A plain-English guide to locating your home's sewer cleanout, what it's for, and how knowing where it is can save time and money on your next drain call.
When a drain backs up, one of the first things a plumber looks for is your sewer cleanout — a capped access point that opens directly into your main sewer line. Knowing where yours is (before there's a problem) makes service faster, cleaner, and often cheaper.
What a cleanout actually is
Your home's drains all feed into one main line that carries waste out to the city sewer or your septic tank. A cleanout is a Y- or T-shaped fitting with a removable cap that gives direct access to that main line. It exists for exactly one reason: so a drain cable or hydro-jetting hose can be fed straight into the pipe without pulling a toilet or going through a roof vent.
When a plumber can reach the blockage through a cleanout, the job is usually quicker and less disruptive. When there's no accessible cleanout, they have to find another way in — which takes longer.
Where to look
Cleanouts show up in a few predictable places:
- Outside, near the foundation. Walk the side of the house that faces the street (the sewer usually exits toward the city main). Look for a short capped pipe sticking a few inches out of the ground, often near a flower bed or along the foundation.
- In the basement or crawlspace. Follow the largest drain pipe — typically 3 to 4 inches — toward where it exits the house. A capped fitting on that run is your cleanout.
- In the garage or utility area. In slab-foundation homes, the cleanout is sometimes near the water heater or laundry.
- At ground level in the yard. On some properties the cleanout sits over the line between the house and the street, flush with the grass under a small round cover.
If your home was built on a concrete slab, the cleanout is almost always outside. If it has a basement, check inside first.
Why knowing this pays off
Two reasons it's worth a five-minute walk around your house today:
- Faster emergency service. If a main line backs up at 11 p.m., being able to say "the cleanout is on the north side by the hose bib" gets the problem solved sooner.
- Better diagnosis. A cleanout is also the access point for a sewer camera inspection — the only way to actually see whether a recurring backup is grease, roots, or a broken pipe rather than guessing.
A note on older Utah homes
Plenty of established homes across Utah County and Salt Lake County — especially pre-1980 builds — either have a cleanout that's been buried under decades of landscaping or were plumbed without an accessible one at all. If that's your situation, it's usually worth having an accessible cleanout added. It's a modest, one-time job that makes every future drain service simpler.
If you can't find your cleanout or you're dealing with a backup right now, we're available 24/7 — and we can locate the line, clear it, and add a proper cleanout if you don't have one.
Need this handled?
See our drain cleaning service.