Loudoun County, VA — Licensed Class A Plumbing Contractor
Loudoun County VA Plumber — Emergency, Water Line & Full-Service Plumbing
The Professor Plumbers serves every city and community in Loudoun County, VA — Leesburg, Ashburn, Sterling, Purcellville, South Riding, Brambleton, Lansdowne, Cascades, Broadlands, Hamilton, and beyond. Licensed, bonded, insured, and available 24/7. Call (571) 632-6151 for a free estimate.
Your Licensed Plumber in Loudoun County, VA
Loudoun County is one of the fastest-growing and most prosperous counties in the United States — a dynamic mix of historic small towns like Leesburg and Purcellville, booming technology and data center corridors in Ashburn and Sterling, rapidly expanding master-planned communities in South Riding, Brambleton, Lansdowne, Cascades, and Broadlands, and thriving commercial districts along Route 7, Route 28, and the Dulles Toll Road. Whether you own a home in one of Loudoun's established neighborhoods, manage a commercial property near One Loudoun or the Dulles Technology Corridor, or operate a restaurant or business in Leesburg's historic downtown, The Professor Plumbers is the licensed, bonded, and insured plumbing contractor that Loudoun County residents and businesses trust.
We are a locally owned and operated plumbing company — not a national franchise, not a call center. Every plumber on our team is Virginia-licensed, background-checked, and trained to work cleanly and efficiently in occupied homes and active businesses. When you call (571) 632-6151, a real person answers and dispatches a licensed plumber to your Loudoun County location with a typical response time of 60 to 90 minutes. We provide written estimates before any work begins, pull permits when required by Loudoun County, and back every job with our satisfaction guarantee. No subcontractors. No markups. No surprises.
24/7 Emergency Plumber in Loudoun County, VA
Burst Pipes, Sewer Backups, Water Heater Failures — We Respond Fast
A burst pipe in a finished basement, a sewage backup flooding a kitchen, a failed water heater in a new-construction home in Brambleton — plumbing emergencies in Loudoun County do not wait for business hours, and neither do we. The Professor Plumbers operates a true 24/7 emergency plumbing service throughout all of Loudoun County, with licensed plumbers on call every night, every weekend, and every holiday. When you call (571) 632-6151, you reach a real person immediately — not a voicemail, not an answering service — and we dispatch a licensed plumber to your location right away.
Our emergency plumbing team responds to burst and frozen pipes, major water leaks and flooding, complete sewer line backups and overflows, water heater failures, gas line concerns, and any plumbing situation that cannot wait. We serve every community in Loudoun County — from Leesburg and Ashburn to Sterling, Purcellville, South Riding, Lansdowne, Cascades, Broadlands, Hamilton, Lovettsville, and Middleburg. Our emergency response time across Loudoun County is typically 60 to 90 minutes.
Loudoun County's rapid growth means thousands of newer homes with complex plumbing systems — PEX manifolds, tankless water heaters, high-efficiency fixtures — alongside older properties in Leesburg, Purcellville, and Hamilton with aging copper or galvanized lines that are more susceptible to sudden failures. Our licensed plumbers are trained on every system type and carry the parts and equipment needed to resolve most emergency plumbing situations in a single visit.
Real person answers 24/7 — no voicemail, no answering service
Main Water Line Replacement in Loudoun County, VA
No Subcontractors. No Markups. Licensed Water Line Specialists.
The main water line is the single pipe that carries all fresh water from the public water main — or your private well — into your home or business. When it fails, every faucet, toilet, shower, and appliance in your building loses water. Main water line failures are among the most disruptive plumbing emergencies a Loudoun County homeowner or property manager can face, and they require a licensed Class A plumbing contractor with the equipment, permits, and expertise to restore service quickly and correctly.
The Professor Plumbers performs main water line replacement throughout Loudoun County — in Leesburg, Ashburn, Sterling, Purcellville, South Riding, Brambleton, Lansdowne, Cascades, Broadlands, and every surrounding community. We use modern pipe materials including PEX, copper Type K, and HDPE depending on your property's specific conditions, and we offer trenchless pipe bursting where soil conditions allow — minimizing disruption to your yard, driveway, and landscaping. Every water line replacement is permitted through Loudoun County, inspected, and backed by our workmanship guarantee.
Warning signs that your main water line may need replacement include a sudden and unexplained spike in your water bill, low water pressure throughout the entire home, wet or soggy patches in your yard above the water line path, discolored or rusty water at your taps, or a water meter that continues to run when all fixtures are off. If you notice any of these signs in your Loudoun County home, call (571) 632-6151 immediately for a free assessment.
Warning Signs You May Need Water Line Replacement
Plumbing Services in Every Loudoun County City & Community
From Leesburg to Lovettsville — We Know Loudoun County Plumbing
Loudoun County spans more than 500 square miles and encompasses a remarkable variety of communities — each with its own housing stock, infrastructure age, and plumbing challenges. The Professor Plumbers has deep experience serving every corner of the county, and our licensed plumbers understand the specific plumbing conditions, permit requirements, and common issues found in each community.
In Leesburg, the county seat, we frequently work on older homes in the historic district with aging cast iron drain lines and galvanized water supply pipes that are decades past their service life. In Ashburn and Sterling — the heart of Loudoun's technology corridor — we serve newer construction with modern PEX systems, tankless water heaters, and high-efficiency fixtures, as well as the massive commercial and data center campuses that require specialized commercial plumbing expertise. In South Riding, Brambleton, Lansdowne, Cascades, and Broadlands, we handle the full range of residential plumbing needs for Loudoun's newest and fastest-growing master-planned communities. In Purcellville, Hamilton, Lovettsville, and Middleburg, we serve the county's more rural western communities — including properties on private well and septic systems that require additional expertise beyond standard municipal plumbing.
Also serving nearby communities in Northern Virginia:
Residential Plumbing Services in Loudoun County, VA
Complete Home Plumbing — New Construction to Historic Homes
Loudoun County's residential landscape is uniquely diverse — from older homes in Leesburg, Purcellville, and Hamilton with aging copper or galvanized plumbing systems, to the massive wave of new construction in Ashburn, Brambleton, South Riding, and Lansdowne featuring modern PEX systems and high-efficiency fixtures. Our licensed plumbers are experienced with every pipe material, every fixture type, and every plumbing challenge common to Loudoun County homes.
Our residential plumbing services in Loudoun County include drain cleaning and hydro-jetting for stubborn clogs and slow drains, water heater repair and replacement for tank, tankless, and hybrid heat pump systems, non-invasive leak detection to find hidden leaks without tearing up your walls or floors, faucet and fixture installation, toilet repair and replacement, sump pump installation and service, garbage disposal installation, and full bathroom and kitchen remodel plumbing. We also perform whole-home repiping for properties with aging, corroded, or failing pipe systems.
Every residential job in Loudoun County is backed by our satisfaction guarantee. We treat your home with the same respect and care we would want for our own — clean work, honest pricing, and a job done right the first time. No subcontractors, no surprises, no hidden fees.
View All Residential Plumbing Services
Commercial Plumbing Services in Loudoun County, VA
Licensed Commercial Plumbing for Restaurants, Tech Campuses & Property Managers
Loudoun County is home to one of the most dynamic commercial real estate markets in Northern Virginia — the Dulles Technology Corridor and Ashburn's data center alley house some of the world's largest technology companies, while Leesburg's historic downtown, One Loudoun, and the Route 7 and Route 28 corridors are packed with restaurants, retailers, hotels, and office buildings that depend on functioning plumbing to stay open and stay compliant.
Our commercial plumbing services in Loudoun County include grease trap installation, cleaning, and maintenance for restaurants and food service operations; commercial water heater systems for hotels, apartment complexes, and office buildings; backflow prevention device testing, repair, and annual certification; hydro-jetting for commercial drain lines and sewer mains; tenant improvement plumbing for new restaurant buildouts, retail spaces, and office suites; and preventive maintenance programs for multi-unit residential and commercial facilities throughout the county.
We are fully licensed and insured for commercial plumbing work in Virginia and carry the coverage levels required by most property management firms and general contractors in the Loudoun County area. We pull permits, coordinate inspections with Loudoun County, and ensure every commercial job meets or exceeds Virginia building code.
Why Loudoun County Chooses The Professor Plumbers
Class A Licensed in Virginia
Every plumber on our team holds a Virginia Class A contractor license. We pull permits, pass inspections, and meet every Loudoun County code requirement — protecting your home's value and your family's safety.
No Subcontractors — Ever
We never hand your job off to a subcontractor. The licensed plumber who gives you the estimate is the same professional who performs the work — ensuring accountability from start to finish.
True 24/7 Emergency Response
Real people answer our phones around the clock. When you call (571) 632-6151 at 2 AM with a burst pipe in your Ashburn home, a licensed plumber is dispatched immediately — not the next morning.
Transparent, Written Estimates
We provide written estimates before any work begins. The price we quote is the price you pay — no hidden fees, no surprise charges, no bait-and-switch pricing.
Bonded & Fully Insured
The Professor Plumbers carries full liability insurance and bonding that meets or exceeds Virginia requirements — protecting you, your property, and your investment on every job.
Satisfaction Guaranteed
We stand behind every job we perform in Loudoun County. If you are not completely satisfied with our work, we will make it right — that is our promise to every customer.
The Professor Plumbers — Loudoun County's Trusted Plumbing Contractor
Loudoun County, Virginia presents a unique set of plumbing challenges that require a contractor with deep local knowledge and genuine expertise. The county's explosive growth over the past two decades has created a patchwork of housing stock — brand-new PEX-plumbed homes in Brambleton and South Riding sitting alongside 1960s and 1970s homes in Leesburg and Sterling with original copper or galvanized supply lines and cast iron drain systems that are approaching or exceeding their expected service life. The Professor Plumbers has the experience and equipment to handle every plumbing system type found in Loudoun County, from the newest high-efficiency fixtures to the oldest cast iron stacks.
Our service area covers all of Loudoun County's incorporated towns and unincorporated communities — Leesburg, Ashburn, Sterling, Purcellville, South Riding, Brambleton, Lansdowne, Cascades, Broadlands, Potomac Falls, Hamilton, Lovettsville, Round Hill, Hillsboro, Middleburg, and Dulles. We are familiar with Loudoun County's permitting process, inspection requirements, and the specific plumbing conditions found in each community. When you hire The Professor Plumbers, you are hiring a contractor who knows your county, knows your neighborhood, and knows how to get your plumbing job done right the first time.
From routine drain cleaning and water heater replacement to complex main water line replacement and 24/7 emergency plumbing response, The Professor Plumbers delivers the full spectrum of residential and commercial plumbing services that Loudoun County homeowners, property managers, and business owners need. We are proud to serve the fastest-growing county in Virginia — and we are committed to earning and keeping the trust of every customer we serve in Loudoun County, one job at a time. Call (571) 632-6151 today for a free estimate.
Our Licensed Plumbing Team Serving Loudoun County, VA
Plumbing Services Across Northern Virginia
We serve Loudoun County, Fairfax County, Prince William County, and all of Northern Virginia.
Frequently Asked Questions — Loudoun County Plumbing
Ready to Schedule Your Loudoun County Plumbing Service?
Call (571) 632-6151 now or request a free estimate online. We serve all of Loudoun County — Leesburg, Ashburn, Sterling, Purcellville, South Riding, Brambleton, and beyond. Licensed, bonded, insured, and available 24/7.
Also serving all of Northern Virginia: