Connect the symptoms
One fixture or a main-line concern?
A single sink that drains poorly and several fixtures backing up together provide different starting points. Tell us if toilet problems occur alongside slow tubs or sinks, or whether odors remain after a drain has been cleared. Include when the connected symptoms first appeared.
Repeated backups merit investigation even when an earlier treatment restored flow. Explain which fixture improved and which did not. The team can then consider whether the concern belongs to that drain, the main wastewater line or an unresolved condition elsewhere in the drainage system.
