If a bad odor around a catch basin persists with the trap and water level in good order, what is the proper next step?

If a bad odor around a catch basin persists with the trap and water level in good order, what is the proper next step?

• A. Flush the basin with fresh water
• B. Add 7.5 to 10 lbs of quicklime to the basin daily until odors diminishes
• C. Ask residents to stay away from the catch basin area
• D. Rod and ball the connection from the catch basin to the sewer

Answer: (A)

When odors persist around a catch basin despite the trap and water level appearing normal, the next step is to flush the basin with fresh water. Flushing physically cleans out settled solids, oils, and film that can harbor odor-causing bacteria and impede flow. It helps re‑establish a clean path for runoff and ensures the trap remains properly filled, reducing the chance of gases escaping to the surface. Adding quicklime introduces chemicals and can create safety and environmental concerns; asking residents to stay away doesn’t fix the drainage or odor; and rodding the connection is typically reserved for clear blockages, not routine odor control when the trap is sound. A simple basin flush is the appropriate first action.

When odors persist around a catch basin despite the trap and water level appearing normal, the next step is to flush the basin with fresh water. Flushing physically cleans out settled solids, oils, and film that can harbor odor-causing bacteria and impede flow. It helps re‑establish a clean path for runoff and ensures the trap remains properly filled, reducing the chance of gases escaping to the surface.

Adding quicklime introduces chemicals and can create safety and environmental concerns; asking residents to stay away doesn’t fix the drainage or odor; and rodding the connection is typically reserved for clear blockages, not routine odor control when the trap is sound. A simple basin flush is the appropriate first action.