Mainline Services

★★★★★ 4.5 / 5 (77)
Emergency Call


: Denver, CO 80237
: (303) 596-5803
: http://www.mainline-services.com/

Company Overview

Premier Plumbing Inspections and Reporting.

Our company stands for integrity, offering a people-first approach and offering reliable and lawful inspections for everyone engaged to enable impartial discussions with transparency. Recognized by the Channel 4 News Investigative Team, we also speak at real estate and home inspector training seminars. We comply with IPC Standards and Local City Codes. Mainline Services is the only Nationally Board Certified Inspection Company for urban areas, engineering companies, and evaluations for commercial and residential properties.

Mainline Services delivers a detailed report with PDF upload and a private video link after the inspection. We do not charge for toilet disconnections and reconnections with a fresh wax ring. We offer no-cost services for hard-to-reach locations (crawlspaces, rooftops). We employ top-rated tools with high-definition 17-inch displays and ongoing camera calibration for accuracy. We have individually insured and certified professionals. Having worked in plumbing companies with unreliable practices, I felt it was time for a change and a new standard in the plumbing industry. I acquired the best scientific equipment available, developing a National Training Program to transform my team from untrained ""Scopers"" to skilled Plumbing Inspectors with a solid understanding of construction and hydronics. Mainline Services was created to educate individuals in the plumbing field with realistic pricing and provide top-notch service at one affordable price. We serve Residential, Commercial, Warehouse, and Military establishments. We conduct inspections on pipeline construction in wastewater lines, septic lateral systems, vacuum lines, bridges, and fiber optic/power line casings. Our services do not include repairs plumbing, perform excavations, nor do we clean lateral lines. Our focus is solely on providing the best on-site recorded video inspections with written accuracy in problem resolution.

We establish a new benchmark in service at a fair market price with responsibility. We are here to help you in navigating the most important decision of your life. I do not include my name on any card or flyer, and the inspector who arrives could be one of our team members or another committed professional representing our stringent standards. We work as a cohesive unit focused solely on providing accurate assessments and helping all parties reach ""Win, Win Agreement"".

We stand as the exclusive Nationally Board Certified Inspection Company in the Midwest qualified for sewer, underground lateral line, and manhole assessments and rehabilitation. We are proactive and Corona Aware for your family and business.

Business Services

  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair
  • Sewer installation
  • Sewer repair

Business Location & Hours



Mon:8:00 AM - 5:00 PM
Tue:8:00 AM - 5:00 PM
Wed:8:00 AM - 5:00 PM
Thu:8:00 AM - 5:00 PM
Fri:8:00 AM - 5:00 PM
Sat:8:00 AM - 5:00 PM
Sun:10:00 AM - 5:00 PM

Recommended Customer Reviews

Chris K.
★★★★★

Dewayne and his assistant were very helpful as we had questions about some cracks in our clay pipes and had had three backups over the past few years. He was on time, spent quite awhile with us, gave us helpful hints and good advice. He also supplied us with a labeled DVD of our pipes, and names of reputable vendors who could help us. He carefully explained the whole process as well as a plan for the next steps.We had been told we needed a $6,000-$14,000 job to replace our main sewer line.We were happy to find out that is not the case but with regular roto-rooting and maintenance we should be okay. We would definitely recommend Mainline Services as a reputable company! They don't complete the repairs, so you know they aren't out to make money off of you.

Tommy E.
★★★★★

These guys are awesome! It's refreshing to see good honest people out there working hard to make a living... greatly appreciate the diligence and professionalism Mainline Services brings with their work... would def recommend them...

Vanessa C.
★★★★★

Thank you Mainline! I wanted to get an impartial third party when it came to my sewer scope. I had a backup and called Roto Rooter. BIG MISTAKE. $650 later... I got a bad snake and my scope guy told me that it was going to cost $14,600. I cried... Lol. I was so stressed out! The Roto Rooter guy was super uncomfortable and then he told me that... I didn't NEED to do it right away. Then I tearily said okay. I'll do it in 2 months. Then he reassured me that there was no TRUE timeframe to get it done. Weird, right?

I talked to my parents and they said to get a second impartial opinion. I decided to go with Mainline, because of their great reviews. Guess what? I saw huge roots that weren't even snaked! No wonder the water was pooling. He took his time explaining everything and the different falls and what to be concerned and what not to be concerned about. I DON'T HAVE TO FIX ANYTHING! I do need to get things cleaned again. I honestly don't trust Roto Rooter to do the job again. I'm going to go with the guy Mainline recommended. I'm not paying $450 to get a snake... I've read many reviews now and know that the going rate is about $100-180. It was recommended that I do this once every 1-3 years. I feel good about things again.

John L.
★★★★★

Dewayne with Mainline is great to work with. Friendly, knowledgeable and seems like a good guy. He knows his stuff and will help you source additional repair work to make sure you are getting an honest quote.

Evelyn L.
★★★★★

I contacted Mainline after I had the basement drain back up and 2 snake attempts didn't work. They were able to find the source of the blockage with their camera and then flag the area so my plumber would know where the issue was. They were great. Professional, courteous, and fast. They don't do repairs so they aren't try to sell you services you don't need. They had to take out the toilet which was part of the $99 fee. I have a 100 year old house so I was scared to hear the diagnosis. But thankfully it wasn't as bad as I thought. Am super happy with their service and now my plumbing works again!

Heather T.
★★★★★

Sewer talk is anything but sexy and is downright depressing financially. When our main line backed sewage into our house, we weren't prepared for the news of a belly in our line combined with an offset. We called Mainline for a second opinion/camera scope.

The woman who answered the phone was so nice and helpful. She recommended several contractors that could do the work on our sewer line. In addition, we set up a camera scope.

Matt P came out to do the scope and was awesome. He was really professional and took his time explaining what was happening in our sewer line as well as options for us. He gave us really good advice and his write up was very comprehensive. I was able to take his report and give it directly to Ed Holcroft who was one of their recommended vendors. He was awesome too and just finished the work on our line today.

In short, plumbing work is not fun to pay for but is of course essential! I would trust Mainline, Matt P and Ed Holcroft with any job.

Adam P.
★★★★★

We called Mainline after having another company come out and they quoted that we needed $8,000 in repairs done on our plumbing. We were told that our cast iron pipes were flaking and cracking and needed a liner put in. We were also told by the previous company that we would need to excavate our garage!!! We needed a second HONEST opinion. That's when we called Mainline.

Duane arrived 15 minutes early. He was friendly and knowledgable. He showed us our lines and explained exactly what was happening and why. We had old pipes, yes, however they were intact. We had a mineral buildup that needed to come off. We were charged a mere $99.00 and Duane recommended who to call to have our lines cleaned.

We were so delighted with the services. We won't use anyone else!

Ashley K.
★★★★★

First off, you should know that I did not actually hire Mainline for the plumbing work I thought I needed at my house. I left Dwayne a voicemail around 7:30am when I realized I was having back-up issues in a basement bathroom - he called me within an hour. After describing what was going on, Dwayne actually referred me to a different plumber with a specialty in the area I needed. He also provided valuable advice and recommendations, as this was the first time I've dealt with mainline issues.

The plumber Dwayne referred me to is insured and trusted, and was at my house by 10:am, problem fixed by 10:30am. I'm SO happy with the outcome. Will be keeping Mainline Services and Dwayne on my short list of excellent contractors to work with in the future.

Todd B.
★★★★★

Dewayne at mainline just potentially saved me $13K. A potential buyer of my home hired AAA Services to scope my sewer for their home inspection. AAA said I had a hole in the sewer and a belly that needed repaired to the tune of $13225. I about had a heart attack. My realtor insisted on a second opinion and we hired Mainline to come out with their HD camera and take another look. The hole in the pipe turned out to be a piece of schmuck, and the low point is self flushing with no evidence of any clog there ever. A 3' long low point in a 200' run is a non event and doesn't need any repair. You could tell on the video that sewage has never even touched the top of the sewer pipe before or after that spot.

What I like about mainline is
1. They explain exactly what you are looking at and why something is or isn't a problem.
and
2. They have no vested interest in the results of their inspection. They are going to make $99 whether you have a problem or not.

Michael B.
★★★★★

We experienced two sewer backups in three months, even after outside clean outs. I called up Mainline Plumber and Matt Palmer used his investigative skills to find the source of the problem at a y-intersection that the cleaned outs were not covering. He explained the issue in detail with evidence from camera video and even worked to clean the issues with the camera. He showed the before and after and tested each toilet for clear flow. Amazing, amazing job. He is the Sherlock Holmes of plumbing issues!!

I would note that Mainline Plumbing sent Diamondback Drains to conduct the clean-out. I asked the tech to run a clean-out from inside the house yet he insisted that outside clean-outs were sufficient. Yet as Matt Palmer found out, this did not solve the issue.

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