What is the purpose of maintaining a watertight area where fixtures are in contact with floors and walls?

The purpose of maintaining a watertight area where fixtures are in contact with floors and walls is primarily to ensure proper sanitation. A watertight seal around plumbing fixtures helps prevent water from seeping into the surrounding areas, which can lead to the growth of mold and mildew, and create an environment conducive to bacteria and other pathogens. Water leakage can also compromise the structural integrity of the building over time, leading to further sanitation issues.

In addition, ensuring a watertight area helps to contain any potential leaks that may occur, minimizing contamination of the surrounding surfaces and reducing the risk of spreading harmful substances that could cause health problems. Moreover, it promotes hygiene within the space by making it easier to clean and maintain, as there are fewer hidden areas where grime can accumulate.

While preventing flooding, avoiding pest infestation, and enhancing aesthetics are all valuable considerations within a building's plumbing system, the foremost reason tied to a watertight connection is to maintain a sanitary environment, which is essential for the health and safety of occupants.