Section 23570 Of Article 3. Actions And Proceedings From California Water Code >> Division 11. >> Part 6.5. >> Chapter 3. >> Article 3.

. All acts, proceedings, conclusions, and findings of fact, including the levy of assessments or charges, by a board of a district concerning a distribution district therein shall be conclusive except in an action or proceeding instituted within six months after the acts, proceedings, conclusions, or findings were had or made.