Clean Water Act (CWA)

The Ninth Circuit affirmed judgment for environmental groups in a CWA challenge to compel EPA to develop and issue long-overdue temperature TMDLs for the Columbia and Snake Rivers. The groups…

A district court denied motions to remand and vacate EPA's decision to allow a no-discharge zone in Puget Sound. A tugboat, towboat, and barge industry group argued that EPA erred in…

A state appellate court reversed the Minnesota Pollution Control Agency's decision to reissue a NPDES permit for an iron ore mine in northeast Minnesota. An environmental group and Indian…

A district court denied summary judgment in a challenge to EPA's approval of Maryland's 2018 water quality report, which reclassified 139 impairment listings based on TMDLs set by the…

A district court upheld EPA's interpretation that the CWA does not regulate discharges into groundwater that is hydrologically connected to navigable waters in a lawsuit concerning a…

A district court held that environmental groups lacked standing in their challenge to EPA's exclusion of certain waste treatment systems from the definition of navigable waters under the CWA…

The Eleventh Circuit affirmed a district court decision upholding the U.S. Army Corps of Engineers' issuance of four CWA §404 permits to a fertilizer manufacturer engaged in phosphate mining…

The Tenth Circuit denied a motion to hold in abeyance a lawsuit concerning EPA and the U.S. Army Corps of Engineers' 2015 Clean Water Rule. It did decide, however, to consider whether to…

The Ninth Circuit reversed the dismissal of a lawsuit concerning a tile drainage system in the San Joaquin Valley that discharged agricultural drainage into navigable waters without an NPDES…

The Fifth Circuit dismissed environmental groups' challenge to EPA's issuance of a CWA general permit authorizing discharges from oil and gas facilities operating in the Gulf of Mexico.…