A broken main sewer line usually reveals itself through multiple, simultaneous plumbing failures and noticeable yard issues. The clearest indicators involve wastewater backing up to your lowest fixtures, persistent sewer odors, and anomalies in your lawn.
Here are seven signs that you may have a broken or collapsed sewer line.
Without an endorsement, your insurer may still help cover the cost of the repairs, up to your policy's limits, if the line is located on your property and the damage occurs sudden and accidentally. A standard homeowners policy may also pay to repair the actual sewer line if a covered peril caused the damage.
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.
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.
The easiest, most reliable DIY method to clear a main sewer blockage is using a sewer bladder (drain flush bag). It attaches to your garden hose, expands inside the pipe, and uses high-pressure water to blast the clog downstream.
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.
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.
Drains in hard-to-reach areas, such as underground pipes or sewer lines, require additional effort and equipment. Unblocking these drains can cost between £250 and £500 or more, depending on the complexity of the task.
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.
Standard homeowners insurance may only cover sewer line damage caused by sudden, accidental perils such as fire, explosion, or impact. Gradual wear, root intrusion, corrosion, or poor maintenance are typically excluded from standard policies.
Main sewer line clogs are typically caused by invasive tree roots, accumulated grease and debris, or flushing non-flushable items. Older pipes, sagging lines, or structural damage can also cause severe blockages.
Sewage contains germs like bacteria and viruses as well as parasites and worms that can cause stomach and intestine or liver illness. Germs and parasites may cause diarrhea, fever, cramps, nausea, vomiting, headache, weakness or loss of appetite.
Cast iron sewer lines, common in older homes, usually last around 50–75 years. Clay pipes can push 75–100 if conditions are friendly. PVC? That stuff can last 100 years or more, at least in theory.
Plumbers primarily use motorized drain snakes (augers) and high-pressure water jetters to unclog sewer lines, typically clearing blockages through a sewer cleanout or toilet. These tools break up stubborn clogs like tree roots, grease, and paper from 2- to 4-inch pipes.
As the fall rains intensify and the seasons shift, one surprising tip is getting renewed attention: pouring vinegar down your drains to help prevent 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.
Plumbers typically use professional-grade sulfuric acid or highly concentrated hydrochloric acid for severe clogs. For more routine or organic blockages, they often rely on commercial-strength alkaline (base) products containing sodium hydroxide (lye) or potassium hydroxide.
🧼 How It Works: Take a bar of soap (or cut one into smaller pieces). Drop it into the toilet tank—not the bowl. Every flush releases a small amount of soapy water, helping to break down stains and keep the bowl fresh.
Pouring boiling water down your drain risks melting or warping PVC pipes, destroying the glue holding plumbing joints together, and cracking porcelain sinks. It can also push liquid grease deeper into the pipes, where it solidifies and creates stubborn blockages.
If you want more earth-friendly home remedies for a clogged sewer line, combine one part baking soda with one part lemon juice or vinegar. Pour the mixture down the drain and let it sit for at least an hour before running hot tap water down the sewer line. Plumbing auger.
Acidic drain cleaners usually contain sulfuric acid at high concentrations. It can dissolve cellulose, proteins like hair, and fats via acid hydrolysis. While there are many methods for unclogging drains, one of the most effective solutions is using hydrochloric acid (HCl), a powerful chemical cleaner.
The strongest chemical unblockers are professional-grade sulfuric or lye-based acids (e.g., Zep Sulfuric Acid Drain Opener), reserved for extreme emergencies. For everyday household clogs, commercial-strength gels like Drano Max Gel Commercial Line are highly effective and safer for pipes.