Sump pump replacement in Leesburg.
Sump pump replacement in Leesburg: $697 installed in your existing pit. A new pit, a battery backup, outside drain work or new wiring is extra.
- Cast iron pump, quiet check valve
- Extras priced in writing first
- Dedicated plumbing team
Book your sump pump replacement
Cloudbursts downtown, and a Town rule that keeps groundwater out of the sewer.
In July 2026 the Town of Leesburg asked residents to help update its stormwater master plan, last updated in 1990. The reason will sound familiar to anyone with a sump pump: total rainfall has held steady, the Town says, but more of it arrives in storms that can dump several inches in a few hours. A pump that keeps pace through a wet week can fall behind in one such afternoon, and if the power drops, a pump with nothing behind it stops.
The floodplain study that opens that work starts with the Historic District and other spots with known flooding. Downtown also holds the oldest basements in Leesburg, often stone or brick walls never meant to stay dry, where a pit, if there is one, was likely dug decades after the house. There we look at the pit before we price anything: its liner, its depth, and where the water gets in.
Along Tuscarora Creek the Town reworked the channel, finished in 2021, to cut flooding of the homes beside it; its project page shows that stretch underwater in Tropical Storm Hanna in 2008. A better creek doesn’t lower the groundwater, and after a long rain the pit is where it shows up first.
Where the pumped water goes is the Town’s business. Its construction standards keep stormwater, ground water, roof runoff and subsurface drainage out of the sanitary sewer under any circumstances, and it runs a standing program to repair old sewers and cut the rain and groundwater leaking in. A pump piped to a laundry sink or floor drain sends water exactly where the Town is working to keep it out, so a replacement is the time to take it outside. Lansdowne, on Loudoun Water’s sewer, gets the same answer.
Sump pumps across Leesburg, place by place.
Census figures for the owner-occupied homes in each place, and what to check on a sump pump in houses that age.
| Place | Median home built | Most homes are | Heated with | What to check |
|---|---|---|---|---|
| Leesburg | 1996 | single-family houses, about 4 in 10 | gas, about 7 in 10 | 1980s and 90s basements: an original pump is long overdue. |
| Lansdowne | 2005 | condo and apartment buildings, about 4 in 10 | gas, about 8 in 10 | Newer basements: the pump may still be the builder’s. |
Leesburg houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
The Town of Leesburg
Inside the town limits: the Old and Historic District downtown, Exeter and Carrvale inside the bypass, Potomac Station and Edwards Landing outside it.
- Median home built1996 Census
- Built before 1980about 2 in 10 Census
- Built since 2000about 4 in 10 Census
- Most homes aresingle-family houses, about 4 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedabout 3 in 10 Census
- A basement from the 1980s or 90s is several pumps in by now, or overdue for its next one.
The Loudoun County side
Lansdowne only. It’s the one Census place outside the town limits, so the farms and lots beyond it aren’t in these figures.
- Median home built2005 Census
- Built before 1980hardly any Census
- Built since 2000about 9 in 10 Census
- Most homes arecondo and apartment buildings, about 4 in 10 Census
- Heated withgas, about 8 in 10 Census
- Rentedabout 3 in 10 Census
- In a house built since 2000, the pump in the pit may still be the original, and an original is due.
What sump pump replacement costs in Leesburg.
The same price as our sump pump replacement page: one flat number for a new pump in a pit that’s still sound, with what costs extra named right beside it.
- Sump pump replacement, installed in your existing pit$697
- Sump pump and battery backup, installed together$3,200
- A new or deeper pit, discharge line work outside, or a dedicated circuitPriced in writing before we start
$697 covers a new cast iron pump, a quiet check valve, new PVC up to your existing discharge line, a battery water alarm by the pit, the old pump hauled away and a bucket test before we leave.
A battery backup keeps pumping through a power outage, and the outage usually comes with the storm. With a new pump, the pair is $3,200 installed. The sump pump estimator helps you decide whether you need one.
When a sump pump in Leesburg needs replacing.
The pit fills faster than the pump can empty it
In a heavy storm that usually means one of three things: a pump too small for the inflow, a check valve letting each load fall back, or a float snagging on the pit wall. Note when it happens and how high the water climbs; that tells us which.
It’s past seven years old
Zoeller, who make a lot of the pumps around here, puts a sump pump’s life at seven to ten years. Past seven, replace it on your schedule instead of the storm’s.
It starts, stops, then starts again
Water is running back into the pit through a check valve that no longer closes, so the pump moves the same water again and again until it wears out.
After a storm in Leesburg, check the sump pump.
Six checks you can make yourself once the rain lets up, none of them with your hands in the pit. Then call us and we’ll check it all.
Does the pump kick on?
Watch the pit during the rain or right after. The pump should start as the water rises, empty the pit and shut off. A full pit, or a pump that hums and moves nothing, isn’t keeping up.
Is there water where it shouldn’t be?
Walk the basement: the corners, the walls, the floor by the pit, under the water heater and the furnace. Photograph any wet spot before you mop, so we can see where it came in.
Is the discharge line clear?
Outside, find where the pump’s pipe ends. It should be open, not crushed, buried or full of leaves, and aimed away from the house so the water doesn’t run back to the foundation.
Does the check valve hold?
Listen when the pump shuts off. Water rushing back into the pit means the check valve isn’t closing, and the pump has to move that water again.
Did the power go out?
The pump stops when the power does, often at the height of the storm. If the basement took water during an outage, that’s the job a battery backup does.
Water near an outlet? Stay out.
If water is standing near the pit, an outlet or anything plugged in, don’t wade in to check. Call us, and only switch the power off at the panel from somewhere dry.
Not sure what you saw? Call us after a storm and we’ll check it all: the pump, the float, the check valve, the discharge line and where the water came in. If the pump can’t keep up, a new one is $697 installed in your existing pit; a new or deeper pit, a battery backup, discharge line work outside and a dedicated circuit are extra, priced in writing before we start.
How to pick the best plumber for a sump pump in Leesburg.
Questions to ask anybody who quotes you, us included.
In a downtown basement, will they size up the pit first?
Pits in older Leesburg basements were often added later and vary a lot, from a proper liner to a gravel-lined hole. A cast iron pump has to sit level and clear of debris to last, so ask for the pit checked and any work it needs priced in writing first.
Is the price for the whole job?
Ask what the number covers: the pump, the check valve, the pipe, hauling the old one off, a test before they leave. Then ask what costs extra, and get it in writing.
What’s the new pump made of?
Cast iron, ideally. Plastic pumps cost less and are usually the ones that quit early. Ask before the old one comes out.
Do they look at where the water goes?
A discharge line that’s cracked, buried or frozen shut every January leaves the new pump pushing against a closed pipe. Whoever replaces it should check the outside end too.
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Sump pump questions from Leesburg.
Where should the sump line end in a Leesburg yard?
Well out from the foundation, so the water can’t soak back down to the pit. The Town’s stormwater advice for pipe outlets is stones at the end to slow the water and let it soak in, and that suits a sump line too.
How many Leesburg homes even have a sump pump?
The Census can’t tell you: its housing survey counts age, heat and building type, not basements. In town about four in ten homes are detached houses and three in ten townhouses, the kinds that most often have one here, and close to one in five is in a condo or apartment building, where few owners have a pit of their own.
Has Leesburg had the kind of storm the Town is planning for?
Yes. NOAA’s storm events database logs August 6, 2020 as a day of flash flooding across the town, with Town Branch over its banks at Dry Mill Road and several water rescues near and north of Leesburg. The year before, Tuscarora Creek ran out of its banks and over the W&OD Trail. A pit gets its hardest test on afternoons like those, and the checklist on this page is where to start once the water drops.
How much does sump pump replacement cost in Leesburg?
$697 installed in your existing pit: a new cast iron pump, a quiet check valve, new PVC to your discharge line, a battery water alarm, the old pump hauled away and a bucket test. A new or deeper pit, discharge line work outside, a battery backup and a dedicated circuit are extra, priced in writing before we start. A new pump and a battery backup installed together are $3,200.
Can I check my sump pump myself?
Yes. Pour five gallons of water into the pit. The float should rise, the pump should start within a few seconds, and it should shut off clean once the water’s down. If you hear water rushing back into the pit after it stops, that’s the check valve.
More from SwiftPro in Leesburg.
More from SwiftPro in Leesburg
A new pump before the next storm.
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