Sunol Valley Water Treatment Plant Ozonation Project
Overview
In recent years, the San Francisco Public Utilities Commission’s Sunol Valley Water Treatment Plant (SVWTP) has experienced more frequent taste and odor (T&O) events from seasonal algal blooms than had occurred historically. Algae blooms can occur at any time, but large blooms tend to occur in the Spring and Fall due to nutrient availability, temperature, and sunlight. This project’s objective is to install ozone treatment facilities as a long-term solution to control T&O events encountered in the raw water supply from both the San Antonio and Calaveras Reservoir sources.
Details
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Project Background
The project will improve the SFPUC’s ability to reliably meet water quality goals, especially during warm months and during Hetch Hetchy shutdowns when water is drawn from other sources.
The driver for the current project is a response to changing conditions in the local reservoirs. At the same time, there will be secondary benefits including disinfection redundancy and reduction of disinfection byproducts, color, and emerging contaminants.
Visualization of proposed new ozonation facilities
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Project Materials
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