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About Mainline Services

Mainline Services has been performing high quality sewer line inspections since 2012 protecting thousands of real estate investments. Dewayne Melvin started this company to right a wrong. Being a former employee of a plumbing company, he discovered unethical behavior by many of the sewer inspectors. In order to right the wrongs in the industry he started Mainline Services. He then worked with Denver's Channel 4 Investigates exposing hundreds and thousands of dollars in plumbing fraud. Companies were making false diagnoses to charge for repairs with large commissions and kick backs. With Mainline Services, he set out to make a difference in the industry.


As an inspection-only company, we don't stand to gain anything by calling for unnecessary repairs. We don't complete repairs or take kickbacks from repair companies. We perform high quality video assessments of sewer lines with integrity, as an inspection should be done. With the highest rated technology available on the market, we provide written reports with video and photos to our clients within 24 hours.

Sewer inspections are vital in real estate purchases. Educated investors know shifting soils, roots, poor construction, and even time can all cause serious and expensive damage to these properties. These mainline damages can become costly at upwards of $30,000 to repair.

We don't nickel and dime our customers for toilet resets, locates, crawl spaces, or roof access points. Our competitively low all-inclusive price is set no matter how difficult the access point. If the line is not accessible, you don't pay a dime!


We are the only nationally board certified sewer line inspection company in all of Colorado and have now opened our doors to serve the Front Range metro areas. Mainline Services has also added locations in Texas and Virginia. With our team of highly trained sewer line inspectors, you can be sure to feel confident in your real estate investment. 

Mainline Services Dewayne Melvin Booth
Mainline Services Dewayne Melvin Crawlspace
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