Cal. Water Code § 32602

Notwithstanding any other provision of law, but subject to the other requirements of this part, no person or local public agency shall use water within the district’s service area from any source that is suitable for potable domestic use for nonpotable uses for cemeteries, parks, highway landscaped areas, new industrial facilities, landscaped common areas of residential developments maintained by a homeowner’s association, and golf course irrigation, if the board, in accordance with Section 32601, determines that suitable nonpotable water is available.