A drain cleanout is a capped opening on your drain or sewer pipe that gives direct access to the line. Plumbers use it to clear clogs, run cameras, and clean the main line without removing toilets or going through sink drains.
What a Cleanout Looks Like
Most cleanouts are short pipes with a round cap or plug on top. The cap may be plastic or metal and is usually screwed on. Some have a square knob in the middle for a wrench. Outdoor cleanouts often stick up a few inches from the ground, while indoor ones may be on a wall or the floor.
Where to Look
- In the basement, near where the main drain leaves the house
- On the floor or low on a wall near the foundation
- Outside, in the yard between the house and the street
- Near a bathroom or kitchen on the lowest floor
- In a garage or crawl space in some homes
Older homes may have a cleanout hidden behind a panel or under storage. If you cannot find yours, a plumber can help locate it.
How Plumbers Use It
A cleanout makes it easier and faster to clear a main line clog. It also lets a plumber send a camera down the line to look for roots, cracks, or buildup. Without one, the plumber may need to pull a toilet to reach the drain, which takes more time.
Safety Tips
Do not open a cleanout cap if drains are backed up. Sewage can spill out under pressure. Keep the cap tight and free of damage, since a missing or broken cap can let sewer gas into the home. Keep the area around the cleanout clear so it is easy to reach in an emergency.
If your main line is clogged, clearing it through the cleanout is usually the most direct approach. If you are unsure where your cleanout is, you can ask our plumbers to help find it by calling (833) 603-1840.