The U.S. Supreme Court reversed a lower court decision holding a water district liable under the CWA for violating its municipal separate storm sewer system permit.

A district court held that EPA cannot regulate stormwater as a pollutant under the CWA. According to the court, the language of CWA §303(d)(1)(C) is clear. EPA may set TMDLs to regulate pollutants, and pollutants are carefully defined.

A district court dismissed an environmental group's CWA action against a poultry farm claiming that it illegally discharged chicken litter into tributaries of the Chesapeake Bay.