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December 2011
Subscribe to Your Water – Metropolitan's E–Newsletter.

Metropolitan's Shutdown Season

Repair work at the Allen-McColloch Pipeline

Each year between October and April, Metropolitan carries out its shutdown season, temporarily taking various facilities out of service for important maintenance and upgrade servicing. Metropolitan's ability to reliably store, treat and deliver water throughout its six-county service area, which covers about 5,200 square miles, requires treatment plants, pipelines and other essential facilities - some in service for more than 70 years - to be shut down for upkeep and improvements.

Colorado River Aqueduct Steel Liner Extension

This season, Metropolitan has 38 shutdowns planned. The scheduled outages range in length from a one-day shutdown of the Palos Verdes Feeder to replace a valve to a 30-day shutdown of the district's 242-mile Colorado River Aqueduct (CRA) in October-November. Another 20-day CRA shutdown is scheduled for next March.

Colorado River Aqueduct Shutdown 2011

The district routinely schedules shutdowns in the winter and early spring, when temperatures usually are cooler and demands are lower, to complete inspections and perform maintenance and upgrades with the least impact on consumers.


Map of Areas Affected by a Recent Shutdown

Most local agencies affected by an outage have groundwater, reservoir supplies and other sources to meet retail demands during the outage. However, on occasion - particularly when Metropolitan takes a regional water treatment plant or a large pipeline out of service - some local agencies need consumers to pitch in and conserve water to help stretch supplies. Voluntary conservation by consumers and businesses, combined with activation of system interconnections between water agencies, offer safeguards so residents and businesses have adequate water during a shutdown.

Weymouth Shutdown March 2011

Even as Metropolitan is in the midst of this year's shutdown season, the next round of planned outages are already being deliberated. Depending on the size and complexity of a facility, Metropolitan and its member agencies spend up to two years coordinating and planning numerous facility shutdowns. For example, the addition of new water treatment systems at Metropolitan's treatment plants requires a series of shutdowns at various plants over a number of years.

Tunnel Repair

Each plant shutdown requires up to two years of strategic planning and collaboration with Metropolitan's Member Agencies and their retail agencies. "These collaborative efforts and the enhanced conservation efforts by residents and businesses during the shutdowns are essential in order to complete the work without additional water service impacts," said Jim Green, manager of Water System Operations at Metropolitan.

Pipeline Repair




This newsletter is produced by:
The Metropolitan Water District of Southern California
700 N. Alameda St.
Los Angeles, CA 90012