Floor drain is slow or clogged

Symptoms

• Water takes a long time to drain from the floor
• No backup from other fixtures, just slow local drainage
• Drain cover has visible dirt or debris around it
• Musty smell near the drain

Likely causes

• CommonDirt, debris, and sediment settled in the drainFloor drains catch dust, dirt, and debris that settle and compact over time.
• CommonDry or partially clogged trapInfrequent use lets debris dry and harden inside the trap.
• PossibleObject dropped into the drainSmall debris can lodge and restrict flow.
• Less commonRoot intrusion or a deeper line clogWorth considering if the drain has never worked well since move-in.

What to do

1. Remove the floor drain cover, usually by prying or unscrewing it, and clean out visible debris.
2. Pour a bucket of hot water down the drain to help flush loosened material and refill the trap.
3. Use a stiff brush or a plastic zip-style tool to clear debris just inside the opening.
4. If still slow, use a hand-crank drain snake fed down through the drain opening.
5. Pour a bucket of water down every few weeks going forward if the drain sees infrequent use, to keep the trap from drying and to catch problems early.
6. Reinstall the cover and test with another bucket of water to confirm improved drainage.

Tools and parts

• Stiff brush
• Bucket
• Hand-crank drain snake

When to call a pro

Call a plumber if snaking the drain doesn't improve flow, since the clog may be further down the line.

Safety