Our Water Reuse System
Santa Rosa Regional Water Reuse System is comprised of the Laguna Treatment Plant, Water Reuse Operations and Biosolids Distribution System and serves approximately 230,000 residents in Santa Rosa, Rohnert Park, Cotati, Sebastopol, and unincorporated portions of Sonoma County.
The hub of the Water Reuse System is the Laguna Treatment Plant, which cleans sewage from homes and businesses throughout the region so that it can be reused safely with beneficial outcomes. The Plant recycles approximately 7 billion gallons of wastewater each year. During dry to normal water years, nearly 100% of the tertiary treated recycled water is beneficially reused.
Our state accredited environmental laboratory, located at the Plant, analyzes drinking water, sewage, and industrial waste to ensure compliance with applicable federal, state and local regulations, public health and protection of the Laguna de Santa Rosa watershed.