Fifth Circuit Vacates EPA's Approval of Texas's Clean Air Act Plan
ca5 · 2026-03-13 · Mixed · Impact: 75/100
State of Texas v. EPA, decided by Fifth Circuit on March 13, 2026, resulted in a mixed outcome. The Fifth Circuit reviewed the EPA's "Good Neighbor" provision under the Clean Air Act, which requires s...
DEP can compel township to adopt waste management plan
pa · 2026-02-18 · Plaintiff Win · Impact: 25/100
DEP v. Grant Twp. of Indiana Co., Aptls., decided by Pennsylvania Supreme Court on February 18, 2026, resulted in a plaintiff win outcome. The Pennsylvania Department of Environmental Protection (DEP)...
NC DEQ regulations for CAFOs deemed invalid for exceeding statutory authority
nc · 2025-10-17 · Defendant Win · Impact: 65/100
N.C. Dep't of Env't Quality v. N.C. Farm Bureau Fed'n, Inc., decided by North Carolina Supreme Court on October 17, 2025, resulted in a defendant win outcome. The North Carolina Department of Environm...
Eleventh Circuit Upholds EPA's Authority to Regulate Greenhouse Gases
ca11 · 2025-08-19 · Plaintiff Win · Impact: 75/100
Donald Johnson v. United States Congress, decided by Eleventh Circuit on August 19, 2025, resulted in a plaintiff win outcome. The Eleventh Circuit addressed whether the "major questions doctrine" app...
CAFC: Navigable Waters Exception to CWA Discharge Applies Only 'On' Navigable Waters
cafc · 2025-04-02 · Defendant Win · Impact: 40/100
United Water Conservation District v. United States, decided by Federal Circuit on April 2, 2025, resulted in a defendant win outcome. The case concerns the interpretation of the "navigable waters" ex...
Eleventh Circuit Upholds FWS Interpretation of Lacey Act on Wildlife Trafficking
ca11 · 2025-03-14 · Defendant Win · Impact: 40/100
Organization of Professional Aviculturists, Inc. v. U.S. Fish and Wildlife Service, decided by Eleventh Circuit on March 14, 2025, resulted in a defendant win outcome. The Organization of Professional...
Ninth Circuit: No CWA violation without proof of pollutant "addition" from point source
ca9 · 2025-03-04 · Defendant Win · Impact: 65/100
State of Montana v. Talen Montana, LLC, decided by Ninth Circuit on March 4, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's dismissal of a Clean Water Act l...