CA Pub Util Code Section 2705.5

Any person or corporation, and their lessees, receivers, or trustees appointed by any court, that maintains a mobilehome park or a multiple unit residential complex and provides, or will provide, water service to users through a submeter service system is not a public utility and is not subject to the jurisdiction, control, or regulation of the commission if each user of the submeter service system is charged at the rate which would be applicable if the user were receiving the water directly from the water corporation.