Cal. Wat. Code § 81608.5
"Public entities" means San Francisco and the public entities in the Counties of Alameda, San Mateo, and Santa Clara that purchase water from San Francisco pursuant to the July 2009 Water Supply Agreement, or any subsequent water supply contract, that include Alameda County Water District, City of Brisbane, City of Burlingame, Coastside County Water District, City of Daly City, City of East Palo Alto, Estero Municipal Improvement District, Guadalupe Valley Municipal Improvement District, City of Hayward, Town of Hillsborough, City of Menlo Park, Mid-Peninsula Water District, City of Millbrae, City of Milpitas, City of Mountain View, North Coast County Water District, City of Palo Alto, Purissima Hills Water District, City of Redwood City, City of San Bruno, City of San Jose, City of Santa Clara, City of Sunnyvale, and Westborough Water District.
Ca. Water Code § 81608.5