Licensed & Insured · Scotts Valley, CA Open 24 hours, 7 days
24/7 (831) 555-0179
Scotts Valley Plumbing Scotts Valley's Local Plumbing Crew

Drain backing up in the kitchen or bathroom: what's causing it

A drain that backs up or drains slowly usually has a clog of hair, soap, food, or grease trapped inside the pipe. Sometimes the clog is in your line alone. Sometimes it's in the shared sewer line under the street. A plumber uses a camera to find where it is.

Do this right now

1

Stop using that drain immediately

Do not run water or flush if a toilet is affected. Do not pour anything down the sink. The more you use it, the further back the clog pushes and the worse it gets.

2

Try a plunger if it's safe

For a sink, fill it with a few inches of water, plug the overflow hole if there is one, and plunge hard for 20 seconds. For a toilet, use a toilet plunger and push down and pull up firmly. Do this only if water is not already backing up onto the floor.

3

Check other drains in the house

Run water in another sink, tub, or shower. If those drain fine, the clog is in that one pipe only. If multiple drains back up or slow down together, the main sewer line may be blocked.

4

Call for an inspection

A plumber with a camera can see inside the pipe and show you exactly where the clog is. You need this to know if it's a simple one or a bigger problem.

Clogs happen for different reasons. In kitchen sinks, grease is the biggest culprit. You pour it down hot and it flows, then cools inside the pipe and hardens into a plug. Hair and soap scum pile up in bathroom drains over months. In Scotts Valley, Boulder Creek, and the surrounding areas, we also see root intrusion in older sewer lines. Tree roots follow moisture and crack into pipes, then trap debris.

When a drain backs up, it means water cannot move forward. You might see it bubbling up in the sink, rising in the toilet bowl, or pooling on the floor. Smell usually follows. The longer you wait, the more water fills your pipes and the worse it gets. If it's the main line, it affects every drain in the house.

A plumber uses a drain camera or a mechanical snake to clear it. The camera tells us what we're dealing with: is it grease, is it roots, is it a collapsed section of pipe? For a simple clog caught early, we get it done in an hour or two. For something worse, we let you know what your options are before we start. We're at your door in about 45 minutes.

Common questions

What's the difference between a clogged sink and a main sewer line backup?
A clogged sink drain affects only that one fixture. You can use other sinks, showers, and toilets fine. A main line backup means water cannot leave the house at all. Multiple drains back up together, and the problem is serious. A plumber checks this by running water in different parts of the house.
Can I use drain cleaner to fix a backup?
Drain cleaners work sometimes on fresh, simple clogs, but they do not touch roots or serious blockages. They can damage old pipes too. If a clog is already backing up, a plumber with a snake or camera is faster and safer.
How do roots get into sewer lines?
Tree roots are attracted to the moisture and nutrients in sewer pipes. Over years, they penetrate small cracks or joints in the pipe and grow inside it. They trap hair, grease, and debris, and eventually block the line. It's common in homes with mature trees on the property or close by.

Still not sure?

Describe what you're seeing to a real Scotts Valley plumber: call (831) 555-0179 or send the form. Free, no obligation.