![](https://appvoices.org/images/uploads/2023/04/Major-win-for-clean-water-in-West-Virginia-150x150.png)
Today, a unanimous panel of the U.S. Court of Appeals for the 4th Circuit vacated the West Virginia Department of Environmental Protection’s Clean Water Act § 401 certification for the Mountain Valley Pipeline, finding that the agency’s justification behind its conclusion that the pipeline would not violate the state’s water quality standards was deficient.