1. Golden Mussel Threat Requires Proactive Treatment — Growers Should Be Aware of Water Quality Implications The invasive golden mussel, discovered in the Delta in 2024, has spread rapidly through the State Water Project aqueduct system. Cawelo is preparing to treat incoming water with chelated copper at pump station B to prevent colonization of district infrastructure, and discussed also treating at Station 8 if Article 21 water is taken into the Lerdo/Beardsley system. The estimated cost for maintenance-dose treatment is $20–$30 per acre-foot per injection site. Growers using chlorine tabs or similar treatments in their on-farm systems may want to evaluate whether their current practices provide adequate protection, though staff noted sustained residual concentrations are needed to be effective against this pest.
Already have an account? Sign In
