State of Colorado v. EPA, No. 20-1238 (10th Cir. 2021)Annotate this Case
The issue common to appeals consolidated for the Tenth Circuit's review centered on what are "waters of the United States." In April 2020, the Environmental Protection Agency and the Army Corps of Engineers tried to define the phrase through a regulation called the Navigable Waters Protection Rule (NWPR). The State of Colorado swiftly challenged the NWPR in federal court, arguing the new rule, despite its name, did very little to protect waters of the United States and was both substantively and procedurally flawed. Before the NWPR took effect, Colorado asked the district court to enjoin the Agencies from implementing the rule pending a determination on the merits of the case. The district court obliged, issuing an order staying the effective date of the NWPR and preliminarily enjoining the Agencies to continue administering the Clean Water Act under the then-current regulations. The Tenth Circuit was asked whether the district court abused its discretion when it granted Colorado injunctive relief. To this, the Court responded in the affirmative: "Colorado asked for immediate relief but hasn’t shown it will suffer irreparable injury absent a preliminary injunction. Because that alone compels us to reverse, we do not consider the other preliminary injunction factors."