
Call us when you come across a broken pipe. Call us when you can’t clear a line. Call us when “it’s not something you do”. We specialize in all types of underground pipe repair. This includes main sewer lines, kitchen drain pipes, and floor drains under the slab. We service across the Twin Cities Metro including Minneapolis, St. Paul, Roseville, Golden Valley, Minnetonka, Edina, Bloomington & Inver Grove Heights, and more!
Bonfe offers a $99 service charge for the first 30 minutes of diagnosis. If the diagnosis exceeds 30 minutes, additional rates will apply.
A professional will:
If we do the work, we'll waive the $99 diagnostic charge.
100% satisfaction guaranteed. We stand behind all our work.
You don’t have to wait for a full backup to know something’s off. Many sewer issues give subtle clues early on—and catching them sooner can help prevent bigger disruptions later.
Our experienced Bonfe Underground team knows exactly what to look for. If you’ve noticed any of the signs below, it may be time for a professional inspection.
Sewer lines are designed to be airtight (aside from roof venting). Persistent sewer smells can indicate a crack or break in the line that’s letting gas escape.
Sewage acts like fertilizer. If part of your lawn looks unusually healthy compared to the rest, it could point to a leak below the surface.
When a sewer line cracks, moisture can soften the surrounding soil over time. This may cause the ground above the line to settle or sink slightly.
In more severe cases, sewer issues can contribute to shifting soil near your home’s foundation. It’s worth having this checked sooner rather than later.
Standing wastewater is a clear sign something’s wrong—whether it’s a blockage, break, or backup in the main sewer line. This should be addressed promptly to prevent further damage.

No matter the problem, our The Twin Cities Metro Area sewer line repair technicians will determine what needs to be fixed before any work is done, so you will know exactly what solution is best for your home’s sewer line.
When a sewer line needs repair, clear answers and skilled workmanship matter. Bonfe Underground focuses on diagnosing and repairing main sewer lines for Twin Cities homeowners, using proven methods and modern technology to deliver dependable, long-term results at a fair cost.
As a family-owned, locally operated company, we handle sewer line repairs of all sizes year-round. From the first inspection to the final repair, we explain what we’re seeing, outline your options, and do the work with care and respect for your home and yard.
With Bonfe Underground, you can expect straightforward service, quality workmanship, and a team that takes pride in doing the job right.

The timeline for sewer line repair depends on several factors, including the location of the pipe, the type of material, and how extensive the damage is. In many cases, a standard sewer line repair can be completed in one to three days.
More complex repairs—such as deeper lines, severe damage, or full replacements—may take several days to about a week. During your inspection, the Bonfe Underground team will explain what’s involved and provide a clear, realistic timeline before any work begins.
Collapsed sewer lines are most commonly caused by aging pipes and tree root intrusion. Over time, roots are drawn to the moisture inside sewer lines and can enter through small cracks or joints. As the pipe material weakens with age, continued pressure from roots and shifting soil can eventually lead to a collapse.
Other contributing factors can include older pipe materials, ground movement, or long-term deterioration. A professional sewer camera inspection is the best way to confirm the cause and determine the right repair approach.
A broken sewer line can create serious issues if left unaddressed. Leaking wastewater can affect the soil beneath your home, potentially contributing to foundation cracks, settling, or ground instability over time.
Beyond structural concerns, broken sewer lines can also create sanitation and odor issues. Addressing the problem early helps limit damage and allows for more repair options.
Sewer line problems often show up gradually. Common signs include:
You may also notice unusually green or lush patches of grass in your yard above the sewer line, which can indicate an underground leak. If multiple fixtures are affected at once, it’s often a sign that the issue is in the main sewer line rather than a single drain.