About Mainline Plumbing & Sewer
Founded in 2021 in Knoxville, TN, Mainline Plumbing & Sewer has grown into one of the most trusted independent locally-owned plumber shops in the area. The crew specializes in residential service work — leaks, clogs, water heater service and replacement, gas lines, fixture upgrades, repipes, and sewer line repair — and is well known for the lengthy "we will not start work without explaining the price first" written estimate it provides on every visit. Backed by a 100% satisfaction guarantee and an active state license, Mainline Plumbing & Sewer is a popular pick for both single-job homeowners and rental property managers across Knoxville.
Mainline Plumbing & Sewer serves homeowners across Knoxville, TN and surrounding ZIP codes including 37902, 37915, 37919, 37920, 37923. Pricing is up-front and quoted in writing before any work begins, with no obligation if the estimate isn't right for your project.
Services offered
- Drain & sewer cleaning
- Backflow testing & install
- Sewer camera inspection
- 24/7 emergency response
- Garbage disposal service
Service area
Mainline Plumbing & Sewer covers Knoxville and the surrounding metro, typically responding to addresses within 25–35 miles of 37902. Same-day appointments are commonly available for non-emergency requests booked before noon, and 24/7 emergency dispatch is offered for active leaks, electrical hazards, no-heat/no-cool calls, and lockouts when applicable.
Licensing & insurance
FixNearMe verifies that Mainline Plumbing & Sewer holds an active TN contractor license (#TN-437276) and carries general liability insurance covering work at residential properties. We re-verify licensing annually and remove any pro whose status lapses or whose review pattern deteriorates.
How to request a quote
Use the free quote form on this page to send your job details directly to Mainline Plumbing & Sewer and up to two other nearby plumbers in Knoxville. You'll receive up-front written quotes — usually within an hour during business hours — so you can compare apples to apples before booking.