CA Water Code Section 50707

(a)

Notwithstanding any other provision of law and regardless of the number of eligible voters within its boundaries, a district may, by resolution of its governing board, conduct any election by all-mailed ballots pursuant to Division 4 (commencing with Section 4000) of the Elections Code.

(b)

An election conducted pursuant to this section shall be held on a date prescribed in Section 1500 of the Elections Code or on any other date other than an established election date.