
As winter approaches, the cold can put significant strain on your plumbing system. A frozen pipe may seem like a minor problem at first, but
Always Available, Serving 24/7
A failing sewer line doesn’t just cause inconvenience, it can put your entire home at risk. MT Dunn Plumbing specializes in diagnosing and repairing damaged sewer lines throughout Hillsboro, using modern trenchless techniques whenever possible to minimize disruption to your yard, driveway, and daily routine. From small cracks to fully collapsed pipes, our team delivers lasting repairs backed by real experience and honest communication, so you’re never left guessing about the health of your sewer system.
Our highly experienced plumbing professionals will contact you for a free estimate and consultation.








MT Dunn Plumbing is trusted by homeowners and businesses across Hillsboro for reliable plumbing services. Customers appreciate the team’s quick response, clear communication, and quality work. Whether it’s a small repair or a complete plumbing system replacement, they focus on getting the job done right.
EXCELLENT Based on 95 reviews Posted on Google RubenTrustindex verifies that the original source of the review is Google. Late Sunday night we had an emergency leak, where we were forced to shut off water to entire house. I reach out MT Dunn plumbing and in a short notice and within 35 mins Irich was able to come over and fixed our leak. Truly appreciate the quick response especially being late Sunday night around 9-10pm!!!Posted on Google Matt CorradoTrustindex verifies that the original source of the review is Google. We inadvertently discovered our kitchen and washing machine drains were disconnected and dumping water underneath the house, in the crawlspace. We may never know why or for how long but Irich responded to my call personally and set a date within a single business day knowing we'd couldn't use the kitchen until it was fixed. He was here on time and had it repaired in a half day. Proper invoicing and estimates based on labor and parts always makes me happy. So glad to have a plumber now. I won't go anywhere else.Posted on Google Nick A.Trustindex verifies that the original source of the review is Google. I have used MT Dunn many times, mostly smaller projects. Usually available within 24-48 hours. Always professional and courteous. Wouldn’t hesitate to use them again!Posted on Google MTrustindex verifies that the original source of the review is Google. Excellent service start to finish. Arrived on time, responded quickly to request. Very friendly and professional. Everything handled with care and expertise. Shower head repair. Hillsboro Area.Posted on Google Zari MootzTrustindex verifies that the original source of the review is Google. This is the 3rd time we've used M T Dunn Plumbing, and the 3rd time we've have a 5-star experience. I would recommend them to everyone!Posted on Google Rie JacobsTrustindex verifies that the original source of the review is Google. Irich is very easy to work with and always shows up on time. He’s honest, professional, and very efficient. His work is fast but never rushed. He does things the right way and never cuts corners. Over the past three years, he has helped us three times: installing a water heater, replacing some toilet parts, and installing a new toilet. Every job was done quickly and professionally. He’s also very respectful of our home and keeps things clean while working. On top of that, he’s a genuinely kind person—even great with our dog 🐶 His pricing is fair and he never overcharges. It’s hard to find someone this trustworthy. I highly recommend him. Thank you Irich!Posted on Google Brian SecrestTrustindex verifies that the original source of the review is Google. I've had MT Dunn plumbing handle a couple of plumbing issues we've had over the last few years. Our most recent visit was due to a leaking valve going to our guest bathroom toilet. It was stripped and Irich was able to fix it in short order. Friendly, transparent, punctual, and knowledgeable. We highly recommend Dunn plumbing and Mikes son Irich.Posted on Google Cooper HowardTrustindex verifies that the original source of the review is Google. This is the second time I’ve used M T Dunn Plumbing and both experiences have been great. I recently discovered I had a leaky pipe underneath my cement driveway. M T Dunn came out and assessed the situation and gave me multiple ways get it fixed with varying costs. I decided what I wanted to do and they came out a few days later and took care of it. They cut a hole in the cement, found the leak, fixed it and patched the driveway in a single day which will end up saving me a ton of money. They’re very fair and have gotten things done quickly and easily both times I’ve needed them.Posted on Google philip salvadorTrustindex verifies that the original source of the review is Google. Very upfront on pricing, finished the work as expected.Posted on Google Daniel CruzTrustindex verifies that the original source of the review is Google. Irich is great and excellent work and did same day service..I would highly recommend mt plumbing for anyone
Sewer line repair is not a job for guesswork or shortcuts. Here’s what sets our team apart.
Deep Local Knowledge
Familiar with Hillsboro's soil conditions, older pipe materials, and common neighborhood issues.
Trenchless Repair Options
Modern techniques that fix pipes without tearing up your entire yard.
Licensed and Insured Crew
Every technician is properly trained, licensed, and insured for your protection.
Upfront, Written Estimates
Clear pricing before work begins, with no hidden fees or surprise charges.
Root Cause Repairs
We fix the actual source of the problem, not just the symptoms.
Quality Materials
Durable pipe materials selected to outlast cheaper, short-term fixes.
Respect for Your Property
Careful site work that protects landscaping, hardscaping, and structures.
Warrantied Workmanship
Repairs backed by a solid warranty for long-term peace of mind.
Flexible Scheduling
Appointments built around your availability, including urgent same-week slots.
Decades of Combined Experience
A team that has handled nearly every type of sewer failure imaginable.
Together, these strengths make MT Dunn Plumbing a name Hillsboro homeowners can rely on for sewer repairs that actually last.
We follow a structured, transparent process designed to fix the problem right the first time.
Every job starts with a conversation. We ask about symptoms, timing, and any past sewer issues so we understand the full picture before touching a single pipe.
Before recommending any repair, our technicians run a camera through the line to confirm the exact location, cause, and severity of the damage.
We walk you through the findings in plain language and explain which repair method fits your situation, whether that’s a spot repair, pipe lining, pipe bursting, or full replacement.
Our crew sets up access points carefully, protecting nearby landscaping, walkways, and structures before any excavation or trenchless work begins.
Depending on the chosen method, we either excavate the damaged section or use trenchless equipment to bypass digging almost entirely.
We install durable replacement pipe or cure-in-place lining, sealing off cracks, root intrusion points, and weak joints for good.
Once repairs are complete, we test the line to confirm proper flow, watertight seals, and correct slope throughout the repaired section.
Any disturbed soil, sod, or paving is restored as closely as possible to its original condition before we leave the property.
We review the completed repair with you, answer any remaining questions, and confirm you’re satisfied before closing out the job.
You’ll receive a written summary of the repair performed, materials used, and warranty details for future reference.
Most standard sewer line repairs in Hillsboro are completed within a single day, though larger replacements may take longer depending on scope.
Sewer damage doesn’t always announce itself loudly. Watch for:
Several factors commonly lead to sewer line failure, including:
From what we’ve seen, the answer is: it depends on the extent of the damage. At MT Dunn Plumbing, we’ve learned that the right call almost always comes down to what our camera inspection actually reveals, not what’s easiest to sell.
Not every damaged sewer line needs full replacement. A general homeowner assumes the worst the moment they hear “sewer problem,” but in reality, many issues are isolated, a single cracked joint, a short section affected by root intrusion, or a localized blockage. In cases like these, a targeted repair or pipe lining is often enough to solve the problem for years to come, and pushing for a full replacement would be an unnecessary expense.
We’ve walked into jobs where the pipe showed widespread deterioration, multiple collapsed sections, or damage running the entire length of the line. In cases like these, patch repairs are little more than a temporary fix, and new failures tend to surface nearby not long after. When a line is nearing the end of its lifespan, investing in a full replacement often makes far better financial sense than paying for repeated repairs down the road.
The cost of an honest recommendation is minor compared to the frustration and expense of repairs that don’t hold. We think of our camera inspection as the deciding factor, you’re not just diagnosing a pipe, you’re protecting your budget, your property, and your peace of mind.
Severely aged or already-patched systems deserve this extra scrutiny. Older clay or cast iron pipes, a history of prior repairs, and mature tree roots nearby are common conditions that tip the scale toward replacement being the smarter long-term choice.
If you’re serious about solving the problem for good, let the camera footage decide, not the sales pitch. We’d rather recommend a smaller repair when that’s genuinely all you need, and be upfront with you when full replacement is truly the better investment.
Understanding your repair options helps you make a confident, informed decision.
Factor
Yard Disruption
Project Timeline
Landscaping Impact
Overall Cost
Pipe Access
Best Suited For
Noise and Mess
Long-Term Durability
Trenchless Repair
Minimal digging, small access points only
Often completed in a single day
Preserves lawns, gardens, and hardscaping
Competitive once restoration costs are factored in
Works through existing entry points
Localized cracks, root intrusion, minor misalignment
Comparatively quiet and contained
Lining and bursting materials rated for decades of use
Traditional Excavation
Full trench dug along the pipe's path
Can extend several days depending on scope
Frequently damages plants, pavers, and driveways
Restoration and labor often raise total cost
Requires open trenches for full pipe access
Severe collapse or extensive multi-section damage
Heavier equipment, more visible disruption
Depends heavily on new pipe material and installation
Both methods have their place, and our team will recommend whichever approach best fits your pipe’s condition and your budget.
Fast Response • Upfront Pricing • Guaranteed Work
MT Dunn Plumbing provides expert sewer line repair services in Hillsboro, OR, using trenchless and traditional methods to fix cracked, collapsed, or root-damaged sewer lines with lasting results.
A sudden sewer backup can’t wait for a convenient appointment slot.
Priority Scheduling
Urgent sewer failures move to the front of our service queue.
Round-the-Clock Support
Our team is reachable for emergencies at any hour, every day of the week.
Fast Diagnostic Deployment
Camera equipment is dispatched quickly to locate the failure point.
On-Site Decision Making
Technicians assess options and recommend action immediately, without delay.
Temporary Containment When Needed
Steps are taken to limit further damage while repairs are arranged.
Clear Emergency Pricing
You’ll know the cost before any work begins, even during off-hours calls.
Skilled Crisis Handling
Our technicians stay calm and methodical under pressure.
Post-Repair Monitoring
We check back after emergency repairs to confirm everything is holding steady.
When a sewer emergency strikes in Hillsboro, MT Dunn Plumbing is ready to respond without delay.
Costs vary based on damage severity and repair method, but trenchless options often reduce overall expense by avoiding excavation and restoration costs.
Most localized repairs are finished within a day, while full replacements may take longer depending on pipe length and site conditions.
Yes, in many cases root intrusion can be cleared and the affected section repaired or lined without a full pipe replacement.
Trenchless methods are designed to preserve landscaping, while traditional excavation may require some restoration afterward.
A camera inspection is the most reliable way to determine whether targeted repair or full replacement is the right solution.
Coverage varies by policy, so it’s best to check directly with your insurance provider regarding sewer line damage.
Yes, MT Dunn Plumbing backs its sewer line repairs with a warranty for added confidence and peace of mind.
A damaged sewer line only gets more expensive the longer it’s ignored. Reach out to MT Dunn Plumbing for a thorough diagnosis and a repair plan built around what your pipes actually need, not guesswork or upselling.
Contact MT Dunn Plumbing today to schedule your sewer line repair.
At M T Dunn Plumbing, our team is committed to delivering dependable plumbing solutions for residential and commercial properties throughout Sherwood and the surrounding communities.

As winter approaches, the cold can put significant strain on your plumbing system. A frozen pipe may seem like a minor problem at first, but

Clogged drains are one of those household problems that can quickly turn from a minor inconvenience into a major headache. Slow-draining sinks, backed-up showers, and

Most homeowners rarely think about their plumbing system until something goes wrong, a faucet starts dripping, a drain backs up, or the water heater suddenly
At M T Dunn Plumbing, we proudly serve Hillsboro, Beaverton, Portland, Tigard, Lake Oswego, Sherwood, Tualatin, West Linn, Wilsonville, Aloha, Newberg, Gaston, Banks, North Plains, and the surrounding Portland metro areas.
Call Today For A Free Case Evaluation