Collection System Renovation Projects

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Project-specific information such as descriptions, maps, and contacts can be found here.

LAFAYETTE SEWER RENOVATION PROJECT, PHASE 15

Project Description The Lafayette Sewer Renovation Project will replace approximately 1.8 miles of sewers at various locations around Lafayette.

Project Status In Construction

Construction Schedule March 2025 – November 2025

Point of Contact Chris Carpenter, (925) 229-7200 For construction impacts & general project information. (Contractors/bidders visit the Business Construction page for project information.)

PLEASANT HILL SEWER RENOVATION PROJECT, PHASE 3

Project Description The Pleasant Hill Sewer Renovation, Phase 3, will replace approximately 1.8 miles of sewers, primarily in the Gregory Gardens neighborhood.

Project Status In Construction

Construction Schedule March 2025 – January 2026

Point of Contact Chris Carpenter, (925) 229-7200 For construction impacts & general project information. (Contractors/bidders visit the Business Construction page for project information.)

39-INCH MAIN TRUNK NO. 1 RENOVATION

Project Description This Project will install approximately 4000 LF of sewers in Pacheco, which will allow future abandonment/removal of the portion of Main Trunk No. 1 from Buchanan Golf Course to Central San’s wastewater treatment plant.

Project Status Pre-Construction

Construction Schedule June 2025 – December 2025