Sewer Cleanout Installation in Mount Prospect, IL

What an outdoor sewer cleanout is and where it usually sits

A sewer cleanout is a short piece of pipe that branches off your lateral and ends in a threaded cap. Take the cap off and you have a direct opening into the building sewer, the pipe that carries waste from the house to the public main. A pro can feed a cable, a water jet or a camera through it and work on the pipe without taking anything apart inside the house.

Outdoors, a cleanout often sits near the house wall or along the path of the lateral toward the street, flush with the ground or rising a little above it, sometimes under a small lid. Indoors, it may be on a basement floor or a wall near the point where the main drain leaves the house. Every house is a little different, which is why the first look matters. If you want to “install sewer cleanout” access on an older house, the first step is knowing where the line leaves the building.

Homes without a cleanout: common in older housing

Plenty of older houses were built without one. In those homes, the only ways into the line are a roof vent, a floor drain or a toilet that has to be pulled off the floor. All three work, but they are less convenient, can make a mess indoors and often give the camera a shorter view of the pipe.

That matters because most sewer work starts with looking inside. A line that has a proper opening makes a sewer camera inspection simpler to set up, and it lets the pro start from a known point instead of improvising one.

A missing cleanout is not a defect you have to panic about. It is simply something worth fixing when the line is already open for other work, or before it is needed at two in the morning.

One-way vs two-way cleanout: what the difference means

Cleanouts come in two common forms. The difference is the direction of access, and it shapes what a pro can reach from one opening.

Which one suits your line depends on the layout of the pipe and where the opening can go. The pro chooses after seeing the line, and can explain the reasoning in plain words.

Adding a cleanout during a repair: how to install a sewer cleanout

To install a sewer cleanout, the pro exposes a section of the lateral, cuts into it and fits a branch fitting with a riser and a cap. The riser runs up to ground level or to the basement floor, where the cap sits ready for the next visit. It needs some digging at that one spot, not along the whole line.

That is why a repair is a natural time to add one. The pipe is already open, and the extra work is small compared with the rest of the job. Trenchless work in particular needs access points, so a cleanout is often part of the plan. Our page on trenchless sewer repair explains how access points fit into lining and pipe bursting.

A cleanout can also be added on its own, without replacing the line. Whether that works for your house depends on the depth and condition of the pipe, which a camera helps show.

Why a cleanout makes future service easier

Once a cleanout is in, every later job starts from a clear opening. Cutting roots, clearing a clog and running a camera can all happen from outside, with the cap off and the work staying out of your living space.

It helps over the long run too. A line that can be checked easily is a line that tends to get checked, which means problems get found while they are still small. It also makes a sewer scope before buying a house straightforward for whoever buys the property later, which is a point worth remembering if you ever plan to sell.

Finding your cleanout

If you want to know whether your house has one, a short walk around will usually tell you. Look for these:

• A capped pipe a few inches across, near the house wall or in the yard along the line toward the street
• A round cap or plug, often with a square or raised nut on top
• A small lid in the lawn or a flower bed hiding a capped pipe
• A capped fitting on a basement floor or wall, near where the main drain leaves the house

Look, but do not open it. If you find one, note where it is and tell the pro. If you cannot find one, say so, because that tells the pro where the job will begin.

Sewer cleanout installation in Mount Prospect homes

Sewer cleanout installation in Mount Prospect is shaped by the age of the housing. Most homes here went up after World War II, and many built before 1970 were not given a cleanout, while newer infill and townhomes with PVC laterals are more likely to have one. The ground matters as well, since heavy clay soil and mature trees mean roots are a frequent reason pros need to reach the line.

Brickman Manor on the north and east side is a tree-lined subdivision from the mid to late 1960s, where trees now stand close to many laterals and an easy way in saves a lot of effort. The page on sewer line repair in Brickman Manor goes through what the pros see there.

Colonial Heights on the west side has 1960s split-levels and ranches, often with full basements, so the cleanout may be inside near the main drain rather than in the yard. See sewer line repair in Colonial Heights for more.

Sewer cleanout questions answered