The U.S. Environmental Protection Agency (EPA) and U.S. Army Corps of Engineers released their final Clean Water Rule this week, clarifying which streams and wetlands are protected from pollution and development under the Clean Water Act.
Included under the new rule are seasonal and rain-dependent streams that may only flow during certain times of the year, but which have a significant connection to downstream waters that were previously protected. Wetlands and waterways that border larger waterbodies will also be covered. According to the EPA, the rule will help protect the drinking water of nearly 117 million people.
“For the water in the rivers and lakes in our communities that flow to our drinking water to be clean, the streams and wetlands that feed them need to be clean too,” said EPA Administrator Gina McCarthy in a release.
Two complex Supreme Court decisions led to nearly a decade of confusion over just which waters are covered by the Clean Water Act. While the new rule clarifies which waterways are now protected, it does not expand the scope of the Clean Water Act, and it preserves existing exemptions for irrigation ponds, drainage ditches and other agricultural activities.