Leesburg · Loudoun County
Emergency Plumber in Leesburg, VA: Sewer Backups, Historic District and Lead Lines
Leesburg is the county seat of Loudoun County, and that makes it easy to assume it works like Ashburn. It does not. The town runs its own water and sewer utility, and it splits the permit process with the county.
So the first useful question on a Leesburg job is whose pipe it is and who answers for it.
Which utility sends your bill, the Town or Loudoun Water
Inside Leesburg, the Town of Leesburg owns and maintains the public water supply and the sewer system. Its service area also reaches a small area of Loudoun County just outside the town boundary.
Loudoun County describes Loudoun Water as the provider for people who live outside incorporated towns. A Leesburg mailing address can therefore sit on either account.
| Where the house is | Who usually supplies the water | First call |
|---|---|---|
| Inside the town boundary | Town of Leesburg Utilities | The Town utility |
| Just outside the boundary, in the Town's service area | Town of Leesburg Utilities, at out-of-town rates | The Town utility |
| Elsewhere in Loudoun County | Loudoun Water | Loudoun Water |
The quickest way to settle it is to read the top of your water bill. Whoever sends it is the body that owns the meter and the main.
A sewer backup in Leesburg: call the Town before a plumber
The Town's own guidance is that residents maintain the sewer lateral from the house to the sewer main. It also says that if the blockage is in the Town's infrastructure, staff will clear it at no charge to you.
That gives a backup call a sensible order. Check the main first, and the plumber arrives knowing which side of the property line the fault sits on.
What to do when a drain backs up
- Stop running water in the house, including the washing machine and dishwasher
- Note whether more than one fixture is slow, and which is lowest in the house
- Call the Town utility on weekdays before hiring anyone, so a main blockage is cleared by the Town
- After hours, use the Town's non-emergency police line, which the Town lists for evenings, weekends and holidays
- If the Town finds the main clear, the fault is on the lateral, and that is ordinary drain cleaning or a camera run
The Town's page does not say where the lateral meets the main or where a cleanout sits, so a camera run is what actually finds the fault.
Where plumbing permits come from when the Town does the zoning
Leesburg splits the paperwork. The Town handles zoning, and it tells residents to confirm with Loudoun County Building and Development whether building or trade permits are required. The county lists a plumbing permit among its residential trade permits.
The county office is in the Loudoun County Government Center at 1 Harrison Street SE in Leesburg, and its phone number is 703-777-0220. A plumber pulls the plumbing permit there, not at Town Hall.
Basement finishing and additions use both desks
The Town lists interior and basement finish-outs among the projects that need a Town zoning permit and a county building permit. A new bathroom or wet bar in a basement sits inside that chain, so the plumbing rough-in is one step among several.
Whether a like-for-like water heater swap needs a permit is not stated on either the Town or the county pages we read. Ask the county before assuming either way, and ask your plumber to say who is pulling the permit on a water heater installation.
Homes built before 1980 and the lead service line map
The Town has asked owners of homes built during or before 1979 to look up their address on its service line inventory map. The Town states that lead was discontinued as a service line material in 1979.
Where the map shows the material as unknown, the Town asks the owner to report what the pipe actually is. That is a task you can do yourself in minutes where the line enters the house.
How to check
- Find the pipe that enters the house near the main shutoff valve
- Scratch it lightly with a key: a shiny, soft silver scratch can be lead, while copper looks orange and galvanized steel stays gray and hard
- Do not cut, sand or scrape it further, and report what you found on the Town's map
- If it looks like lead, ask the Town and a plumber about replacement before disturbing the line
The Town's page does not say which part of the line belongs to the owner, so ask the utility where the Town's side ends before any replacement is quoted.
Moderately hard water and what it does to a tank
The Town's 2024 water quality report gives hardness of about 5.8 to 8.8 grains per gallon, and says all of the 2024 water came from the Potomac River. That is moderately hard, not soft.
Hard water leaves scale on the bottom of a tank heater and on heating elements, which shortens their life and makes a heater rumble as it heats. Draining a few gallons from the tank each year and checking the anode rod slows it down.
A softener is optional rather than necessary at this range. Water heater repair covers the flush and the anode check, and tankless water heater units need a descale on the same logic.
The Old and Historic District: exterior work can need approval
The Town requires a Certificate of Appropriateness for all exterior alterations in the Old and Historic District, including in-kind replacement of material. The Town's preservation staff decide whether a given job needs one.
The page we read does not name vents, meters or mechanical equipment, so we do not claim they are covered. The practical step is to phone the Town preservation office at 703-771-2773 before any exterior plumbing change in the district, such as a relocated vent or a new outdoor connection.
Interior repairs are a different matter
The review the Town describes applies to exterior alterations. A repair inside a historic house is not the same question, but a trench in the front yard or a new pipe run up an outside wall may be, so ask first.
Reading a water bill for a leak you cannot see
The Town owns the water meter at each property. Its rates page also describes an adjustment for an underground leak on the pipe between the meter and the residence.
That is worth knowing because the pipe from the meter to the house is the part you cannot see. A bill that jumps with no change in habits can mean a break in that run, and the adjustment is something to ask the Town about once the leak is found and fixed.
A short meter check
- Turn off every tap and appliance that uses water
- Read the meter, wait twenty minutes, and read it again
- If the dial or leak indicator moved, water is leaking somewhere after the meter
- Call the Town utility's customer service for billing, and a plumber for the search
A moving meter tells you there is a leak, not where it is. Finding it without opening ground is what electronic leak detection does.
Leesburg housing ages: an address says little about the pipes
The Town's design guidelines for the Old and Historic District say the district's overlay dates from 1963 and that most of its areas developed around the turn of the twentieth century and later. Around that core sit many later subdivisions.
The practical result is that a Leesburg address tells you very little about the plumbing. A house in the historic core and one in a newer subdivision can be a few minutes apart and decades apart in age.
Ask roughly when the house was built and look at the pipe where it enters the house, as above. The ZIP codes for the town are 20175 and 20176, and this page describes the place; it does not say your address is within the area our dispatch network covers. Call with the address and the dispatcher will confirm.
Finding Leesburg from Ashburn
Leesburg is about 6.4 miles from central Ashburn, in Loudoun County. Inside the town the Town runs the water and sewer, so the map is a quick way to see whether you are in town or just outside it.
Leesburg plumbing questions
Who do I call first about a sewer backup in Leesburg?
On a weekday, call the Town utility before you hire anyone. The Town clears a blockage in its own main at no charge to you, so a quick call can save a plumber's visit.
If the Town finds its main clear, the fault is on your lateral, which runs from the house to the main and is yours to maintain. That is when a plumber and a camera run are the right next step.
Does a Leesburg plumber pull the permit from the Town or from the county?
Plumbing and other trade permits are handled by Loudoun County Building and Development, which is in the Government Center in Leesburg. The Town handles zoning.
A basement finish or an addition can need both: a Town zoning permit and a county building permit. Ask your plumber which permits a job needs and who is applying for them.
How do I find out whether my Leesburg house has a lead service line?
The Town asks owners of homes built in 1979 or earlier to look up their address on its service line inventory map. Where the map says the material is unknown, you are asked to report it.
The pipe is easy to find near the main shutoff, where the water line enters the house. A soft, shiny scratch under a key suggests lead. Do not cut or sand it, and ask the Town where its side of the line ends before any replacement is quoted.
I live in the Old and Historic District. Can I replace an outside pipe or vent?
The Town requires a Certificate of Appropriateness for all exterior alterations in the district, and that includes in-kind replacement of material.
The Town's page does not say whether a vent or a meter connection counts, so the safe step is to call its preservation office before the work. Repairs made inside the house are a different question from changes to the outside.
Is Leesburg water hard enough to need a softener?
The Town's 2024 report puts hardness at about 5.8 to 8.8 grains per gallon, which is moderately hard. Scale builds in tank heaters, but a softener is optional at that level.
A yearly drain of the tank and a check of the anode rod do most of the work. Whether a softener is worth installing depends on how much scale you see and how old the heater is.
My Leesburg water bill jumped and I cannot see a leak. Where do I start?
Turn off everything that uses water, read the meter, wait twenty minutes and read it again. If the dial moved, water is escaping after the meter.
The Town owns the meter and describes a bill adjustment for an underground leak on the pipe between the meter and the house. Call its customer service about the bill once the leak is found and repaired, and a plumber for the search itself.
Need a plumber in Leesburg?
Tell us whether the water bill comes from the Town or from Loudoun Water, and whether the trouble is inside the house or out toward the street. Those two answers decide who is called first.