Dry well station description

• A. A dry well station has a wet well.
• B. A dry well station uses electric heaters.
• C. A dry well station has no wet well.
• D. A dry well station is not used.

Answer: (A)

The key idea here is how dry-well pumping stations are built. In a dry-well station, the machinery and controls are located in a dry chamber, while the wastewater to be pumped is collected in a separate basin called a wet well. The pump is arranged so the dry-area equipment drives pumping from or into the wet-well, meaning the system still contains a wet well as part of its design. So saying that a dry-well station has a wet well is the correct description. The other statements aren’t defining features of this type of station (heaters aren’t the distinguishing point, and having no wet well or not being used aren’t accurate for the usual setup).