The EPA has denied a petition by Food and Water Watch and kindred environmental advocacy groups relating to the regulation of release of ammonia from concentrated feeding operations under the Clean Air Act.

Based on the issues raised, the Environmental Protection Agency will evaluate potential pollution from CAFOs during 2024.  Should investigations result in new regulations, these will be submitted for public comment.  Any major changes will inevitably be subject to litigation and will delay any major changes under either the Clean Air Act or the Clean Water Act.