A district court denied motions to dismiss environmental groups' CWA citizen suit against an energy company for alleged NPDES permit violations at a retired coal-fired power plant. The groups…

A district court upheld the U.S. Army Corps of Engineers' decision to issue a general nationwide permit—NWP 21—authorizing discharges from certain coal mining activities into navigable waters…

The Sixth Circuit issued a nationwide stay enjoining the "waters of the United States" rule pending the court's determination as to whether it has subject matter jurisdiction to…

The Second Circuit remanded portions of EPA's 2013 general NPDES permit for ship ballast water, a primary cause of the spread of invasive species from one body of water to another. The…

A district court, on motions for summary judgment, held that a marine fueling, service, and storage facility in Seattle was liable under the CWA for various NPDES general permit violations. The…

A district court denied in part and granted in part EPA's motion to dismiss property owners' lawsuit challenging the constitutionality of an EPA compliance order under CWA §309. EPA…

The D.C. Circuit upheld the dismissal of an environmental group's NEPA and CWA claims against the U.S. government in connection with a 593-mile oil pipeline that runs from Illinois to…

A district court upheld EPA's decision to withdraw a proposed rule that would have required concentrated animal feeding operations (CAFOs) to provide information to the Agency to help…

A district court held that its preliminary injunction enjoining EPA and the U.S. Army Corps of Engineers from implementing the "waters of the United States" rule only extends to the 13…

A district court dismissed EPA's enforcement action against a developer for filling wetlands in violation of the CWA and ordered the Agency to pay attorney fees the developer incurred…