Cal. Water Code § 60047

The provisions of this division apply to the replenishment of ground water within all areas in this state, except those areas therein now or hereafter included within the Orange County Water District as provided by the Orange County Water District Act. The Legislature finds and declares that the problems of providing replenishment of the underground basin in the area of the Orange County Water District are peculiar to that area and for that reason it is necessary to deal specially with such area, and that this fact was recognized by the Legislature when it enacted the Orange County Water District Act and the amendments thereto to provide for such problems in that area.