Sonoma Water - Current Budget

Current Budget

Budget Overview

Sonoma Water is a special district founded in 1949, whose Board of Directors is composed of the same members as the Sonoma County Board of Supervisors. The key functions of Sonoma Water are Water Supply and Transmission; Flood Protection; and Wastewater Collection, Treatment and Reuse.

We strive to provide an open source of financial information for our stakeholders, with online access to our budget, financial reports, and Sonoma Water's Capital Projects Plan.

Finance and budgeting are handled by Sonoma Water's Financial Services Division. Fiscal services are provided to Sonoma Water by the Sonoma County Auditor-Controller-Treasurer-Tax Collector.

Water Transmission

Sonoma Water’s Fiscal Year Water Transmission Budget funds the ongoing maintenance of more than 100 miles of underground pipelines and supporting facilities. The system provides wholesale domestic water supply and delivery to more than 600,000 residents of Sonoma and Marin Counties through eight primary contractors (cities of Santa Rosa, Petaluma, Sonoma, Rohnert Park, Cotati, Town of Windsor, and Valley of the Moon and North Marin water districts), a major non-contractor customer (Marin Municipal Water District), and to other smaller customers. The budget also includes funding for environmental restoration efforts along the Russian River and Dry Creek, two major natural pipelines that help deliver water from Lake Sonoma to groundwater wells.

Current Water Transmission Budget FY 2025-26

Proposed Water Transmission Budget FY 2026-27

Sanitation

Sonoma Water currently operates and maintains eight wastewater collection, treatment, and/or reuse systems, which provides wastewater collection and treatment services to more than 22,000 residences and businesses throughout the county.

Current Sanitation Budgets FY 2025-26

2025 Written Basis of Sewer Service Charge

2025 Ordinances

Proposed Sanitation Budgets Fy2026-27

2026 Written Basis of Sewer Service Charge

Sanitation Rate Relief Program

The Districts and Zones offer a discount on Sewer Service Charges for low-income owner-occupied homes and for 501(c)(3) non-profit organizations that provide housing to low-income renters.

SonomaWater.org/SRRP