NAC445A.559. Minimum requirements for sanitization.

     1. The operator shall sanitize all equipment, containers and other surfaces which come into contact with processed water.

     2. The operator shall maintain a record of the intensity of the sanitizing agent used and the length of time during which the agent was in contact with the surface being sanitized.

     3. The minimum requirements regarding the intensity of the sanitizing agent used and the time the agent must be in contact with the surfaces which are required to be sanitized are:

     (a) If the sanitization is by steam or hot water in an enclosed system, exposure to 170°F for 15 minutes or 200°F for 5 minutes.

     (b) If the sanitization is by immersion or circulation in a chemical solution, the solution must be equivalent in bactericidal action to a 2-minute exposure of 50 milligrams per liter of available chlorine at 57°F.

     (c) If the sanitization is by chemicals which are applied as a spray or fog, the chemicals must be equivalent in bactericidal action to a 2-minute exposure of 100 milligrams per liter of available chlorine at 57°F.

     (d) If the sanitization is by immersion in a solution of 0.1 mg/l ozone water in an enclosed system, exposure for 5 minutes.

     4. When a container is sanitized with a substance other than one listed in 21 C.F.R. § 178.1010, as that provision existed on April 1, 1993, the substance must be removed from the surface of the container in the final rinse before the container is filled with the treated water. The rinse must consist of water which is free of pathogenic bacteria or sanitized by one of the methods listed in subsection 3.

     (Added to NAC by Bd. of Health, eff. 10-14-82; A 9-15-94)