A district court vacated EPA's denial of an environmental group's petition to issue new and revised water quality standards for the state of Washington. The group argued that EPA acted arbitrarily and capriciously in denying its petition, and sought to have the denial vacated and the petition remand...

The Ninth Circuit remanded EPA's issuance of an NPDES general permit for concentrated animal feeding operations (CAFOs) in Idaho. Environmental groups challenged the permit, arguing it lacked sufficient monitoring provisions to ensure compliance with its discharge limitations. The court found that t...

A district court denied states' and industry groups' motion to stay an order vacating and remanding EPA's 2020 Clean Water Act Section 401 Certification Rule, which had limited the ability of states and Native American tribes to regulate water pollution. The states and groups moved to stay the order...