EPA and the Army Corps of Engineers (the Corps) issued a prepublication version of a proposed rule that will rescind prior 2015 revisions to the definition of “waters of the U.S.” under the Clean Water Act (CWA), pending the issuance of a more substantive rulemaking that reevaluates the definition.  The prior revisions expanded federal jurisdiction over certain waters and prompted numerous judicial challenges and a subsequent nationwide stay of the rule.
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