Section 51333 Of Article 3. Operation And Maintenance Assessments From California Water Code >> Division 15. >> Part 7. >> Chapter 2. >> Article 3.

. Within 30 days after an operation and maintenance assessment roll is approved by the board of supervisors, any person aggrieved by the decision may commence an action in the superior court of the principal county to have the assessment valuations corrected, modified or annulled.