Cal. Wat. Code § 60050
If any section, subsection, subdivision, sentence, clause or phrase of this act, or of the act or acts of which this act is amendatory or supplemental, is for any reason held to be unconstitutional, such decision shall not affect the validity of the remaining portions of this act. The Legislature hereby declares that it would have passed this act, and each section, subsection, subdivision, sentence, clause and phrase thereof, irrespective of the fact that any one or more sections, subsections, subdivisions, sentences, clauses or phrases of the act or acts of which this act is amendatory or supplemental, be declared unconstitutional. If any section, subsection, subdivision, sentence, clause or phrase of this act for any reason be held to be unconstitutional and such unconstitutional provision shall have purported to repeal or amend any provision of the acts or acts of which this act is amendatory or supplemental, the provision existing and in force at the time of the enactment of this act shall remain and be in full force and effect notwithstanding such purported repeal or amendment.
Ca. Water Code § 60050