A main sewer line is typically a 3 to 6-inch diameter horizontal pipe that slopes downward (about 14 14 inch per foot) to use gravity to carry wastewater away from your home.
How to Find Your Sewer Line
To help keep your family and home safe, we've covered 4 warning signs that your home's main sewer line is clogged.
Replacing a sewer line is a major job that usually takes between one and five days, depending on the depth of the pipe, the length of the run, and how easily contractors can access the work area. In dense places like New York City, underground utility lines often make the job slower, sometimes requiring hand…
To clear a main sewer line clog, use an industrial-strength chemical main line opener (like Green Gobbler Main Line Opener or Instant Power Main Line Cleaner), or physically clear the blockage using a motorized drain auger (sewer snake). For severe blockages or tree roots, an auger is the most effective solution.
Unless your house is on a combined drains system, it needs separate drain connections to collect wastewater and rainwater.
Does homeowners insurance cover your sewer line if it's damaged? Damage to your sewer line may be covered by your policy if it is caused by perils such as hail or windstorms, explosions, lightning or fire, damages caused by vehicles, vandalism or falling objects.
Sewer lines generally last between 50 and 100 years, largely depending on the pipe material and environmental factors. Older homes with aging infrastructure may require repairs sooner.
Depending on the severity of the problem, your sewer line could take anywhere from a half hour to 5 hours to be cleaned. A professional will come and talk to you about your issue. Then, they'll likely first try to resolve the problem with a drain clearing "auger" (a motorized snake-like tool that breaks apart clogs).
Pouring salt down your drain at night is a popular DIY plumbing trick used for routine maintenance. The goal is to take advantage of the salt's coarse texture and natural moisture-absorbing properties.
A straightforward yet effective approach to addressing a clogged drain pipe involves simply using hot water mixed with dish soap. This method, ideal for tackling minor blockages, leverages the degreasing power of dish soap combined with the force of hot water to dislodge and dissolve clog-causing residue.
Key Differences Between the Two
Location: Residential sewer lines are inside your home; the main line runs underground to the street or septic tank. Size: Residential lines are smaller; the main line is the largest pipe in your system.
That's where a sewer camera inspection comes in. By inserting a specialized, waterproof video camera snake with bright LED lights into your sewer line, plumbers can pinpoint blockages, cracks, and other problems without digging up your yard.
When people refer to "old sewer pipes," they most frequently mean Orangeburg pipe. However, depending on the age of your home, your plumbing system may consist of other legacy materials.
Common Sewer Line Problems
Avoid making guesses or unsupported statements about what caused the damage to your property. Speculating can lead to inaccuracies in the adjuster's report, potentially affecting your claim.
The longer the sewage is present in the home, the higher the risk of disease or permanent damage. Can the sewage make me sick? When you have a backup of sewage in your home, it is important to remember that sewage contains bacteria, fecal material, viruses, and other hazardous microorganisms that can cause illness.
Plumbers typically unclog a main sewer line using three primary methods: motorized drain augers (snakes), high-pressure water jetting, or chemical treatments. These are accessed via your property’s sewer cleanout, which is usually a capped pipe located in the yard or near the foundation.
To protect your plumbing and the environment, you should never put fats, starches, harsh chemicals, or solid waste down your drains.
In plumbing, the "135-degree rule" is a code standard that dictates how much a horizontal drain pipe can bend or change direction. It limits the total cumulative angle of pipe fittings before a system requires an access point (cleanout) or must be vented, ensuring proper flow and preventing chronic clogs.
Baking soda and vinegar do not effectively unclog drains. Instead of clearing debris, mixing them chemically neutralizes both ingredients into salt water. The fizzing reaction is visually satisfying but largely escapes upwards, offering zero power to dissolve grease, hair, or stubborn sludge.
To clear a main sewer line without a snake, locate your home’s outdoor sewer cleanout pipe. Use an expanding water bladder (flush bag) attached to a garden hose, or pour chemical treatments directly into the drain. For grease clogs, a mixture of boiling water, baking soda, and vinegar also works.
You can't see inside your sewer line, but plumbers have specialized cameras that can. A sewer line camera inspection is essential with any sewer line problem because: You need to know if it's a clog, tree root intrusion, or pipe damage. Knowing what's down there dictates how to address the problem.