1. Golden Mussel Treatment Costs May Affect Future Water Charges The district has treated its canal and pipeline system for golden mussels since October 12. Staff estimated initial treatment costs near $40 per acre-foot because dosing had to overcome heavy biological buildup. With a treatment residual established throughout the system, district staff targeted $13–$14 per acre-foot for long-term maintenance, while a treatment representative estimated a broader $13–$25 range depending on conditions. Staff expects treatment to remain an ongoing expense that existing revenue cannot absorb and anticipates considering the cost in future water delivery rates, potentially when setting 2028 charges. No future rate increase was adopted. A regional estimate cited at the meeting put Kern County’s 2026 golden mussel costs near $36 million. The board voted to continue the district’s golden mussel emergency declaration.
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