San Francisco Public Utilities Commission
Skip to page body Home Customer Service How To Environment Projects & Programs About Us


HTWTP Long-Term Improvements (WSIP)

Project Update

As of spring 2014, the Harry Tracy Water Treatment Plant project is more than 76% complete and on schedule to finish in February 2015.

Since work began in 2011, construction workers have logged more than 900,000 hours on the job for this important infrastructure investment. In recent months, the Contractor has continued building new filters, washwater tanks, and a new Treated Water Sampling Building.

The new 11 million gallon Treated Water Reservoir is the largest and most complex part of the Harry Tracy construction. The Contractor has completed concrete placement for each of the 88 columns inside the reservoir that will help it withstand a major seismic event. The roof and outer walls of the structure are also finished.

The new Treated Water Reservoir will provide up to 140 million gallons of water per day when completed in December 2014.   Construction of 88 interior support columns inside the reservoir is now complete.


This project will increase the Plant’s capacity and reliability for treating drinking water for San Francisco and San Mateo County.

The plant is currently online and capable of drawing raw water from the Crystal Springs Reservoir System for treatment before being provided to wholesale customers.

Filtration capacity is being expanded at the plant.


Project Description
Our Contractor, Kiewit Infrastructure West Co., is working in multiple areas within the Harry Tracy Plant, part of the Hetch Hetchy Water System Improvement Program. Seismic retrofits and electrical upgrades will allow us to reliably provide up to 140 million gallons of water per day, for 60 days, within 24 hours of a major earthquake. Harry Tracy serves several communities on the Peninsula in addition to San Francisco.

Project Information

    March 2011
    February 2015
  • COST
    $278 Million

Additional Information

The information shown reflects the current forecast information published in the latest WSIP Quarterly Report.

- Construction Notice for April 2014


Need More Information? Contact

Phone: (866) 973-1476 or