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Water Agency

Working Today for Water Tomorrow

The mission of the Sonoma County Water Agency is to effectively manage the water resources in our care for the benefit of people and the environment through resource and environmental stewardship, technical innovation, and responsible fiscal management.

The Sonoma County Water Agency is a regional leader in water resources management. The Water Agency strives to look forward, beyond today's issues, to anticipate ways to advance its mission. Additionally, the Water Agency continues to adapt its mission in response to changing opportunities, keeping the Water Agency at the forefront of developments in the water industry.

The Water Agency was created as a special district in 1949 by the California Legislature to provide flood protection and water supply services. Legislation enacted in 1995 added the treatment and disposal of wastewater to the Water Agency's responsibilities. The Sonoma County Board of Supervisors acts as the Water Agency's Board of Directors. The Water Agency is a separate legal entity created by State law, having specific limited purposes and powers, and separate sources of funding.

  • Published on November 6, 2017

    Community meetings are planned on November 14 in Petaluma and November 15 in Sonoma to receive input on a storm water resources plan for the Petaluma River and Sonoma Creek watersheds that will identify projects that utilize storm water from heavy rainfall for beneficial uses, such as flood protection, recharge of groundwater, slowing erosion from hillsides, and improving water quality in creeks and streams.

  • Published on October 2, 2017

    The Sonoma County Water Agency (SCWA), which operates the Occidental County Sanitation District’s (OCSD) Wastewater Treatment Facility, has released an environmental analysis of a proposed project to transport the OCSD’s wastewater to the Airport-Larkfield-Wikiup Sanitation Zone wastewater treatment plant. The 30-day public comment period opened on September 29, 2017.

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Meet the Water Agency General Manager

Grant Davis
Grant Davis
General Manager

Grant Davis, as the General Manager of the Sonoma County Water Agency, is responsible for management activities related to the Water Agency’s core functions of water delivery, wastewater management, flood protection, and environmental sustainability. Prior to joining the Agency, Mr. Davis was Executive Director of The Bay Institute, a science-based nonprofit, dedicated to protecting the San Francisco Bay-Delta Watershed and improving water management in California.

Mr. Davis also worked for Congresswoman Lynn Woolsey and was an aide to State Senator Milton Marks of San Francisco and to Assemblywoman Lucy Killea of San Diego. Davis also operated a successful small business, specializing in strategic planning, public relations and campaign management. Mr. Davis is a board member of the California Utility Executives and Managers Association, Water Reuse California, and the Bay Planning Coalition. He received his BA in political science from the University of California at Berkeley.


Current Water Supply Levels

View current water supply levels in Lake Sonoma and Lake Mendocino as well as current Russian River flows.

Water Supply

Sonoma County Water Agency provides high quality drinking water to over 600,000 people in Sonoma and northern Marin Counties.

Carbon Free Water by 2015

The Sonoma County Water Agency has a duty to secure water for future generations of Sonoma County residents. The potential impacts of climate change will make it more difficult to meet that mission.

Flood Protection

The Sonoma County Water agency is responsible for maintaining over 75 miles of streams throughout Sonoma County, and has numerous facilities to help reduce the risk of flooding.


The Sonoma County Water Agency manages and operates eight different sanitation districts and zones throughout Sonoma County. High-quality tertiary treated recycled water is an important source of water and its use offsets potable water demands.

Contact Information

404 Aviation Boulevard
Santa Rosa, CA 95403
38.51193, -122.7835

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