California Water Code Section 10850

(a) Any actions or proceedings to attack, review, set aside, void, or annul the acts or decisions of an agricultural water supplier on the grounds of noncompliance with this part shall be brought pursuant to Section 1085 of the Code of Civil Procedure, and the court`s review of compliance or noncompliance with this part shall extend to whether the water conservation plan, or portion thereof, or revision thereto, substantially complies with the requirements of this part. (b) An action or proceeding alleging failure to adopt a plan shall be commenced within 18 months after that adoption is required by this part, or within 18 months after commencement of agricultural water service by a supplier commencing that service after January 1, 1988. (c) Any action or proceeding alleging that a plan, or action taken pursuant to the plan, does not comply with this part shall be commenced within 120 days after filing of the plan or amendment thereto pursuant to Section 10844 or the taking of that action. (d) In an action or proceeding to attack, review, set aside, void, or annul the acts or decisions of an agricultural water supplier made pursuant to this part at a properly noticed public hearing, the issues raised shall be limited to those raised in the public hearing, or in written correspondence delivered to the public agency prior to, or at, the public hearing, except where the court finds either of the following. (1) The issue could not have been raised at the public hearing by a person exercising reasonable diligence. (2) The body conducting the public hearing prevented the issue from being raised at the public hearing.