When installing a washing machine, the drain hose should not be allowed to drain into a?

The correct choice is that the drain hose from a washing machine should not be allowed to drain into a floor drain. This practice is important for several reasons related to plumbing codes and safety standards.

Firstly, floor drains are typically designed to handle excess water from a variety of sources, such as rainwater or minor leaks. When a washing machine drains directly into a floor drain, it can potentially create a backflow situation. If the drain becomes clogged or backed up, dirty wastewater from the floor drain can siphon back into the washing machine, contaminating the clean water and laundry inside.

Additionally, the proper drainage of a washing machine is often regulated to prevent potential health hazards. Directly connecting a washing machine drain to a floor drain can violate local plumbing codes, which usually require a proper air gap or standpipe installation to ensure that there is no direct connection. This air gap allows air to enter the drainage system, preventing backflow and maintaining sanitary conditions.

In contrast, draining into a sink, basin, or bathtub generally adheres to standard practices because these fixtures are designed to handle such loads and typically have proper drainage systems that tie into the home’s plumbing without risk of back siphoning. This ensures that both the washing machine and home plumbing operate efficiently