Plumbing Services in the DC Metro Area
One company for the whole system — the water coming in, the drains going out, and everything in between. Custom Flow Plumbers is licensed and insured, rated 5.0 stars on Google, and based in Oxon Hill, serving homes across the entire DC metro area. Every job is explained in plain English before work starts, and every part we supply and install is backed by our 2-Year Warranty.
Call (301) 971-4884, Monday–Friday 8am–5pm.
Water Heaters & Heating
Water Heater Repair & Installation
No hot water, a leaking tank, or a unit that’s just old. We repair and replace tank and tankless water heaters and tell you honestly which one your situation calls for.
Gas Water Heater Service
Gas units need a tech who knows gas lines, venting, and pilot systems — not just plumbing. That’s standard work for us.
Water Heater Maintenance
Flushing and a yearly check keep a heater efficient and stretch its life years past the average.
Boiler Repair & Installation
No heat, strange noises, or a boiler that won’t hold pressure. We repair and install residential boilers.
Boiler Maintenance
A yearly once-over that catches the small problems before they become a no-heat call in January.
Drains & Sewers
Drain Cleaning
Slow drains, standing water, and clogs that keep coming back. We clear the line and find out why it clogged, so you’re not calling again in a month.
Sewer Camera Inspection
Before anyone digs or quotes you a sewer repair, we put a camera in the line and show you exactly what’s there.
Sewer Line Repair
When the camera shows damage, we repair the line — and because you saw the footage, you know the repair matches the problem.
Leaks & Pipes
Leak Detection & Repair
A water bill that jumped, a damp spot, or the sound of water when nothing’s running. We find hidden leaks and fix them right.
Pinhole Leak Repair
The tiny copper-pipe leaks common in Maryland homes. We repair the leak and check whether it’s a one-off or a pattern.
Water Main Installation & Repair
The line from the street to your home. Low pressure, discolored water, or a wet spot in the yard can all start here.
Pipe Repair & Repiping
Burst, corroded, or frozen pipes, and partial or whole-home repipes when the old piping has reached the end.
Hose Bibb Repair & Replacement
Leaking or frozen outdoor faucets, replaced before they can damage a wall.
Kitchen & Bath
Toilet Repair & Installation
Running toilets, weak flushes, leaks at the base, and full replacements.
Faucet & Fixture Installation
Drips, stiff handles, and new faucets and fixtures installed clean.
Garbage Disposal Installation
Jammed, humming, or dead disposals repaired and replaced.
Home Protection
Sump Pump Installation & Repair
The pump that keeps your basement dry when it storms. We install, repair, and replace sump pumps.
Water Filtration Installation
Hard water and DMV mineral content are rough on pipes, heaters, and fixtures. We install filtration sized to your home.
Plumbing Safety Inspection
A whole-home checkup: shutoffs, supply lines, water heater, and fixtures — the problems found early are the cheap ones.
Emergencies
Emergency Plumbing
We don’t run a 24/7 truck and we won’t pretend to. Urgent problem during the week? Call and you’ll have a solution within 24 hours — what to shut off right now, what can safely wait, and when we’ll be there.
Licensed & Insured · WSSC License #P 74018 · Rated 5.0 ★ on Google · 2-Year Parts & Labor Warranty on what we supply and install
Not sure which service you need? Call (301) 971-4884, Monday–Friday 8am–5pm, and describe what’s happening — we’ll point you to the right fix.