Cal. Sts. & Hy. Code § 10100.7
The legislative body of any municipality which has entered into an agreement with an owner or owners of land within the municipality whereby the owner or owners have constructed or acquired water system facilities, including wells, pumps, dams, reservoirs, storage tanks, pipes, hydrants, meters or other appurtenances for supplying or distributing a domestic water supply, or sewer system facilities, including sewers, pipes, conduits, manholes, treatment and disposal plants, connecting sewers and appurtenances for providing sanitary sewer service, or capacity in these facilities, and have transferred the facilities or capacity to the municipality to be utilized by it for providing water or sewer service, or both, to the land of the owner or owners, and whereby the municipality has agreed to refund or reimburse to the owner or owners the cost of the facilities or capacity or any portion thereof out of connection fees or other revenues or funds of the municipality, including an assessment levied upon the land of the owner or owners or proceeds from the sale of bonds issued pursuant to this division, may upon obtaining the written consent of the owner or owners conduct proceedings pursuant to this division for the formation of an assessment district over and including the land of the owner or owners and levying an assessment thereon and issuing bonds as authorized by Chapter 7 (commencing with Section 10600), for the purpose of satisfying its refund or reimbursement obligation to the owner or owners. The municipality may, upon obtaining the written consent of the owner thereof, include in the assessment district, and levy an assessment upon, any land which will benefit from the water or sewer system facilities, or both, or capacity therein, whether or not the land is owned by the owner or owners who are parties to the agreement with the municipality, but may not include in an assessment district the land of any owner who does not consent in writing thereto.
Ca. Sts. and High. Code § 10100.7