While media attention has focused on the David versus Goliath storyline, the ruling will impact a wide range of parties—including the largest corporations in disputes with the EPA.

In a much-anticipated decision, a unanimous Supreme Court has decided that parties subject to administrative compliance orders (ACOs) under the Clean Water Act may seek judicial review without waiting for enforcement action by the federal Envionmental Protection Agency. In Sackett v. EPA (March 21, 2012), the Supreme Court held that two Idaho homeowners could use the Administrative Procedure Act (APA) to mount a judicial challenge to an ACO.