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Miramar WTP Upgrade and Expansion Project, San Diego

Project Cost


Current Treatment Capacity

140 million US gallons/day (530,000m³/day)


215mgd (815,000m³/day)

Service Area

92,124 acres (36,850 hectares)

Population Served

500,000 (northern section of the city)

Treatment Type

Coagulation, flocculation / sedimentation, filtration and disinfection


City of San Diego Water Department


103ft (31m)

Volume (at maximum operating level)

1,807 million gallons (6.8 million m<sup>3</sup>)

Project Cost

&#36;32m (early start improvements)

Contract A Cost


Contract B Cost


Contract C Cost


Contract D Cost


Early Start Improvements

Phase I Construction Began

Summer 1998

Construction Completed

Winter 2003

Phase II Construction Began

September 2002

Final Completion

February 2005

Contract A


Late 2007

Officially opened

12 December 2007

Contract B

Construction Began

November 2007


Q1 2010

Contract C

Construction Began

May 2008

Anticipated Completion

November 2009

Contract D

Scheduled to Begin

Late 2011

Anticipated Completion

Mid 2012

Total Project Scheduled Completion


Plant Owner / Project Sponsor

City of San Diego Water Department

Early Start Contractor

Archer Western

Contract A and B

Western Summit Constructors

CFD Modelling


Contract C

Archer Western

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