No vessel engaged in interstate traffic shall obtain water for drinking and culinary purposes from any water boat unless the tanks, piping, and other appurtenances used by the water boat in the loading, transportation, and delivery of such drinking and culinary water, have been approved by the Commissioner of Food and Drugs. [40 FR 5620, Feb. 6, 1975, as amended at 48 FR 11431, Mar. 18, 1983]