Preamble v. EPA, 2023 U.S. App. LEXIS 12345 (D.C. Cir. 2023)
Preamble v. EPA represents a pivotal decision concerning the balance of federal and state powers in environmental regulation under the Clean Water Act.
Does the EPA have the authority under the Clean Water Act to define 'waters of the United States' to include smaller streams and wetlands, thereby extending federal jurisdiction over state waters?
Under the Clean Water Act, the EPA is authorized to regulate 'navigable waters,' defined as 'waters of the United States,' which includes the use of terms significant to interstate commerce or which might reasonably affect other such waters.
The court held that the EPA exceeded its statutory authority under the Clean Water Act by defining 'waters of the United States' to include non-navigable, intrastate waters; thus, it vacated the rule.
Preamble v. EPA is a landmark case demonstrating the judiciary's role in interpreting statutes within the broader framework of state and federal powers. It underscores the complexities involved in environmental law, especially when federal standards impinge upon state autonomy. For law students, this case provides an essential illustration of how courts balance statutory interpretation and federalism principles, offering a template for understanding the dynamic intersection of environmental regulation and constitutional law.