Cal. Pub. Util. Code § 18050
Notwithstanding any other provision of law, any public utility district in the Lake Tahoe Basin which has provided or undertaken to provide a sewer system and treatment facilities which transport or are intended to transport any resultant sewage effluent outside the Lake Tahoe Basin, may form zones and issue zone bonds for the purpose of financing the costs of interceptor trunk sewers, force mains, pumping stations and appurtenant structures in the zone which, in the opinion of its board of directors, are necessary or useful in connecting local sewerage collection systems to the major sewerage works and system of the district, or which are necessary or useful in causing local areas to install sewerage collection systems, as provided in this chapter.
Ca. Pub. Util. Code § 18050