Renovation of a water / sewer project in Simi Valley, California. Conceptual plans call for the renovation of a water / sewer project.

This project proposes to install a new conveyance system to discharge effluent into the Arroyo Simi if the existing effluent discharge becomes submerged and inoperable during heavy rain events. The Climate Change Vulnerability Assessment and Management Plan that was prepared by a consultant, as a requirement of the WQCP's NPDES Discharge Permit, identified that the chlorine contact basin would be flooded if a storm event with a flood elevation greater than 658 feet were to occur. The FEMA 100-year base flood elevation (BFE) is 662 feet. The plan recommends installing an emergency bypass line that conveys water from the chlorine contact basin and discharges into the Arroyo Simi at the southwestern end of the property boundary. The design is expected to be completed in FY 2026-27 and construction is expected to be completed in FY 2029-30. The project is included in the City's 2026-2030 Capital Improvement Program (CIP). As of April 15, 2026, further details have not yet been identified. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.