All money raised by such assessments shall be accounted for separately as to each area and zone. All such money shall be transmitted by January 1st and July 1st of each year to the department for deposit in the Water Resources Revolving Fund after deduction of the amounts to be retained by the county for the reasonable costs of its services as determined pursuant to subdivision (e) of Section 12878.40.

(Amended by Stats. 1982, Ch. 759, Sec. 3. Effective September 8, 1982.)