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District alerts public after detection of golden mussel veligers in nearby Silverwood Lake
Summary
General Manager Catherine Cerri told the committee of a detection of golden mussel veligers in Silverwood Lake and said staff met with Arrowhead Lake Association to review protocols; she emphasized water delivered from CLAWA remains safe because golden mussels cannot survive in chlorinated water.
General Manager Catherine Cerri informed the Executive Committee that golden mussel veligers were detected in Silverwood Lake. District staff met with representatives of the Arrowhead Lake Association to review response protocols and confirmed that wash water is not being discharged into the District’s sewer system. Cerri told the committee that golden mussels cannot survive in chlorinated water and that CLAWA-delivered water remains safe for customers; the principal concern is vessel transfer from Silverwood Lake to Lake Arrowhead.
Cerri described the potential operational impact if mussels proliferate — they can clog systems and damage ecosystems — and said staff will continue coordination with the association and monitor for further detections. No regulatory action or Board authorization was decided during the Executive Committee meeting.
