A local environmental group looking to protect the Delta is sponsoring two free screenings of the movie "Over Troubled Water" in East Contra Costa next week.

Restore the Delta, a nonprofit organization looking to return the Sacramento-San Joaquin Delta to health, is showing the movie 7 p.m. Tuesday at Antioch's El Campanil Theater, 604 W. Second St. It will also be shown 10:30 a.m. Oct. 6 at Brentwood's Delta Cinema, 641 First St.

Group officials say the documentary was designed to educate the public about opposition the peripheral canal -- a state proposal to run tunnels underneath the Delta to divert water to Southern California -- and encourage smarter water policies.

The 45-minute film is narrated by Ed Begley Jr.

Admission is free for both showing, but is first-come, first-served.

A panel will be at the screening for a question-and-answer session following both meetings.