Special Districts Week September 22-28

MPWD Commemorates Civic Engagement with Local Governments.

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FREE Mini Hands-on Workshop October 29

Learn how to select the right water-efficient plants for your garden. Hosted at MPWD.

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2019 Water Main Project Updates

MPWD provides weekly updates on possible traffic impacts in your neighborhood due to capital improvement projects.

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The Waterline Newsletter is Here!

The latest issue celebrates MPWD's 90th anniversary and contains important updates on the 5-year Capital Improvement Project

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2018 Water Quality Report is Here!

Watch your mailboxes for the Consumer Confidence Report or download here!

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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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2019 National Night Out

MPWD draws a crowd at annual Belmont community event.

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Questions About Your Water?

​Taste, Odor, or Discolored Water Issue?

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MPWD Celebrates 90 Years of Service

Thanks customers for the privilege of serving the community since 1929.

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Transparency Certificate of Excellence Awarded to MPWD

MPWD received the District Transparency Certificate of Excellence by the Special District Leadership Foundation (SDLF).

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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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Next Meeting

September 26

Serving You Since 1929

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. To learn more about MPWD, click here.

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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In coordination with the City of Belmont's permitting process, the Mid-Peninsula Water District (MPWD) reviews customer landscape plans regarding commercial and residential new development / construction, remodels, or additions on all lot sizes in excess of 1,000 sq. ft. in compliance with its Water Efficient Landscape Ordinance (WELO).

Click here for the Outdoor Landscape Submittal Instructions

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. www.greenbiz.ca.gov.

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 jeanettek@midpeninsulawater.org or 650-591-8941.

Board of Directors Meeting - Open to the Public


HOLIDAY: Columbus Day


Board of Directors Meeting - Open to the Public


HOLIDAY: Veteran's Day


Board of Directors Meeting - Open to the Public


HOLIDAY: Thanksgiving


HOLIDAY: Thanksgiving (Day After)


Board of Directors Meeting - Open to the Public


HOLIDAY: Christmas Eve Day


HOLIDAY: Christmas Day


HOLIDAY: 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 added a section to the California Public Records Act requiring local agencies to create a catalog of Enterprise System with annual updates.

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Public Records Act

The Public Records Act was enacted in 1968 and is a component of California’s commitment to open government. MPWD shares that commitment. Section 6253 of the Government Code provides that every person has a right to inspect any public record except those specifically exempted by law.

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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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