A state court preliminarily enjoined the New Hampshire Department of Environmental Services (DES) from enforcing new rules that tightened allowable limits of per- and polyfluoroalkyl substances (PFAS) in the state's drinking water and groundwater. A chemical manufacturing company argued that DES vio...

A district court held that environmental groups lacked standing in their challenge to EPA's exclusion of certain waste treatment systems from the definition of navigable waters under the CWA. The groups argued that they had representational standing to challenge the exclusion, relying on declaration...