California Code, Water Code - WAT § 35520.26

Concurrently with the making of the annual estimate to be filed with the board of supervisors pursuant to Section 36552, the board shall designate and determine, by resolution, the percentage of any assessment previously levied that shall be called and collected. The interest due on unpaid assessments may be called without calling any installment of the assessment.

A certified copy of the call resolution shall be published once a week for three successive weeks in a newspaper of general circulation published in the principal county, commencing no more than 20 days following the adoption of the call resolution. The secretary, concurrently with the first publication of a certified copy of the call resolution, shall deliver certified copies thereof, one to the district assessor, one to the district tax collector, and one to the district treasurer.