Residents asked to conserve water in advance of south OC pipeline repair

SANTA ANA — Water district officials are asking residents and businesses in south Orange County today to conserve water while a major supply pipeline is repaired during an eight-day shutdown beginning June 8.

Officials from the Metropolitan Water District of Southern California, the Municipal Water District of Orange County and local water agencies made the precautionary water-saving request as Metropolitan prepares for the June 8-15 shutdown of the Allen-McColloch Pipeline.

The regional waterline serves communities from Yorba Linda south to San Clemente.

"Orange County consumers have done an excellent job responding to the request to save water to deal with the current water shortages from the State Water Project,'' said MWDOC General Manager Kevin Hunt. "This, however, is a critical repair coming during a typically warm period. We all need to continue to do our part and reduce water use while the repairs are made.''

Shutdowns are usually scheduled during the winter, when water demand is less, but a recent inspection of the Allen-McColloch line revealed sections that need immediate attention, said James Green, Metropolitan's manager of water system operations.

The 26-mile pipeline extends from the district's Robert B. Diemer Water Treatment Plant in Yorba Linda to El Toro Reservoir in Lake Forest, typically delivering up to 100 million gallons of water a day during the month of June for Orange County residents.

The line is the primary source of supplemental, imported water to south county communities served by MWDOC, which relies on Metropolitan supplies for about 50 percent of its water needs.

During the outage, Metropolitan will shut down the pipeline early on June 8 and drain portions of the high-pressure line. After excavating the repair sites, crews will cut away the weakened sections of pre-stressed concrete cylinder pipe and replace them with welded-steel pipe.

Customers are being asked to reduce outdoor watering and refrain from filling swimming pools or spas and hosing down driveways and sidewalks from June 8 until the pipeline repairs are complete.

Other water-saving measures include running only full loads in washing machines and dishwashers; not leaving the water running when washing dishes, brushing teeth or shaving; and keeping showers to five minutes.