Mesa Water District (Mesa Water®) is dedicated to providing you 100% clean, safe, and reliable water. As we work together to soon reopen our community, we encourage business and property owners whose facilities have remained unoccupied to prepare their facilities for returning staff by flushing their internal water system prior to occupancy. 

Serving clean, safe, and reliable tap water continues to be Mesa Water District’s top priority as an essential public service provider.

Mesa Water delivers water of the highest quality and meets all stringent State and Federal drinking water regulations. This is detailed in the 2020 Water Quality Report, available starting July 1, at MesaWater.org/WaterQualityReport, and in print by request. For questions about this report, contact Kaying Lee, Water Quality & Compliance Supervisor at 949-207-5491.

Register today for Mesa Water’s online billing service, offering more ways to view and pay your bill, including the convenient AutoPay feature. Visit MesaWater.org/billpay. For assistance, contact Customer Services at 949.631.1200, Monday - Thursday 7:30 a.m. - 5 p.m., and Friday 8 a.m. - 5 p.m.

For the past 60 years, Mesa Water District (Mesa Water®) has provided 100% clean, safe, and reliable water to its customers. In the early days, Mesa Water relied completely on imported water from Northern California and the Colorado River Basin. Today, groundwater supplies are Mesa Water’s primary source of drinking water. But where exactly does our water come from?

 Serving clean, safe and reliable tap water continues to be Mesa Water District’s top priority as an essential public service provider. As always, Mesa Water remains steadfast in our mission—Dedicated to Satisfying our Community’s Water Needs. As such, we wish to highlight this important information:

Mesa Water’s Lobby is closed to the public, however, staff is here to help!


This winter, Mesa Water hosted a series of Neighborhood Chats that encouraged residents throughout Costa Mesa to have an informative discussion with our Board of Directors about all things Mesa Water.


Public water agencies are required to provide to their customers annual Consumer Confidence Reports (CCRs) - also known as Water Quality Report - that detail local water quality information.

  1. Conservation Corner: “Spring” into Water-Wise Gardening!


    With the change in seasons upon us, here are some springtime tips to help you maximize your water efficiency:

  2. Mesa Water Supports CMHS 2020 Solar Cup


    Costa Mesa High School's Event is the Nation's Largest Student-Based Solar Boat Race.

  3. Key Milestones in Mesa Water History

    From its early roots when our community’s water came from natural underground springs via artesian wells, to the present, where we provide clean, safe water to more than 110,000 residents, M…

  4. Then & Now: A Look Back at the Past 60 Years

    Mesa Water has been, and continues to be, dedicated to providing you with safe and reliable water. Take a look at how we’ve grown to ensure we meet our community’s water needs. …

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