An urgent warning has been issued for residents near the lower Russian River, urging them to stay away due to a recent spill of untreated wastewater. The incident occurred during a storm that caused significant flooding across Sonoma County. The spill originated from a sewage treatment plant in Guerneville, where heavy rainfall led to the overflow of storage ponds early Tuesday morning. This resulted in an unknown volume of untreated wastewater, including raw sewage, entering the river.
Stuart Tiffen, a spokesman for Sonoma Water, which operates the Russian River Treatment Plant, described the situation as an ongoing challenge. He explained that the plant's capacity was overwhelmed, as it received flows at a rate of four million gallons per day during the heavy rainfall, far exceeding its dry-season capacity of 710,000 gallons per day. The Russian River itself was flowing at an unusually high rate, with measurements at the Hacienda Bridge in Forestville showing a flow rate exceeding 13.4 million gallons per minute.
The spill has prompted a coordinated response from multiple agencies, including the Sonoma County Sheriff's Office and environmental and public health departments. Residents in the affected area were alerted on Tuesday morning, and officials have advised people to avoid contact with the water and reduce wastewater usage. While a cleanup timeline has not been provided, environmental specialists are assessing the conditions and potential environmental impacts.
This is not the first time Sonoma Water has faced such an incident. In March 2024, a power outage at the treatment facility resulted in a spill of over 200,000 gallons of partially treated water. Additionally, the region has a history of similar issues, including a sewer main break in the Vacation Beach area of Guerneville three years prior and another pipeline break in 2014. Residents are encouraged to stay informed and follow the instructions of local authorities to ensure their safety and minimize the environmental impact of these spills.
