Board Meeting Cancellation

The October 25 Regular Board Meeting has been canceled. The next regular Board Meeting is November 14.

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NEW! Request for Proposals

Structural Engineering Design Services for Dekoven Tanks Replacement with Questions and Responses.

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2017 Consumer Confidence Report is Here

From Source to You! MPWD delivers its annual water quality report.

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Pay Your Bill Online

Register your account with our new, easier-to-use customer portal. Pay your bill today with convenience and confidence.

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2018 National Night Out

MPWD enjoys a fun night out with the Belmont community.

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Notice of Determination of Appropriations Limit for 2018-19

Now available!

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Spring Workshop Brings Family Fun

An afternoon at the library with bugs and books

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MPWD and Belmont Enter Joint Project Agreement

Officials Cite Efficient Use of Public Resources As One of Many Benefits to Residents

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Local Youth Robotics Team Presents Research Project to MPWD

Four-member Team Integrates Robotics Competition With Water Conservation

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MPWD Customer Connect

The Mid-Peninsula Water District is dedicated to tailoring our communications to customer needs. Now, you can register for MPWD’s New Customer Connect program to receive flash news alerts via text or email, e-newsletters, and participate in surveys. Subscribe today and receive an opportunity for a free MPWD bonus gift!

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Board of Directors Meetings

The MPWD Board of Directors regularly meet the 4th Thursday of each month at 6:30pm at 3 Dairy Lane in Belmont.

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Serving You Since 1929

mid peninsula water district

The Mid-Peninsula Water District (MPWD), formerly Belmont County Water District, was formed in 1929 from the physical plant of seven independent systems, including the Spring Valley Water Company, which were united and began functioning as a public utility in 1930.

The mission of MPWD is to deliver a safe, high-quality, reliable supply of water for current and future generations in a cost-effective, environmentally-sensitive, and efficient manner.

Our major water source originates from spring snowmelt flowing down the Tuolumne River to storage in Hetch Hetchy Reservoir. The pristine, well protected Sierra water source is exempt from filtration requirements by the United States Environmental Protection Agency (USEPA) and State Water Resources Control Board’s Division of Drinking Water (SWRCB). Water treatment provided by the SFRWS, including disinfection by ultraviolet light and chlorine, corrosion control by adjustment of the water pH value, fluoridation for dental health protection, and chloramination for maintaining disinfectant residual and minimizing disinfection byproduct formation, is in place to meet the drinking water regulatory requirements.

The Hetch Hetchy water is supplemented with surface water from two local watersheds. Rainfall and runoff from the 35,000-acre Alameda Watershed in Alameda and Santa Clara counties are collected in the Calaveras and San Antonio reservoirs, and delivered to the Sunol Valley Water Treatment Plant (SVWTP). Rainfall and runoff from the 23,000-acre Peninsula Watershed in San Mateo County are stored in the Crystal Springs, San Andreas, and Pilarcitos reservoirs, and delivered to the Harry Tracy Water Treatment Plant.

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mid peninsula water district

As a certified Bay Area Green Business, the Mid-Peninsula Water District (MPWD) is dedicated to implementing sustainable practices to conserve energy and resources, minimize waste and our carbon footprint, and promoting conservation efforts in the community. For more information about the Bay Area Green Business Program, please visit.

mid peninsula water district

The Mid-Peninsula Water District (MPWD) is involved in outreach to local community schools to promote awareness of water and resources usage. Our centerpiece “Water Awareness Calendar” poster contest is conducted each year in collaboration with local elementary schools that involves 3rd to 5th graders. MPWD also hosts field trips from local schools and is expanding its School Education program to reach out further to the local school community in 2018.

For more information about MPWD School Education Programs, please contact Administrative Specialist Jeanette Kalabolas at or 650-591-8941.



Thanksgiving (Day After)


Board of Directors Meeting - Open to the Public


Christmas Eve Day


Christmas Day


New Year's Eve


Water Conservation

Water Saving Tips, Rebate Programs, Landscaping, and more!

Hands-On Workshops

Our free workshops are designed to help you optimize your landscape skills.

Our Community

MPWD is dedicated to reaching out to our community and developing relationships.

Capital Improvement Program

MPWD has embarked on a 5-year CIP to upgrade existing water infrastructure so as to fulfill our mission to provide a safe, high-quality, reliable supply of water for current and future generations. Read More!

Catalog of Enterprise Systems

CA Senate Bill 272 Compliance
Approved on October 11, 2015, SB 272 adds a section to the California Public Records act requiring local agencies to create a catalog of Enterprise System by July 1, 2016 with annual updates.

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District Office

(650) 591-8941
3 Dairy Lane, Belmont, CA 94002
Monday-Friday, 8:00am - 4:30pm
Except for observed holidays.

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