Project Overview

The Construction Zone
During Construction, Dig Los Osos provided direct access to regular construction updates for the pipeline installation portions of the Los Osos Wastewater Collection System construction project. Work began in October 2012 and was generally complete in June 2014.

The work of building the collection system was divided into three construction contracts. The pipeline installation contracts impacted almost every street and residence in town. The work was completed concurrently at multiple locations within Los Osos over a 20-month construction period. Work continued on the Pump Stations contract, but at a few individual locations with minimal traffic and residential impacts.

Water Conservation Program
The County is currently implementing a water conservation program, which includes rebates for water saver fixtures. Click here for more information or call 805-788-6633 to schedule a site visit.

The Los Osos Wastewater Project
The Los Osos Wastewater Project will provide wastewater collection, conveyance, treatment, and recycled water reuse for the Los Osos community that is currently unsewered and utilizes septic tanks.   The collection system consists of a conventional gravity sewer collection system with pump stations. The system consists of buried pipes for main sewers, trunk sewers, and laterals.  Pump stations will convey the collected wastewater via force mains and gravity sewers to the midtown pump station for ultimate delivery to the water recycling facility.

Project Details
Los Osos Wastewater Collection System Areas A&D, Contract No. 300448.08.01.AD
Los Osos Wastewater Collection System Areas B&C, Contract No. 300448.08.01.BC
Los Osos Wastewater Collection System Pump Stations, Contract No. 300448.08.01.PS
Los Osos Water Recycling Facility, Contract No. 300448.08.02

San Luis Obispo County, Department of Public Works and Transportation
CDM Smith
Construction Manager
HDR Engineering, Inc.


Please Visit the County Website for Updates - CLICK HERE

Construction Process - CLICK HERE

Property Encroachments - READ MORE

Water Conservation Program - CLICK HERE

Los Osos Wastewater Project Brochure - CLICK HERE


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