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Safeguarding Drinking Water Quality for Southern California.

Our Mission

The mission of the Metropolitan Water District of Southern California is to provide its service area with adequate and reliable supplies of high-quality water to meet present and future needs in an environmentally and economically responsible way.



19 million


1.5 billion






$1.6 billion

Photo of One Water Awards on a table.

One Water Awards

Celebrating Remarkable
Water Savers

The future of water efficiency took center stage in May, as Metropolitan’s second annual One Water Awards honored four remarkably innovative water-saving projects and the water agencies, businesses, and people behind them.

The significant improvements to water management operations and equipment were partly funded by Metropolitan’s Water Savings Incentive Program and Turf Replacement Program. Together, this commitment to water conservation will save Southern California more than 200 million gallons of water annually.   

Read our press release.

Photo of the Coast Live Oak Tree

Tree Rebate

New Rebate for Trees:
Supporting Our Turf Replacement Program

Trees are nature’s superheroes. Metropolitan’s new tree rebate recognizes the invaluable role they play in maintaining healthy and resilient urban environments. Trees act as natural air purifiers, and their leaves and branches provide cool refuge with much-needed shade. That’s why Southern California residents can now receive a $100 rebate per tree for up to five trees planted while they replace thirsty grass with a more sustainable and water-efficient landscape.  

Photo of a Coast Live Oak Tree.

Outside view of our Water Quality Laboratory

Ensuring Water Quality

Water Quality Laboratory:
Highlighting Our Talented Staff

Just who are the people behind-the-scenes at Metropolitan providing award-winning drinking water for our six counties? They are the ones who run thousands of tests every year using the latest and best technology at Metropolitan’s renowned Water Quality Laboratory in La Verne.

The lab was established 50 years ago, the same year the Safe Drinking Water Act launched. This dedicated and highly skilled staff – about 100 employees who handle a wide range of assignments and initiatives – are all focused on the same mission. They safeguard the quality of drinking water we provide to our 26 member agencies and the communities they serve. As we recognize the anniversary of the lab, let’s look at some of our many talented water quality staff in action. 

Front cover of our Leadership Today Water Tomorrow 2024 report

Leadership Today

Leadership Today
Water Tomorrow

It’s fitting that concentric circles are the cover design motif for Metropolitan’s latest publication, Leadership Today, Water Tomorrow. Concentric circles have a common center and run parallel. Metropolitan’s common core is providing reliable and safe water to Southern California in an environmentally and economically responsible way. The way we do that has many layers.

Learn more about our latest initiatives and accomplishments.


Current Events___


Metropolitan's Board Room

July 2024

Board Meetings
& Agendas.

High desert Water Bank

Met Reflects

Year in Review.

Photo of Intake Tower at Diamond Valley Lake.

Planning for the Future

Climate Adaptation Master Plan for Water.

Take a Tour___

From Source
To Tap.

Follow the extraordinary journey your water must take before you use it, from sources high in the Rockies and the Sierra Nevada, through critical purification processes, to homes and businesses across Southern California.

Workforce Investment___

the Way.

Supplying 40 percent of California’s water resources requires a workforce that is as agile and efficient as the water delivery systems we develop and operate. Succession planning, diversity, and asset retention are vital areas of focus that are key to the success of our organization.

An animation about the Metropolitan's workforce. Their workforce includes 1782 employees, of which 28% were women and 58% were people of color as of 2023. The workforce is composed of 35% professionals, 25% skilled craft workers, 18% office and administration, and 12% technicians. The average years of service at Metropolitan is 10 years, with 36% of staff having over 14 years of service.

Strategic Priorities___

Pathway to
the Future.

With a focus on areas of change and opportunity, Metropolitan - in an inclusive process - identified five strategic priorities that form an action-based framework for our approach to transformation. They support long-term stability and are attuned to the challenges of climate change, responsibilities to the public and our workforce, the importance of a sound business plan and continued collaboration with the communities we serve.

Learning to Conserve___


Supporting Sustainability Through Conservation.

Southern Californians get it. They know our water resources are not limitless. They’ve learned to conserve. And they know they can do more. That is where Metropolitan comes in. We offer water-saving tips, classes, and rebates for water-saving devices and sustainable landscaping. We are your partner as you learn how to make conservation a way of life.

Photo of a drought-tolerant garden with a planter in the middle of the garden path.

Professional Opportunities___

with Met.

Two backhoes in the bed of the Colorado River Aqueduct during a shutdown of the aqueduct for repairs

Work with Us

& Vendors.

Metropolitan's booth at the Calcon Tradeshow as two booth attendants are conversing with tradeshow attendees

Get Involved

Small Business

A construction worker giving a thumbs up while working on a tunnel cleaning project

Join Us

& More.