Metropolitan Water District of Southern California
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Spotlight On Water
Water Highlights

Annual Report

Annual Report 2014
Click here for Metropolitan’s Annual Report.

SB60 Report

Regional Progress Report
Metropolitan’s annual report to the State Legislature (SB 60) on water resource management programs.  Click here to read report.

Annual Water Quality Report 2014

Annual Water Quality Report 2014
Click here for Metropolitan’s Annual Water Quality Report.

Notice to Potentially Affected Public Agencies

Notice to Potentially Affected Public Agencies
Metropolitan’s notification of treatments to control nuisance algae blooms may occur at the following water supply reservoirs: Lake Skinner, Lake Mathews, and Diamond Valley Lake. Click here to read the notice.

Water Plans and Other Reports

Integrated Resources Plan Update

Water Tomorrow
"Water Tomorrow," Metropolitan's long-term integrated water resources plan, establishes the goals for a diverse water portfolio - both water supply and conservation – to serve the region’s future water needs. Click here for more information.

Regional Urban Water Management Plan

Regional Urban Water Management Plan (RUWMP) 2010
The information included in the 2010 RUWMP represents the most current available planning projections of supply capability and demand developed through a collaborative process with the member agencies through the Integrated Water Resources Plan Update. The document was prepared in compliance with the Water Code Sections of the Urban Water Management Planning Act.


Water Surplus and Drought Management Plan (WSDM)
The WSDM plan is a ten-year plan that will be used to direct Metropolitan's resource operations to help attain the region's 100% reliability goal. Click here for more information.

Blue Ribbon Committee

Blue Ribbon Committee Finalizes Report
The Blue Ribbon Committee provided Metropolitan with its report analyzing water challenges for the next 50 years. MWD’s Board of Directors will review the findings.  Click here for more information.

treatment process
Diemer treatment plant
Jensen treatment plant
Mills treatment plant
Skinner treatment plant
Weymouth plant
Water Glossary
water & your health
Water Supply Conditions

The Metropolitan Water District imports water primarily from two sources, the Colorado River via the Colorado River Aqueduct and the State Water Project via the California Aqueduct.  Click here to view a snapshot of key reservoir storage levels, precipitation and snowpack data that collectively serve as an indicator of Metropolitan’s water supply conditions for these imported supplies.  Local hydrologic information is also provided. 

State Water Project

Colorado River


Metropolitan Fact Sheets
Informational sheets available as downloadable pdfs.

Your Water From Source to Tap
Get the facts on what it takes to bring your water to your home.

Page updated: April 28, 2015