Hand washing stations are required in all of the following except:

Hand washing stations are crucial for promoting food safety and preventing cross-contamination in food handling environments. Their primary function is to ensure that food handlers can maintain proper hygiene by washing their hands frequently, especially before handling food or after using the restroom.

Examining the context of this question, food preparation areas, dishwashing locations, and bathrooms are all places where hand washing facilities are necessary. In food preparation areas, hand washing stations allow employees to wash their hands frequently to avoid contaminating food items. Similarly, in dishwashing areas, having a hand washing station ensures that workers can clean their hands before handling clean dishes or after touching soiled items. Bathrooms also inherently require hand washing facilities to encourage personal hygiene after using the toilet.

On the other hand, dry storage areas do not typically require hand washing stations since these spaces are primarily designed for storing non-perishable items and do not involve direct food handling or preparation. Therefore, it is unnecessary to have hand washing facilities in these areas, as the risk of contamination is much lower compared to areas where food is actively handled or prepared. Thus, the absence of a required hand washing station in dry storage areas makes this the correct answer.