Sewer Collection System

Public Works Crews sewer maintenance
The City of Rohnert Park's sewer system has two primary functions which are to first collect the City's wastewater and then to transport it the Subregional Water Reclamation System of Santa Rosa for treatment.

The City's sanitary sewer system facilities include 83 miles of gravity sewers, 7.5 miles of force mains, 16 inverted siphons, and three pump stations. From the pump stations the wastewater directed to the Santa Rosa Subregional treatment facility on Llano road.

During a 24-hour period the amount of wastewater entering the system fluctuates from 1 to 7 million gallons per day. The average dry weather wastewater flows are 3.5 MGD (million gallons per day), and up to 15 MGD during winter months.

To view the City's updated Sewer System Management Plan adopted by the City Council on August 12, 2014, click here.