Cal. Wat. Code § 25825.1
Within the Madera Irrigation District only, any person having an interest in any land within the district may file with the secretary, in lieu of the petition authorized by Section 25825, a verified petition alleging as to such land all of the following:
The procedure for any such petition shall be in accordance with this article.
A city whose area or any portion thereof is located within the boundaries of the Madera Irrigation District may petition the district to establish a special rate for the land in such city area on the basis that such area is served by a municipal water supply and is not susceptible of irrigation and therefore not benefited in a sufficient manner to justify assessment at the regular rate. The procedure for any such petition shall be in accordance with this article.
After the conclusion of the hearing as provided in Section 25831, if the board finds that any of the land described in any petition is served by a municipal water supply and is not and will not be benefited to the same extent as other lands by the operations of the district or in a manner that would justify its assessment at the regular rate of assessment, the board may adjust the rate of assessment on the land in an order entered in full upon its minutes.
Ca. Water Code § 25825.1