Red Seal Plumbing Practice Exam

When installing a series of water treatment devices, where is the water softener always located?

1. First

2. In the middle

3. Last

4. Anywhere

The correct answer is: Last

The water softener is always located last in a series of water treatment devices. This is because the water softener is designed to remove minerals from the water that may clog or damage the other treatment devices. Placing it last ensures that it receives water that has already been treated, allowing it to function more effectively. Additionally, placing it in the middle or first would require the water to pass through the other devices before reaching the softener, which could potentially decrease its effectiveness. Option D, placing it anywhere, is incorrect as there is typically a specific order in which water treatment devices should be installed for optimal function.