What does a privy building refer to?

A privy building specifically refers to a structure designed for the purpose of providing privacy during urination and defecation. This type of facility is typically found in locations where a connection to a modern sewage system is unavailable, such as in rural areas or older settlements. The term "privy" historically describes outdoor toilets or outhouses that serve the essential function of waste disposal while ensuring the user’s privacy.

In contrast, the other options describe structures that do not align with the traditional definition of a privy. For instance, a building connected to the public sewage system denotes modern plumbing facilities, while community baths and changing rooms refer to shared hygiene spaces that do not function as toilets. Additionally, a storage area for sanitation supplies serves a completely different purpose related to the management of sanitation equipment rather than providing a place for waste disposal.