Metropolitan Water District of Southern California
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March 20, 2007

WATER LIMITED IN ORANGE COUNTY
DURING CONSTRUCTION WORK AT LOCAL TREATMENT PLANT
Residents, businesses urged to aggressively conserve water during week-long facility shutdown

Residents and businesses throughout Orange County are being asked to aggressively reduce their water use while a major regional water treatment plant undergoes upgrades during a week-long shutdown beginning Sunday, March 25.

Officials from the Metropolitan Water District of Southern California and Municipal Water District of Orange County joined local water agencies in making the water-saving request as Metropolitan prepares for the planned shutdown of its Robert B. Diemer Water Treatment Plant, located in Yorba Linda, through Saturday, March 31.

Metropolitan’s Diemer plant is the primary source of imported treated drinking water to communities served by MWDOC, as well as the cities of Anaheim, Fullerton and Santa Ana.  The plant provides about 95 percent of south Orange County’s potable water needs via two regional water pipelines.

“Although some water agencies in south Orange County will institute mandatory restrictions during this shutdown, most agencies in north Orange County will have groundwater supplies to call upon to meet retail demands,” said Debra C. Man, Metropolitan’s chief operating officer.  “As a precaution, however, we’re asking all consumers in the region to voluntarily conserve water whenever and wherever possible.”

To minimize impacts on consumers, Metropolitan routinely schedules operational shutdowns of its water-treatment facilities during the winter months, when temperatures are typically cooler and demands are lower.

“All Orange County water providers have prepared for months to ensure their customers have sufficient supplies during this planned shutdown,” said Kevin P. Hunt, general manager of the Municipal Water District of Orange County, which manages the water supply the county receives from Metropolitan.

"However, we are asking residents and businesses to help us in our effort to maximize the amount of water we have on-hand while the Diemer plant is out of service,” he continued.

Curtailing landscape irrigation, which consumes approximately 60 percent of all water used in Orange County, is perhaps the easiest way to conserve throughout the week, Hunt said. Other outdoor water-saving practices include sweeping down driveways and walkways.

The Diemer plant shutdown is part of $155 million in construction under way at the facility to improve the plant’s treatment processes and modify chemical handling capabilities, said Eddie Rigdon, Metropolitan’s water system operations manager.  Projects include site work and relocation of existing facilities in preparation for adding a new ozone disinfection system.  Work at the plant is expected to continue through 2011.

“Maintaining and improving our ability to store, process and deliver drinking water throughout Southern California requires periodic curtailments in deliveries while the work is being done,” Rigdon said.
         
MWDOC’s Hunt said voluntary water conservation by consumers, combined with activation of system interconnections between water agencies, will offer added safeguards to help ensure that residents and businesses have adequate water during the shutdown.  The cooperating agencies, however, stand prepared to intensify the conservation request should locally stored supplies dwindle during the outage.

For more water-saving tips visit www.bewaterwise.com.  Information about special water-savings rebates available to Orange County residents and businesses is available on www.mwdoc.com.  Click on Rebate Programs.

The Metropolitan Water District of Southern California is a cooperative of 26 cities and water agencies serving 18 million people in six counties. The district imports water from the Colorado River and Northern California to supplement local supplies, and helps its members to develop increased water conservation, recycling, storage, and other resource-management programs.

Page updated: July 26, 2007