environmental group's motion for preliminary injunction in a CWA citizen suit brought against a chemical manufacturer for discharging per- and polyfluoroalkyl…

The Eleventh Circuit affirmed dismissal of a CWA citizen suit brought against a hotel owner for filling a nearby wetland. Environmental groups argued the hotel violated the CWA by failing to…

The Ninth Circuit granted in part environmental groups' petition to review EPA's decision refusing to revise technology-based effluent limits, guidelines, and standards (ELGs) for…

The Sixth Circuit denied environmental groups' petition to review the Tennessee Department of Environment and Conservation's (TDEC's) order issuing a water quality certification for…

A district court enjoined construction on a dam expansion project in Colorado in environmental groups' challenge to the Army Corps of Engineers' issuance of a dredge and fill permit. The…

The Fifth Circuit affirmed denial of summary judgment for two Native American tribes and an environmental group in a challenge to a CWA §404 permit issued by the Army Corps of Engineers to expand…

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.…