Section 81609 Of Article 2. Definitions From California Water Code >> Division 31.7. >> Chapter 1. >> Article 2.

. "Regional water system" means facilities for the storage, treatment, and transmission of water operated and maintained by San Francisco located in the Counties of Tuolumne, Stanislaus, San Joaquin, Alameda, Santa Clara, San Mateo, and three terminal reservoirs in San Francisco.