The Seventh Circuit reversed a lower court decision finding a Wisconsin mine operator liable under the CWA for discharging copper into navigable waters without a permit. The CWA's permit…

The Ninth Circuit, on remand from the U.S. Supreme Court, held that pollution exceedances detected at monitoring stations in Los Angeles County were sufficient to establish the county's…

A district court upheld DOI's approval of oil spill response plans an oil company submitted for drilling operations in the Chukchi and Beaufort Seas. Despite environmental groups'…

A district court dismissed a landowner's lawsuit challenging the U.S. Army Corps of Engineers' jurisdictional determination for property that contains peat. The Corps issued its…

The Ninth Circuit affirmed a lower court decision vacating the Nevada state engineer's approval of the state wildlife agency's application to transfer water rights from agricultural land…

A district court dismissed a homebuilder association's lawsuit against EPA and the U.S. Army Corps of Engineers challenging their determination that portions of the Santa Cruz River are…

A California court held that the California Department of Public Health must adopt a final primary drinking water standard for hexavalent chromium. The state legislature commanded the department…

A district court held that a mining company is liable under the CWA for the unpermitted discharge of selenium at one its surface mines. The company did not dispute that it has been discharging…

The Ninth Circuit reversed a lower court decision dismissing a conservation group's CWA citizen suit alleging that a scrap metal company violated California's general NPDES permit for…

The Seventh Circuit upheld a dredge and fill permit issued by the U.S. Army Corps of Engineers for a highway project that crosses wetlands in Indiana. The Corps adequately considered practicable…