Section 51514 Of Article 2. Original And Additional Assessments From California Water Code >> Division 15. >> Part 7. >> Chapter 3. >> Article 2.

. After the period of 30 days, all unpaid original assessments shall bear interest at the rate of 1 1/2 percent per month unless the board, by resolution, adopts a lesser rate and files a certified copy of the resolution with the county treasurer.