After the effective date of any lease by an irrigation district under the authority granted by section 43-335, Idaho Code, no landowner who has elected not to receive water from the district and who owns land from which the water right has been leased and who has actual knowledge of the lease, shall use water from the community ditch, if any, by which water is carried from the district's system to his land. Any landowner violating this section shall be liable for all costs reasonably incurred by the district in enforcing the provisions of this section.
Idaho Code § 43-342