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Glendora reports modest water supplies but flags invasive "golden mussel" risk to imported deliveries
Summary
City staff said local rainfall and reservoir conditions are mixed but noted a new operational risk: the invasive golden mussel, which can foul pumps and screens on import systems and could reduce deliveries if spread continues.
Dale Wirtz, water division manager for the City of Glendora, presented the city’s third‑quarter water supply outlook and warned of an operational threat from an invasive bivalve commonly called the golden mussel.
Local precipitation and supplies: Wirtz reported 10.8 inches of rainfall at the city water yard for the first half of the water year (Oct. 1–Sept. 30), compared with an annual average near 20 inches measured at that site. He summarized regional water activity: planned deliveries from upper‑district and 3 Valleys accounts are in motion (Wirtz cited 3 Valleys’ plan to deliver a larger tranche in…
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