A district court granted in part and denied in part gasoline companies' motion for summary judgment in a lawsuit brought by the state of Maryland seeking to redress alleged contamination of its waters with methyl tertiary butyl ether. Maryland brought various common law claims and statutory claims u...

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. States, tribes, and conservation groups sought to have the rule vacated, and EPA moved to remand without vacatu...