Sewer Cleanout: What It Is, Where to Find Yours, and What to Do When It Is Damaged

1. i Cap. The removable plug at the top. Usually threaded PVC, ABS, or brass. The cap seals the cleanout to prevent sewer gas from escaping and debris from entering. It is designed to be removed by hand or with a wrench when service is needed.
2. ii Riser. The vertical pipe section that extends from the main line up to the surface. Risers are typically 4 inches in diameter for residential main line cleanouts — matching the main line size.
3. iii Fitting. The connection point where the riser meets the main line. This is usually a wye or tee fitting that allows equipment to feed into the main line in both directions — toward the house and toward the city main.
4. iv Connection to the main line. The cleanout fitting connects directly to the sewer lateral. When the cap is removed and equipment is inserted, it enters the main line and can travel the full length of the lateral.
5. How it is used during service: The technician removes the cap, inserts a camera, cable, or jetting hose into the riser, and feeds it into the main line. The cleanout provides a straight, unobstructed path into the pipe — no bends around fixture traps, no navigating through branch lines, and no disassembly of plumbing fixtures.
6. Where to Find Your Cleanout Cleanout location depends on when your home was built, local code at the time of construction, and the builder's choices. Here are the most common patterns in Northern Utah.
7. Outside the house, near the foundation wall. This is the most common location for homes built after approximately 1970. Look for a round PVC or ABS cap at ground level or a few inches below grade, within 2 to 5 feet of the exterior foundation wall. It is usually on the side of the house that faces the street or alley — because the sewer lateral runs from the house toward the city main in the street.
8. In the basement or crawl space. Some homes — especially older Northern Utah construction — have the cleanout inside, typically in the basement near where the main sewer line exits through the foundation wall. Look for a capped pipe extending up from the floor or from a horizontal pipe running along the basement wall.
9. Near the property line or sidewalk. In some configurations, a second cleanout is located near the property line, closer to the city sewer connection. This is less common in residential properties but exists in some older Ogden and Salt Lake City neighborhoods.

1. How to identify what you found: A cleanout cap is typically a round plastic white PVC or black ABS or brass threaded plug, 3 to 4 inches in diameter, sitting flush with or slightly above grade. It may have a square nut on top for wrench removal. Do not confuse it with a sprinkler valve box rectangular, green, a gas shut-off small, metal, or a water meter cover larger, metal or concrete.
2. Five Cleanout Problems and What Each One Means 1. Broken or Missing Cap The cap is cracked, missing, or no longer threads properly. Without a sealed cap, sewer gas escapes into the air near the house and dirt, debris, rainwater, and pests can enter the sewer line. A missing cap is also an open hole that poses a tripping or injury hazard.
3. What to do: Replace the cap. Cleanout caps are inexpensive — a threaded PVC cap costs a few dollars at a hardware store. Match the size typically 4 inches for a main line cleanout and thread type. If the threads on the riser are damaged and a new cap will not seat properly, the riser may need to be cut back and a new adapter installed.
4. 2. Corroded or Seized Cap Common on older homes with brass or cast iron cleanout caps. The cap has corroded to the riser and will not unscrew. A technician arriving for a cleaning visit cannot access the line without breaking or cutting the seized cap off.
5. What to do: A seized cap usually requires the technician to cut or break it free and replace both the cap and the top section of the riser with a new PVC adapter and cap. This adds 15 to 30 minutes to a service visit but is a one-time fix — the new PVC cap will not corrode.
6. 3. Buried Cleanout Soil, mulch, landscaping, or a concrete/paver addition has covered the cleanout over time. The cleanout exists but cannot be found or accessed without excavation.
7. What to do: Locate the cleanout using a metal detector for brass or cast iron caps or a line locator. Excavate the area above the cleanout — usually a small dig — and install a riser extension or access box that brings the cap up to grade level. Once exposed, consider installing a cleanout access box a small plastic or concrete box around the riser that keeps the cap accessible even as landscaping grows around it.
8. 4. Damaged Riser or Fitting The riser pipe is cracked, broken, or separated from the main line fitting. This can happen from ground movement, construction activity, vehicle traffic over the cleanout, or freeze-thaw cycles. A damaged riser may leak sewage near the foundation or may not accept equipment properly.

1. 5. No Cleanout at All The home was built without an exterior cleanout. This is most common in pre-1960 Northern Utah construction but can occur in homes from any era depending on the builder and the code enforcement at the time. Without a cleanout, every service visit requires accessing the main line through a toilet pull — removing and reinstalling the toilet to use the floor flange opening.
2. What to do: Install a cleanout. This is the single best investment a homeowner without a cleanout can make for future sewer service. Installation requires excavating at the point where the sewer lateral exits the foundation, cutting into the main line, installing a wye or tee fitting with a vertical riser, and bringing the cap to grade level. It is a one-time job that makes every future cleaning, inspection, and emergency visit faster and less expensive.
3. When Cleanout Repair Is Simple and When It Requires Excavation Simple repairs no digging required: i Replacing a broken, missing, or corroded cap — hand removal and replacement. ii Clearing debris or dirt from a shallow-buried cleanout that is only covered by a few inches of soil. iii Installing a riser extension on an existing cleanout that has settled below grade.
4. Repairs that require excavation: i Replacing a cracked or separated riser — dig to the fitting depth, cut out damaged section, install new pipe. ii Replacing a failed fitting wye or tee at the main line connection — dig to the main line, replace the fitting, reconnect the riser. iii Installing a new cleanout where none exists — dig to the main line, cut in a new fitting, install riser and cap.
5. Excavation depth for cleanout work is typically 1 to 3 feet — shallower than a full sewer line repair 3 to 5 feet because the cleanout fitting is usually positioned higher on the lateral than the main line's deepest point.
6. Why a Working Cleanout Saves Money Every sewer service visit begins with accessing the line. The cleanout is the fastest, cheapest access method. Without it, the technician must use an alternate method — almost always a toilet pull — which adds:
7. i Time: 20 to 45 minutes to remove and reinstall the toilet, including a new wax ring. ii Cost: The toilet pull adds scope to every visit. Over multiple service calls, the accumulated cost of alternate access exceeds the one-time cost of cleanout installation. iii Limitation: Accessing through a toilet flange provides a more indirect path into the main line compared to a cleanout. Camera and jetting equipment may not be able to reach the full length of the lateral or may have difficulty navigating the turns between the fixture and the main line.
8. A working cleanout eliminates all three problems. The technician removes the cap, inserts equipment directly into the main line, and has a straight path to the full lateral. If your home does not have a cleanout and you have had even two sewer service visits in the past five years, installing one is likely to save you money on the next visit — and every visit after that.

1. Locate. If you cannot find your cleanout, we can locate it using a line locator or metal detector during a service visit. If it is buried, we can recommend how to bring it back to accessible grade.
2. Assess. We inspect the cleanout — cap, riser, fitting, and connection to the main line — and tell you whether it is functional, needs minor repair cap replacement, cleaning, or needs excavation-level work riser replacement, fitting replacement, new installation.
3. Repair or replace. We handle cap replacements, corroded cap removal, and riser repairs. For cleanout installation on homes that do not have one, we can evaluate the best location, discuss the scope, and either perform the work or connect you with the right contractor depending on the excavation requirements.
4. Use it. Once the cleanout is functional, we use it for the service visit you called about — camera inspection up to 200 feet with live video, cable clearing 100+ feet, or hydro jetting 3,850 PSI / 8 GPM / 300 feet / 2 to 12 inch lines. A working cleanout means we can get into the line immediately and get you answers faster.
5. Pricing. Cleanout repair and service visits are quoted based on the scope — cap replacement, riser repair, excavation, or full installation. Emergency and after-hours calls carry a 15 to 35 percent premium 25 percent standard. Call for a quote.

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