Clean Water Act (CWA)

A district court vacated and remanded EPA's 2020 Clean Water Act Section 401 Certification Rule, which limited the ability of states and Native American tribes to regulate water pollution.…

The Ninth Circuit remanded a summary judgment order in a challenge to EPA's approval of Montana's variance request from approved water quality standards adopted under the CWA. An…

A district court granted EPA and the Army Corps of Engineers' motion to voluntarily remand the Navigable Waters Protection Rule, and granted the Navajo Nation's request that remand…

The Ninth Circuit, 2-1, vacated and remanded a district court ruling in a CWA citizen suit concerning a clay manufacturer's discharges. Environmental groups argued the manufacturer illegally…

The Ninth Circuit vacated an NPDES permit issued by EPA for concentrated animal feeding operations in Idaho. Environmental groups argued the permit lacked sufficient monitoring provisions to…

A district court vacated and remanded EPA's and the Army Corps of Engineers' Navigable Waters Protection Rule, which established a new definition of "waters of the United States…

A Minnesota appellate court affirmed the Minnesota Pollution Control Agency's (MPCA's) decision to issue a CWA §401 certification for the Line 3 crude oil pipeline replacement project.…

The Ninth Circuit affirmed summary judgment for EPA in a challenge to a compliance order stating that landowners' property in Idaho contained wetlands subject to CWA protection and directing…

A district court granted summary judgment for an environmental group in a challenge to EPA's regulations for oil spill dispersants. The group argued that EPA violated the CWA by failing to…

A district court granted EPA's motion to remand without vacatur the Clean Water Act Section 401 Certification Rule., full_html...