Florida Home Inspector Practice Test

Which of the following is NOT a common location for cross connections in plumbing?

1. Bidet

2. Garden Hose

3. Boiler

4. Air Conditioner

The correct answer is: Air Conditioner

Cross connections in plumbing occur when there is a possibility for contaminated water to enter the potable water supply. Understanding the common places where these connections can happen is crucial for preventing water quality issues. In plumbing systems, bidets, garden hoses, and boilers are all potential sites for cross connections. For instance, bidets can create a cross connection if their supply line is improperly installed, allowing non-potable water to siphon back into the drinking water supply. Garden hoses are particularly notorious for this issue, often being used in conjunction with insecticides, fertilizers, or other chemicals, which can lead to contamination if the hose is submerged in these substances. Boilers can also create cross connections, especially if they have an open tank or feed system, where boiler water can potentially mix with the potable water supply. Air conditioners, on the other hand, typically do not create cross connections to the same degree. While they may have drainage systems and use water for cooling purposes, they are generally designed to prevent backflow and contamination. Their operation is not directly connected to the drinking water supply in a way that would lead to cross contamination. Thus, the air conditioner stands out as the least likely location for cross connections among the options provided.