Cal. Water Code § 35232

(a) In order to facilitate an orderly transition to resident voter elections, commencing with the 1991 district election, there shall be a transition period which shall continue until the entire board is elected by resident vote. At each election, during the transition period, one new director position shall convert to a resident voter position and, thereafter, shall remain a resident voter position, in accordance with the following:
1. (1) At the 1991 district election, one director shall be elected by resident voters and two directors shall be elected by landowner voters.
2. (2) At the 1993 district election, one director shall be elected by resident voters and three directors shall be elected by landowner voters.
3. (3) At the 1995 district election, two directors shall be elected by resident voters and one director shall be elected by landowner voters.
4. (4) At the 1997 district election, two directors shall be elected by resident voters and two directors shall be elected by landowner voters.
5. (5) At the 1999 district election, three directors shall be elected by resident voters.
6. (6) At the 2001 district election, three directors shall be elected by resident voters and one director shall be elected by landowner voters.
(b) Following the 2001 district election, subsequent district director elections shall be resident voter elections. The transition period shall conclude when the term of the last director elected by landowner voters ends in 2005.