Plumbing Contractor for Water and Sewer Line Services


One of the most important parts of a building’s structure is its plumbing. The water main and sewer lines form an essential component of the plumbing system. Though crucial, but often neglected part of a household plumbing, the repairing and maintenance of water main and sewer lines is the responsibility of the house owner. Any failures or leaks to these can lead to serious damage and huge repair expenses.

Plumbing Inspection and Repair Services in Maryland, Washington Area


Critical plumbing repairs and installations like plumbing main water installation and sewer lines demands expertise and skills of a professional. In residential locations, these plumbing systems are connected to a complex and high-pressure interconnected network of major city and state pipelines. Therefore, inspecting and maintaining these isn’t like the normal household plumbing. If you live somewhere in Columbia, Bowie or Howard County and have been facing such plumbing issues, be a responsible homeowner, and seek the services of highly trained professionals, like the ones at Definitive Mechanical to get a reliable inspection to track the problem at its source and to have a long-lasting fix.

Hire Sewer and water pipeline plumbers in MD Area


Over time, the water and sewer pipes undergo degradation due to environmental factors, chemicals and water, making them vulnerable to failures. However, these failures go unnoticed until they become serious. Even the minor plumbing faults can lead to significant repair expenses. The chemical properties of the soil in areas like Prince Georges County, Montgomery County, Virginia, Maryland etc. subjects the pipes to harsh conditions, making them lose their strength. If you have been experiencing any foul smell or water-logging or seepage around your main supplies, it might be a sign of pipeline failures. Schedule an inspection and repair with Definitive Plumbing and stay worry-free.

We understand the problems and solutions related to plumbing, hence can help you stay clear of any problems and also offer consultation to help you plan your plumbing layout efficiently. Our plumbing services cater to all verticals of water mains and sewer maintenance

  • Detailed inspection by the experts
  • Repairs and Replacements by skilled professionals
  • Reliable regular cleaning and maintenance services
Plumbers for water mains and sewer line repairs and maintenance


When it comes to water mains and sewer line repairs and maintenance, people are often concerned about the destruction that comes along with it. Most plumbing companies take a simple approach of uprooting the topsoil and going in blind. While at Definitive Plumbing, our experience and systematic approach enable us to plan and process before taking any action. We employ advanced monitoring and detection system to track the source of the problem, thus minimizing the damage to your property, landscaping and hence reducing the repair cost and timing.

We at Definitive Mechanical make painstaking efforts to polish our skills and train our professionals so as to deliver superior repair services that are both reliable and economical for our clients. Our elaborate portfolio of satisfied clients in Montgomery, Washington DC, Silver Spring and other geographies across the US speaks for our capabilities and exceptional customer experience.

We operate in Columbia, Silver Spring, Gaithersburg, MD, Prince Georges, Howard, Montgomery, Bowie, Rockville, Washington, DC, Potomac, Germantown, Virginia, and Maryland. For best and quick services, call us today!


What Our Customers Say

Past Performance Rated "Outstanding" by our Clients!

  • "Keon and his team were on top of it from the beginning. I was greeted well over the phone, and felt as if Keon was invested in my problem before being hired for the job."

    Charles Reed
  • "Definitive Mechanical provided prompt and excellent same-day service. Very professional!"

    Lakisha Broadway
  • "I was extremely impressed, they were prompt, courteous, and professional if you need plumbers ask for DJ and Keon."

    Michael Frost
  • "Everything went extremely well. They were punctual, which I really liked. Cleaned up after themselves which I also liked. Very professional and courteous. This is my second time hiring this company. I would definitely hire them again. Thanks Definitive,"

  • "Service was excellent. They were prompt, professional and diagnosed and replaced my toilet the same day. and, they left the bathroom spotless. I would definitely use Definitive Mechanical again."

  • "I was thoroughly impressed with the punctuality, professionalism, and responsiveness of the representative from Definitive Mechanical. Both issues were fixed immediately and I have not had any issues since then. Would definitely recommend to a friend."

    Shekida Smith
  • "The price was fantastic, and the guys from Definitive were able to start right away. They worked extremely hard to finish the job and did not cut any corners. I was extremely impressed from the first time they came to give an estimate, and they continued to impress throughout the whole job."

    Bryan Mott
  • "If I could give DJ and his team a 100 stars-- I will. They were punctual, very patient ( they waited in their van for over 2 hours waiting for the WSSC personnel to show up). They went over and beyond what was expected. My family constantly talks about the dedication and patience of these men throughout the period WSSC needed to fix the water main problem."

    Dorothy Wigwe

Call Us : (301)679-5849

Address : 9701 Apollo Drive, Suite 100, Largo, MD 20774, USA

E-mail : [email protected]


State Of Maryland Master Plumber/Master Gasfitter- 96958 WSSC Master Plumber/Master Gasfitter- 73696 Howard Co. Master Plumber/Master Gasfitter- 20020096958 Anne Arundel Co. Master Plumber/Master Gasfitter- A2-6139 City Of Rockville Master Plumber/Master Gasfitter- PLL-0002113 MD Home Improvement Contractor/Salesman- 134723/109901


State Of Virginia Master Plumber/Master Gasfitter- 2710064209
State Of Virginia Class A Contractor- 2705181061

District of Columbia Master Plumber/Master Gasfitter- PGM1002236

State Of Delaware Master Plumber/Master Gasfitter- PL-0012866

Office Hours :
Monday - Friday 7am-6pm,
Saturday 7am-3pm

24-Hours Emergency Service

MDOT MBE CERT No. 20-134
SWaM CERT No. 815255
NAICS Code- 238220
SIC Code- 1711