Our Goals:

Provide public outreach on a continuing basis in order to keep our customers educated and informed about the District's activities and services.
Always seek opportunities to augment the District's water supply for improved reliability and reduced costs without sacrificing water quality.
Ensure that the District's water system is adequately sized, maintained and improved in order to provide water service to not only existing but future customers.
In all contacts with the public, employees shall (1) strive to be accurate and (2) be courteous and professional.
Play an active role in the community through the Chamber of Commerce and community events.
Seek opportunities to work jointly with neighboring businesses and agencies to provide improved or lower cost services.
Diablo Water District - Providing a Safe, Dependable and Adequate Supply of High Quality Water for Residences and Businesses
Site Map
24/7 Emergency Service
For Major Leaks and Other Urgent Water Issues Please Call (925) 625-3798
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Open Monday - Friday
8:00 a.m. - 12:00 p.m.
1:00 p.m. - 5:00 p.m.
Closed 12:00 p.m. - 1:00 p.m.
87 Carol Lane, Oakley, CA
Phone: (925) 625-3798
Fax: (925) 625-0814
Mail: P.O. Box 127
  Oakley, CA 94561-0127
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Sustainable Groundwater Management

The State Sustainable Groundwater Management Act (SGMA). Recognizing the importance of groundwater and the consequences of overuse, a package of bills addressing the sustainable management of groundwater in California was approved. Collectively, these bills are the Sustainable Groundwater Management Act (SGMA).

Our Local Groundwater Basin is known as the Tracy Subbasin. It stretches from Antioch and Bethel Island, through Oakley, Brentwood, Knightsen, down through Discovery Bay, Portions of San Joaquin County and the City of Tracy. Groundwater from the Subbasin is a vital component of our water supply, along with water from the San Joaquin and Sacramento Rivers that reaches us through the Delta.

SGMA took effect on January 1, 2015, and requires all groundwater basins designated as medium or high priority by the Department of Water Resources to be sustainably managed by the year 2042. The Department of Water Resources' designated the Tracy Subbasin as medium priority based on several factors, including population, number of wells, irrigated area, and groundwater conditions.

Collaborative Groundwater Management Planning in the Tracy Subbasin. To ensure long-term sustainability of the groundwater basin, the District has formed a Groundwater Sustainability Agency (GSA). The District’s GSA is collaborating with GSAs formed by other water suppliers within the Subbasin to create a joint Groundwater Sustainability Plan (GSP). The GSP will be in compliance SGMA.

The GSP will be in compliance with SGMA. To learn more about the Sustainable Groundwater Management Planning for the Tracy Subbasin, please see the dedicated website for it at https://www.eccc-irwm.org/sgma.html