1. Golden mussels detected in Diamond Valley Lake Golden mussel larvae were found in water samples from Diamond Valley Lake. Mussels had also been detected in State Water Project facilities, including Pyramid and Silverwood Lakes, and in Metropolitan’s Rialto Pipeline, Live Oak Reservoir and the influent to Mills. General Manager Shivaji Deshmukh said golden mussels do not affect drinking water safety but can affect infrastructure and local ecosystems. Staff are implementing controls at priority locations to protect vulnerable infrastructure and groundwater replenishment deliveries. They plan to augment those measures once the California Department of Fish and Wildlife approves their control plans.
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