Plumber in Washington, DC

title: “Plumber in Washington, DC | Keston’s Plumbing” meta_title: “Plumber in Washington, DC – Licensed for DC, VA & MD | Keston’s Plumbing” meta_description: “Looking for a licensed plumber in Washington, DC? Keston’s Plumbing serves Northwest DC, Northeast DC, Capitol Hill, Georgetown, Dupont Circle, and Adams Morgan. Specialists in older rowhouse plumbing. Call (703) 655-5274.” target_keyword: “plumber in washington dc”

Professional Plumbing Services Across the District of Columbia

Keston’s Plumbing is a family-owned plumbing company with over 10 years of experience, and we are fully licensed to perform plumbing work in Washington, DC, in addition to our home base in Virginia. We hold all required District of Columbia plumbing licenses, are insured, and carry Green Plumbing Certification. Our DC service area covers Northwest DC, Northeast DC, Capitol Hill, Georgetown, Dupont Circle, Adams Morgan, and surrounding neighborhoods throughout the District.

Washington, DC, presents plumbing challenges that are unlike anything found in the surrounding suburbs. The District’s rich architectural history means that many homes, particularly rowhouses, were built long before modern plumbing codes and materials became standard. Working in these properties demands a plumber who understands older systems, respects the character of historic homes, and has the technical skill to bring aging infrastructure up to safe, functional standards.

Plumbing Challenges in DC’s Older Homes

Cast Iron Drain Lines

Many rowhouses in Capitol Hill, Georgetown, Dupont Circle, and Adams Morgan still have original cast iron drain and sewer lines. Over decades, cast iron corrodes, develops internal buildup, and eventually cracks or collapses. Warning signs include slow drains throughout the home, sewage odors, and recurring backups. Keston’s Plumbing provides cast iron pipe inspection using sewer camera technology, along with full or sectional replacement when repair is no longer viable. We work carefully in older homes to minimize disruption to finished spaces.

Lead Pipe Assessment and Replacement

Homes built before 1986 in Washington, DC, may still have lead supply lines connecting the home to the public water main, or lead solder on interior copper joints. Lead in drinking water is a serious health concern, and the District has active programs encouraging residents to address lead service lines. Our team can assess your home’s plumbing for lead components and provide replacement options using modern, safe materials. We are familiar with DC Water’s lead service line replacement program and can help you understand your options.

Galvanized Pipe Replacement

Similar to lead pipes, galvanized steel supply lines are common in pre-1960s DC homes. These pipes corrode internally over time, restricting water flow and producing discolored water. We replace galvanized lines with copper or PEX piping, restoring full water pressure and delivering clean water to every fixture in your home.

Residential Services Across DC Neighborhoods

Whether you own a Federal-style rowhouse on Capitol Hill, a Victorian in Dupont Circle, a Georgetown townhome, or a condo in Adams Morgan, our residential plumbing services include:

• Complete repiping (lead, galvanized, and cast iron replacement)
• Water heater installation and repair (tank and tankless)
• Drain cleaning and sewer line service
• Fixture installation and upgrades
• Bathroom and kitchen remodel plumbing
• Leak detection and pipe repair
• Sump pump installation
• Emergency plumbing service

Commercial Plumbing in Washington, DC

The District is also home to thousands of businesses that depend on reliable plumbing. Keston’s Plumbing provides commercial plumbing services for offices, restaurants, retail spaces, and multi-unit residential buildings throughout DC. Our commercial services include tenant improvement plumbing, restroom renovations, commercial water heater service, grease trap installation, and backflow prevention testing.

Why DC Residents Choose Keston’s Plumbing

Licensed in the District of Columbia

Not every Virginia-based plumber holds a DC license. We do. Our DC plumbing license means we are authorized, trained, and insured to perform plumbing work within the District, and we understand the specific codes and permitting requirements that apply to DC properties.

Job-Based Pricing

We charge by the job, giving you a clear, upfront quote before work begins. No hourly billing, no surprises.

30-Day Warranty

All work is backed by our 30-day warranty. We take responsibility for the quality of every repair and installation.

90 Days Same-as-Cash Financing

Older homes often need significant plumbing investment. Our 90 days same-as-cash financing makes it possible to address critical issues like lead pipe replacement or full repiping without putting everything on hold.

Green Plumbing Certified

Our Green Plumbing Certification allows us to recommend and install water-saving fixtures and energy-efficient systems, helping DC homeowners reduce their environmental impact and utility expenses.

Schedule Plumbing Service in Washington, DC

Need a licensed plumber in Washington, DC, who has real experience with the District’s unique housing stock and plumbing systems? Call Keston’s Plumbing at (703) 655-5274 to schedule your appointment. For emergency plumbing service, call (443) 416-4826 at any time. We are ready to serve you.