Welcome to South San Joaquin Irrigation District

In 1909, the South San Joaquin Irrigation District was established to provide a reliable and economical source of irrigation water for agricultural use in, and surrounding rural areas of Escalon, Manteca and Ripon. SSJID’s historic water rights allow for several hydroelectric power plants on a series of dams and reservoirs on the Stanislaus River. SSJID and Oakdale Irrigation District completed the original Melones Reservoir in 1926, and have co-owned the Tri-Dam Project, consisting of Donnells, Beardsley and Tulloch reservoirs and powerhouses since 1957. In 2005, as unprecedented urban growth replaced agricultural land, the District expanded into providing domestic water service to South San Joaquin County cities with its state-of-the-art membrane filtration water treatment plant. In 2009, SSJID completed a 1.4 megawatt solar farm that provides nearly all of the electricity to run its water treatment plant, and the District passes on a 15% savings on power costs to the cities who participate in the treatment plant. For several years, the District has been moving towards providing retail electric service as well, aiming to cut electric bills of those in its service territory by 15% across the board.

Our Mission

“SSJID provides the utmost value for its agricultural, urban, and business community by protecting and delivering vital resources with exceptional service.”

Our Vision

“As a premier organization, South San Joaquin Irrigation District is passionately focused on delivering high quality water and power that are integral to the communities we serve, while leading in innovation and sustaining a deep respect for our history, our employees, and our environment.”

Proposition 218 Hearing for the Division 9 Service Rates

During the Board Meeting on January 12, 2021 at 9:00 A.M., the SSJID Board of Directors will hold a Proposition 218 public hearing to hear public comments and receive written protests for the proposed increase in the Division 9 Project pressurized water service charge. Protests must be received prior to close of the public hearing. Protests may be hand-delivered the day of the hearing to the Dropbox located outside the main office at 11011 E. Highway 120, Manteca, CA 95336. Protest instructions are contained in the hearing notice. You may also attend the virtual Board Meeting to make public comments, but comments will not be counted as protests. Please click the VIEW MEETINGS ONLINE link to access the Zoom meeting.