The Allegheny County Sanitary Authority is cleared to proceed with a $2 billion plan for reducing storm water and sewage overflows now that it has court approval of a related consent decree with federal and state environmental officials.

Alcosan on Friday announced the U.S. District Court approval of the modified consent decree, which replaces a 2008 version.

“I’m pleased that the court and the plaintiffs agreed with our approach for improving the water quality of our rivers and streams, and we are all excited to continue forward with that important goal,” Alcosan Executive Director Arletta Scott Williams said in the announcement.

Alcosan’s Clean Water Plan proposes measures for reducing 7 billion gallons of overflows into local waterways. The new consent decree extends the target for achieving that goal from 2026 to 2036.