A district court denied a motion to reconsider its 2018 ruling that gave EPA discretion as to how to establish a new TMDL for trash in the Anacostia River. An environmental group argued that little progress had been made since the 2018 ruling and that the court should require the Agency to establish...

In an unpublished opinion, the Ninth Circuit granted in part and denied in part an environmental group's petition to review EPA's approval of the Idaho Pollution Discharge Elimination System (IPDES). Specifically, the court denied the petition with respect to the group's challenges concerning the st...

The Sixth Circuit dismissed as moot a lawsuit seeking to preliminarily enjoin EPA's 2015 Clean Water Rule that clarified the definition of "waters of the United States" under the CWA. Ohio and Tennessee challenged the validity of the rule, arguing it extended the scope of the CWA beyond the reach of...

A district court vacated the Trump Administration's rescission of the Obama Administration's Waste Prevention Rule, which was enacted to reduce methane waste from oil and gas operations on public and tribal lands. California, New Mexico, and environmental groups argued the rescission violated the AP...

A district court stayed the Navigable Waters Protection Rule, which substantially narrows the definition of "waters of the United States" that are subject to federal regulation under the CWA, in Colorado. Colorado argued that the Supreme Court's ruling in Rapanos v. United States foreclosed the appr...