A single slow or clogged sink, tub, or shower can often be checked safely before service is needed. The important first distinction is whether the problem is limited to one drain.
If several fixtures are backing up, or dirty water or sewage is coming up through another drain, stop this troubleshooting path and use the Sewer Backup & Sewage Problems guide.
Start With Visible Debris
Remove hair, soap buildup, or other debris that is plainly visible at the drain opening and can be reached without taking plumbing apart.
If the fixture has a simple user-removable stopper, clear visible debris around it. Stop if access would require removing piping, an overflow assembly, or another installed plumbing component.
Try a Sink or Tub Plunger
If the clog remains localized, use a plunger designed for a sink or tub. There should be enough water around the plunger cup to help it seal against the drain opening.
Use controlled strokes rather than excessive force. If the drain begins moving normally again, run a modest amount of water and confirm that it continues to drain.
A Basic Hand Drain Snake May Be the Next Step
If the clog is still limited to one sink, tub, or shower and no chemical drain cleaner has been used, a basic hand-operated drain snake intended for household sink, tub, or shower drains may be reasonable.
Use it only through a readily accessible drain opening and follow the tool manufacturer's instructions. Stop if the method would require removing the trap, overflow assembly, piping, or another installed component, or if the tool meets resistance that you cannot clear with ordinary hand pressure.
Do not insert a drain snake after chemical drain cleaner has been added.
When the Problem Is No Longer a Localized Clog
Stop ordinary drain troubleshooting if another fixture starts backing up, a toilet begins bubbling when another drain is used, or dirty water or sewage rises from another fixture or floor drain. Those symptoms belong with the sewer-backup guide.
What to Report
If the drain remains clogged or the problem returns, tell us which fixture is affected, whether the water drains slowly or not at all, whether any other fixtures are affected, whether visible debris was removed, and what happened when you tried plunging or a basic hand snake.
Submit the unresolved problem through your resident portal. For other plumbing symptoms, return to Plumbing & Water Problems.
Published: September 2, 2026
