… EBRPD [East Bay Regional Park District] changed its boat inspection and banding policies back in May to help protect its waterways from the golden mussel, instituting new color-coded, lake-specific, tamper-proof bands and no longer accepting EBMUD’s [East Bay Municipal Utility District] bands. Boats without a band for that specific waterbody had to go through a full inspection and pay a fee, each time. … The change seems to have largely worked, with an asterisk in Antioch. … [T]he critter was found in Contra Loma Reservoir, so boats that have been in that lake must stick there only or complete a 30-day quarantine. Meanwhile, a half-inch-long juvenile golden mussel was recovered at Zone 7’s Patterson Pass Water Treatment Plant this year.

Other invasive species news:

• East Bay Municipal Utility District: News release: EBMUD to reopen boat launches for 2026 season​