1. (a) A visual inspection must be conducted before commencing a cross-connection test pursuant to section 60704 and at least annually thereafter.

2. (b) A visual inspection must include the following elements:

   1. (1) Meter locations of potable water lines and if available, meter locations of nonpotable water lines, such as recycled water, must be checked to verify that no cross-connection exists;
   2. (2) Pumps and equipment, equipment room signs, and exposed piping in the equipment room must be checked to confirm that no signs have been removed and that nonpotable facility markings are clear and visible;
   3. (3) Valves must be checked to confirm that the valve lock seals are still in place and intact. Valve control door signs must be checked to verify that no signs have been removed;
   4. (4) Each supplemental source of water supply to the OTNWS must be checked to confirm it is protected by the appropriate type of backflow prevention assembly or air gap, is intact, and has not been compromised; and
   5. (5) Signs in publicly accessible or common areas served by onsite treated nonpotable water as described in section 60692 must be checked to confirm that no signs have been removed and that nonpotable facility markings are clear and visible.

Note: Authority cited: Sections 13558 and 13558.1, Water Code; and Sections 116271 and 116350, Health and Safety Code. Reference: Sections 13558 and 13558.1, Water Code.

History

1. New section filed 4-22-2026; operative 4-22-2026 pursuant to Water Code section 13558(f) (Register 2026, No. 17).