Water Projects

Otay Water Treatment Plant Upgrade and Expansion

San Diego, California
City of San Diego
Process Design:
Separation Processes, Inc.
F.H. Paschen/SN Nielsen
American Society of Civil Engineers, San Diego Section, Award of Excellence

The City of San Diego Water Department selected Butier Engineering, Inc. to provide construction management, field engineering, administration, and inspection services for the Otay Water Treatment Plant Upgrade project. This upgrade and expansion project is under the City’s Capital Improvement Program.

The scope of work consisted of the construction and installation of piping (48″ overflow and 18″ storm drain piping) and facilities for a membrane filtration system; mass grading and construction of two 7 million-gallon treated water (clearwell) reservoirs (DYK prestressed concrete reservoirs); modifications to a raw water pump station; and the installation of a chlorine vapor scrubber. Tie-ins were completed successfully to the CWA SD-7 raw water line and the lake water influent line.

The Otay plant is a critical component of one of the nation’s largest systems for storing, treating, and delivering water to residents and businesses.