ADEQ Wastewater Collections 2 Practice Test

Where is the bubbler tube open end found?

Lift station wet well Air relief valve Sewer cleaning truck Pump station dry well

Correct Answer:

Lift station wet well

Explanation:

Bubbler level measurement works by keeping the tube’s open end submerged in the liquid whose level you need to know so that hydrostatic pressure in the tube matches the liquid depth. In a wastewater system, the area that actually contains the liquid and varies with flow is the lift station wet well. Therefore the open end of the bubbler tube sits in the wet well, not in a dry well or in an air vent or on a truck. This is why the lift station wet well is the correct location for the bubbler tube’s open end.

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