Airport/Larkfield/Wikiup Sanitation Zone

    About the District

    • Began Operation:1983
    • Service area: 2,100 acres
    • Service recipients: 3,464 Equivalent Single-Family Dwelling
    • Treatment level: Tertiary
    • Design capacity: 900,000 gallons per day (average daily dry weather flow)
    • Discharge: All of the recycled water is used for irrigation.
    • Board of Directors:  The Water Agency's Board of Directors act as the District's Board.

    Newsletter and Proposition 218 Notice


    Budget Information

    Contact Information

    Billing/Financial Questions: Manuel Olvera, 707-521-6215 or

    General Questions: Brad Sherwood, 707-547-1927 or