How do I know if my house has a sewer cleanout?

Author: Gisselle Satterfield  |  Last update: Wednesday, July 16, 2025

To find a buried sewer cleanout, walk around the perimeter of your house, close to the foundation. A buried sewer cleanout is generally located on the outside of a bathroom. You'll recognize it as a 3-to-4-inch capped pipe with a square or round head.

Do all houses have a sewer cleanout?

A lot of people think they don't have sewer cleanouts. But as I said, pretty much all homes do these days. It's more likely that your sewer cleanout is buried, often in a flower bed area. People cover up the cleanout because they think it's an eyesore.

What does my sewer cleanout look like?

A sewer cleanout is generally, but not always located outside a bathroom. You'll recognize it as a black or white, three- to four-inch capped pipe. Since cleanouts aren't needed often, yours may be covered by bushes, underbrush, or grass.

What if I don't have a sewer cleanout?

If you don't have cleanouts, removing the toilet may be your only option. This increases the cost of labor and the risk of damage to the toilet itself. After the toilet is removed, the plumber can then use a drain machine to remove the clog.

How much does it cost to get a sewer line cleaned out?

Clearing a clogged sewer line costs $250 to $800, depending on where the clog is located, what causes it, and the necessary cleaning. A clogged sewer line is typically an indication of a much larger problem. The main sewer line is much larger and can typically handle more volume than the average drain in your home.

How to find your sewer cleanout (and why it's important!)

How do I clear my main sewer line in my house?

Your step-by-step guide: How to clear a main sewer line clog
  1. Step 1: Loosen the cap on the drain pipe. ...
  2. Step 2: Open the cap and let the buildup drain out. ...
  3. Step 3: Feed the auger cable into the drain pipe. ...
  4. Step 4: Run the auger until the clog is clear—and beyond. ...
  5. Step 5: Hose down the pipe and auger cable.

How much does a house cleanout cost?

Home cleanout costs per square foot may vary, but generally, you can expect to pay between $0.20 and $0.50 per square foot, depending on the condition of the property and the volume of items to be cleared.

Where are most sewer cleanouts located?

Indoor cleanouts are often located near a bathroom, utility room, or garage floor drain. If this is the case, it should be easy to spot, as it's usually positioned directly next to the drain or just a few feet beside it. However, some cleanouts may be harder to spot and require access to your home's crawl space.

How do you know if your sewer cleanout is clogged?

The following are signs to watch for that can help you detect a sewer blockage in your home.
  1. Multiple Fixtures Are Clogged. ...
  2. Flushing the Toilet Causes Water to Come Up Elsewhere. ...
  3. Water Draining From Your Washing Machine Causes an Overflow in Other Locations. ...
  4. Drainage at the Cleanout. ...
  5. Slow-Draining Sinks or Toilets.

How often are cleanouts required?

For long runs of piping, a cleanout is required every 100 feet. This measurement is taken from the highest end of the horizontal drainage piping to the point of connection with the building sewer.

Does every drain need a cleanout?

Drain cleanouts are access points located throughout a home's drain line, usually near the basement wall. Each drain in the house typically has at least one drain cleanout, from which debris and clogged material can be removed.

How do you know when your sewer is full?

Toilets Flush Slowly

You might find that your toilet doesn't fully flush or flushes very slowly and odd noises occur when you flush your toilet. These noises usually sound like gurgling or bubbling. Additionally, the water in your bathtub or shower takes much longer to drain than normal.

How to find a sewer access point?

Your home's sewer cleanout is a crucial part of your plumbing system. You'll usually find it outside, about 1 to 3 feet from where your house meets the ground. Look for a pipe sticking up with a cap on top that might have a square knob or notch for turning.

How do you remove sewer cleanout?

Apply rust penetrant and vibration

Then soak the cleanout plug threads with rust penetrant. Next, smack opposite sides of the tee or wye fitting at the same time using two hammers. Rotate the double blows around the entire fitting. Then try using a pipe wrench again.

Where must a cleanout be installed?

There shall be a cleanout near the junction of a building drain and building sewer either inside or outside the building wall. Cleanouts shall be placed in the building sanitary sewer and the building storm sewer at the property line and brought to the surface.

How much does it cost to clear a sewer line?

According to a . net plumbing job estimator, the national average charge for a professional to service your sewer line is $196-$289. The lower end for a straightforward drain cleaning is $55, with the maximum around $1300.

Will Drano unclog a main sewer line?

With a clogged basement drain, pouring Drano or similar products down your sewer drain can actually damage your pipes or the glue holding them together, causing more sewer system problems in the future.

What does a home sewer cleanout look like?

A drain cleanout pipe is typically white or black and looks 3, 4, or 6 inches in diameter. Most caps are made of ABS plastic, though about 76 million homes in America still have cast iron sewage lines made with brass, cast iron, or copper plugs. Only plumbing professionals should use the drain cleanout.

How do I check my sewer cleanout?

Look to see where the utility pipes exit your home. Follow the line to see if it has a capped cleanout pipe near it. The line will often be right outside your home, but it could also be on the inside. The cleanout is usually right next to the foundation of your home, so look for a plugged pipe coming out of the floor.

How many sewer cleanouts does a house have?

Many homes have two clean-outs (see below). One is near the foundation of the house and the second is at or near the property line. First, check the clean-out next to the house to see if it has water in it. If it doesn't contain any water, then you know the blockage is somewhere in the house plumbing.

How to clear a main sewer line clog yourself?

You can tackle a clogged sewer line using other strategies if you don't have a snake on hand. First, you can run hot water down the drain for 5 to 10 minutes to see if that helps break up the clog. If it doesn't, pour equal parts of vinegar and baking soda into a bowl and then pour that mixture down the drain.

How much do plumbers charge to install a cleanout?

Depending on the job's difficulty, cleanout installation will cost the average homeowner between $650 – $2,000, with the highest cost reserved for those that require extensive digging and retrofitting.

Do I need a sewer cleanout?

Installing a sewer line cleanout has many benefits when it comes to unclogging or maintaining sewer pipes. You need one if it's not already installed. Sewer line clogs are often hard to locate and can be too deep for a plumbing snake to reach or for the force of a plunger to have any effect.

Previous article
How much does it cost to fix a settling foundation?
Next article
How do you neutralize a burnt smell in your house?