Each service rig and piece of application equipment that handles pesticides and draws water from an outside source shall be equipped with an air-gap separation, reduced pressure principle backflow prevention device or double check valve assembly. Backflow protection must be acceptable to both the water purveyor and the local health department.
Cal. Code Regs. Tit. 3, § 6610
Note: Authority cited: Sections 11456 and 12976, Food and Agricultural Code. Reference: Section 11501, Food and Agricultural Code.