SCH Number 2009032035

Project Info

Title

San Antonio Reservoir Hypolimnetic Oxygenation System

Description

The San Francisco Public Utility Commission proposes to install a system to add oxygen to the water of the existing San Antonio Reservoir. The proposed oxygen system would be installed near the reservoir at a location approximately 100' from the northern end of Turner Dam. The San Antonio Reservoir Hypolimnetic Oxygenation System project would enhance water quality in the deeper layer of the reservoir (the hypolimnion) becomes depleted during summer months due to limited mixing. With the addition of oxygen into the hypolimnion, nutrient build-up is reduced and water quality is improved. Excessive nutrients promote algae blooms, which require remediation using compounds that may cause taste and odor problems. Odor and taste problems, while usually non-threatening to human health, reduce consumer satisfaction and confidence in a safe water supply and can be difficult and expensive to treat in a water supply treatment plant. In addition, proliferation of certain blue-green algae may form cyanotoxins, which have recently become a public health concern.

2 documents in project