AB 1894: Fish and wildlife: invasive mussels: imported water.

Official summary

Legislative Counsel’s Digest (official, as of the latest version). Written by nonpartisan legislative staff; reproduced verbatim.

Existing law, until January 1, 2030, generally prohibits a person from possessing, importing, shipping, or transporting in the state, or from placing, planting, or causing to be placed or planted in any water within the state, invasive mussels, and authorizes the Director of Fish and Wildlife, or the director’s designee, to engage in various enforcement activities with regard to invasive mussels. Existing law, until January 1, 2030, requires a public or private agency that operates a water supply system to cooperate with the Department of Fish and Wildlife to implement measures to avoid infestation by invasive mussels and to control or eradicate any infestation that occurs in a water supply system. Existing law requires any person, or federal, state, or local agency, district, or authority that owns or manages a reservoir, where specified activities are permitted, except as specified, to develop and implement a program designed to prevent the introduction of invasive mussel species, as provided. Existing law requires any entity that discovers invasive mussels within the state to immediately report the discovery to the department.

This bill would prohibit a public agency from prohibiting imported water deliveries for groundwater replenishment, as defined, due to invasive mussels if the importation complies with a specified invasive mussel control plan and unless there is substantial, documented evidence of a proven health and safety risk as a result of the invasive mussels.

The bill would include findings that changes proposed by this bill address a matter of statewide concern rather than a municipal affair and, therefore, apply to all cities and counties, including charter cities and charter counties.

Sponsors

Sponsors by party (alphabetical): Democratic 1

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

1. September 18, 2026Vetoed by Governor.
2. August 27, 2026Enrolled and presented to the Governor at 4 p.m.
3. August 20, 2026Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 77. Noes 0. Page 6309.).
4. August 17, 2026In Assembly. Concurrence in Senate amendments pending.
5. August 17, 2026Read third time. Passed. Ordered to the Assembly. (Ayes 39. Noes 0. Page 5492.).
6. June 23, 2026Read second time. Ordered to third reading.
7. June 22, 2026From committee: Be ordered to second reading pursuant to Senate Rule 28.8.
8. June 9, 2026From committee: Do pass and re-refer to Com. on APPR. (Ayes 7. Noes 0.) (June 9). Re-referred to Com. on APPR.
9. May 28, 2026From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on N.R. & W.
10. May 13, 2026Referred to Com. on N.R. & W.
11. May 5, 2026In Senate. Read first time. To Com. on RLS. for assignment.
12. May 4, 2026Read third time. Passed. Ordered to the Senate. (Ayes 74. Noes 0. Page 4914.)