McLean, VA · Serving the Potomac, MD service area
Emergency Plumber for McLean Homes: Older Houses, Storm Pipes and Sewer Backups
McLean has many older detached houses, pockets that flood in heavy rain and a county sewer rule that changes who you call first. This page helps you sort out which applies.
Six in ten McLean homes were built before 1980: start with the pipes
The 2019-2023 survey counts 17,765 housing units in McLean, and 80.8 percent are detached houses. Adding the 1950s, 1960s and 1970s shares gives about 58 percent built before 1980. That is the owner's arithmetic on Census figures.
Many of these houses have had kitchens and baths redone while the pipes behind the walls stayed put. A plumber's first job is to learn what is there before suggesting anything.
| Question | Why it matters | What you can ask for |
|---|---|---|
| What are the supply pipes made of? | Material drives how long they last | The material named in writing |
| How many leaks has the house had? | Repeat leaks point past one bad joint | A count of repairs and where they were |
| Is the water pressure normal? | High pressure strains old fittings | A pressure reading at an outside spigot |
| Where are the shutoffs? | A stuck valve slows every emergency | Each valve tested and labeled |
Several repairs close together can point to replacing worn supply lines, but one leak is just one leak. Start from the symptom.
McLean storm pipe capacity and heavy-rain basement water
Fairfax County's Kent Garden stormwater project page, covering Mulroy Street, Kirkley Avenue, Poole Lane and Pimmit Run, cites pipe capacity on Poole Lane in flooding of several homes. That is one McLean project, not a map of your street.
The point for a homeowner is that water in a basement during a storm may be stormwater, groundwater or sewage, and each has a different fix. Fairfax County's lateral guidance says basement backups usually occur during heavy rain, and that connecting sump pumps, downspouts or French drains to the sanitary sewer is illegal.
- Is the water clear or does it smell of sewage?
- Does it come from a floor drain, a wall crack or a toilet?
- Do a sump pump or downspout discharge near the house?
- Did the neighbors see the same problem?
Fairfax County runs a Backflow Valve Program designed to preclude sewer backups at a property. Ask the county whether your address qualifies, and ask a plumber whether a valve is already in your line. Clear water after a storm is also a drying and cleanup job.
Sewage or storm water in a McLean basement?
Keep people and pets out of the water and call. Give us your street address.
A backup in McLean: the county first, then a plumber
For a backup you suspect is in the county main, Public Works asks you to phone the county before any plumber, around the clock at 703-323-1211.
If a single toilet, tub or sink backs up, a plumber is the better first call. Under County Code 65-6-1 the owner maintains the lateral between house and street main.
When the line is the owner's, a camera inspection tells you what failed. A plumber who finds roots or grease can use high-pressure line cleaning, and a broken pipe may point to repairing a lateral without trenching.
The county's claims route for a blockage in its own main is Risk Management at 703-324-3040. Keep the plumber's or inspector's report to support a claim.
McLean on the map: Old Dominion Drive, Chain Bridge Road and ZIP 22101
McLean is about 6 miles from Potomac. The Census Bureau puts about 53 percent of its land in ZIP 22101 and 36 percent in 22102, with small shares in five other ZIPs. We confirm coverage from the address you give.
Gas heaters in 71 percent of homes, electric in 25
Utility gas heats 70.9 percent of McLean homes in the survey, and electricity heats 25.4 percent. Those figures are for home heating, so check the tank's label for its own fuel.
Replacing a gas water heater in Fairfax County takes a permit even when the new tank matches the old one. Owners can pull their own, though the county says a licensed contractor is the strongly recommended route. Land Development Services is at 703-222-0801. Ask which inspection date applies.
Before replacing, choosing the new heater comes down to size, fuel and venting. A slow leak at the base of the tank usually means the tank is done. A gas smell means getting out and calling 844-927-4427, the Washington Gas emergency line.
Attached homes, townhouses and apartments in McLean
About one in ten units is attached, and 7.9 percent sit in buildings of 20 or more units. In those buildings the pipe inside the wall may belong to the association, and the fixture to you. The answer is in the governing documents.
Ask the management office before calling about a leak that may reach a neighbor. Tell us it is a condo or townhouse so the plumber comes prepared.
- Who owns the pipe behind the wall?
- Does the association require notice before work?
- Does the building have its own shutoff for your unit?
- Who pays if water reaches the unit below?
A faucet or toilet inside your own unit is yours to fix, such as a leaking vanity faucet.
Backup, flood and older-house questions in McLean
My McLean basement backs up when it rains hard. Who do I call?
When a floor drain and a fixture back up together, the county wants the first call at 703-323-1211 since the main may be involved. Keep whatever report the plumber writes. Ask a plumber whether a backflow valve makes sense for your house.
Is a house built in the 1960s likely to need new pipes?
Not automatically. Age is a reason to look, not a verdict. A good plumber names the pipe, counts earlier leaks and says if one run or many are failing before proposing a bigger job.
Does a McLean water heater swap need a permit?
For a gas water heater, yes. Fairfax County says the permit is required even for a like-for-like replacement. Ask the contractor to pull it, and keep the inspection record.
Which ZIP code is McLean?
McLean is split among several ZIP codes, with 22101 holding about 53 percent of its land and 22102 about 36 percent by Census count. We check the address you give.
Water on the floor in McLean?
Turn off the main and call. Give us your street address.